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Kang G, Woo WS, Kim KH, Son HJ, Sohn MY, Kong HJ, Kim YO, Kim DG, Kim EM, Noh ES, Park CII. Clinical Assessment of Thermotherapy Applications during Hepatectomy and Laparotomy in Sturgeon ( Acipenser ruthenus): Impact on Bioparameter Variations Based on Liver Condition. Vet Sci 2023; 10:682. [PMID: 38133233 PMCID: PMC10748359 DOI: 10.3390/vetsci10120682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/21/2023] [Accepted: 11/29/2023] [Indexed: 12/23/2023] Open
Abstract
Surgical techniques are gaining attention for treating physical diseases in aquaculture and aquarium fish. Sturgeon is a suitable species for surgical experiments due to its industrial significance. Maintaining homeostasis is crucial during surgical procedures, and the liver plays a major role in immune regulation. High temperature is suggested to improve physiological activity and wound healing. This study investigated differences in hepatectomy sturgeons' tolerance and histopathological responses of internal organs. Moreover, this study investigated the effects of high temperatures on wound healing and hematopoietic recovery in fish undergoing surgical procedures. The liver condition was found to play a pivotal role in the analysis, and cortisol levels were affected by anesthesia. The results showed that high temperature facilitated hematopoietic recovery and wound healing, but excessive induction of physiological activity caused damage. Managing high temperatures and liver conditions induced a remarkable improvement in wound healing. However, anesthesia itself can be a significant stressor for fish, and wound healing requires a greater amount of energy. Further research is needed to understand the stress factors caused by surgical procedures and anesthesia and to promote animal welfare in fishery products.
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Affiliation(s)
- Gyoungsik Kang
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Gyeongsangnam-do, Republic of Korea; (G.K.)
| | - Won-Sik Woo
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Gyeongsangnam-do, Republic of Korea; (G.K.)
| | - Kyung-Ho Kim
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Gyeongsangnam-do, Republic of Korea; (G.K.)
| | - Ha-Jeong Son
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Gyeongsangnam-do, Republic of Korea; (G.K.)
| | - Min-Young Sohn
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Gyeongsangnam-do, Republic of Korea; (G.K.)
| | - Hee Jeong Kong
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea; (H.J.K.)
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea; (H.J.K.)
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea; (H.J.K.)
| | - Eun Mi Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea; (H.J.K.)
| | - Eun Soo Noh
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea; (H.J.K.)
| | - Chan-II Park
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Gyeongsangnam-do, Republic of Korea; (G.K.)
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Seo S, Park JW, Kim DG, Seo JH. Physical Properties of Poly(ether-thiourea)-Based Elastomer Formed by Zigzag Hydrogen Bonding and Slidable Cross-Linking. ACS Macro Lett 2023; 12:1558-1563. [PMID: 37922152 DOI: 10.1021/acsmacrolett.3c00526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2023]
Abstract
In this study, the effects of zigzag hydrogen bonding and slidable cross-linking on the design of stretchable elastomers were explored. Poly(ether-thiourea) (TU), capable of generating strong zigzag hydrogen bonds without crystallization, was introduced as the main chain in the non-cross-linked region of the developed elastomer. Consequently, the toughness of the TU-based elastomer was 14 times higher than that of elastomers formed using linear poly(ethylene glycol), despite the relatively low molecular weight of TU (∼3k). When a slidable polyrotaxane cross-linker was introduced into the TU-based elastomer, its flexibility became twice as high as that of the rigid polymer cross-linker. Moreover, the mechanical properties of the elastomer were prevented from deterioration against repeated deformation under the limited strain condition of 150%.
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Affiliation(s)
- Sojung Seo
- Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Jin-Woo Park
- Department of Periodontology, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Jung-Gu, Daegu 41940, Republic of Korea
| | - Dong-Gyun Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Ji-Hun Seo
- Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
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Kang G, Woo WS, Kim KH, Son HJ, Sohn MY, Kong HJ, Kim YO, Kim DG, Kim EM, Noh ES, Park CI. Identification of Potential Hazards Associated with South Korean Prawns and Monitoring Results Targeting Fishing Bait. Pathogens 2023; 12:1228. [PMID: 37887744 PMCID: PMC10610149 DOI: 10.3390/pathogens12101228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 10/03/2023] [Accepted: 10/09/2023] [Indexed: 10/28/2023] Open
Abstract
This study detected two potential pathogens, Vibro parahaemolyticus, which causes acute hepatopancreatic necrosis disease (AHPND), and white spot syndrome virus (WSSV), in fishing bait in South Korea. However, their infectious nature was not confirmed, possibly due to the degradation caused by freezing/thawing or prolonged storage under frozen conditions. While infectivity was not confirmed in this study, there is still a significant risk of exposure to these aquatic products. Furthermore, fishing bait and feed should be handled with caution as they are directly exposed to water, increasing the risk of disease transmission. In Australia, cases of WSSV infection caused by imported shrimp intended for human consumption have occurred, highlighting the need for preventive measures. While freezing/thawing is a method for inactivating pathogens, there are still regulatory and realistic issues to be addressed.
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Affiliation(s)
- Gyoungsik Kang
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Republic of Korea; (G.K.)
| | - Won-Sik Woo
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Republic of Korea; (G.K.)
| | - Kyung-Ho Kim
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Republic of Korea; (G.K.)
| | - Ha-Jeong Son
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Republic of Korea; (G.K.)
| | - Min-Young Sohn
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Republic of Korea; (G.K.)
| | - Hee Jeong Kong
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Eun Mi Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Eun Soo Noh
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Chan-Il Park
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Republic of Korea; (G.K.)
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Kim D, Lee S, Kim G, Ko K, Ryu Y. Meat Quality Changes in Aged Pork Loin using Jeju Volcanic Scoria Earthenware. Food Sci Anim Resour 2023; 43:901-913. [PMID: 37701744 PMCID: PMC10493558 DOI: 10.5851/kosfa.2023.e46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 08/11/2023] [Accepted: 08/14/2023] [Indexed: 09/14/2023] Open
Abstract
This study aimed to investigate changes in the quality of meat aged using Jeju scoria earthenware. Water-holding properties, pH, color, tenderization, fatty acid composition, and free amino acid characteristics of aged pork loin were evaluated to determine the effects of wet and dry (normal and Jeju Scoria) aging methods and aging time (0, 10, 20, 30, and 40 days) on meat quality. The aging methods altered pH and CIE L* after 10 days of aging. However, the aging method did not alter the pH and CIE L* of the aged pork loin after 10 days of aging. The shear force was significantly lower in the Scoria aging method than in the wet aging method after 10 and 20 days of aging. Both the normal and Scoria aging methods increased aging loss compared to the wet aging method, which could be attributed to longer air exposure times of the two non-packaged aging methods than in the packaged aging method. The scoria aging method had significantly higher contents and ratios of saturated (SFA) to mono-unsaturated fatty acids but lower ratios of poly-unsaturated fatty acids to SFA than the wet aging method. The content of most free amino acids significantly increased with aging time, especially those related to the sweet, and umami categories. In summary, this study suggests that the Scoria aging method provides positive aspects of eating quality, such as improvement of meat tenderness and taste, including umami, with minimum changes in the overall meat quality.
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Affiliation(s)
- DongGyun Kim
- Division of Biotechnology, SARI, Jeju
National University, Jeju 63243, Korea
| | - SangHoon Lee
- Division of Pediatric General and Thoracic
Surgery, Cincinnati Children’s Hospital Medical Center,
Cincinnati, OH 45229, USA
| | - GwangHeun Kim
- Division of Biotechnology, SARI, Jeju
National University, Jeju 63243, Korea
| | - KyoungBo Ko
- Division of Biotechnology, SARI, Jeju
National University, Jeju 63243, Korea
| | - YounChul Ryu
- Division of Biotechnology, SARI, Jeju
National University, Jeju 63243, Korea
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Kim W, Kim YM, Song S, Kim E, Kim DG, Jung YC, Yu WR, Na W, Choi YS. Manufacture of antibacterial carbon fiber-reinforced plastics (CFRP) using imine-based epoxy vitrimer for medical application. Heliyon 2023; 9:e16945. [PMID: 37332980 PMCID: PMC10272483 DOI: 10.1016/j.heliyon.2023.e16945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 05/30/2023] [Accepted: 06/01/2023] [Indexed: 06/20/2023] Open
Abstract
An antibacterial carbon fiber-reinforced plastics (CFRP) was manufactured based on a vitrimer containing imine groups. A liquid curing agent was prepared to include an imine group in the matrix, and was synthesized without a simple mixing reaction and any purification process. The vitrimer used as the matrix for CFRP was prepared by reacting a commercial epoxy with a synthesized curing agent. The structural and thermal properties of the vitrimer were determined by Fourier transform-infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). In addition, the temperature-dependent behavior of the vitrimer was characterized by stress relaxation, reshaping, and shape memory experiments. The mechanical properties of composites fabricated using vitrimer were fully analyzed by tensile, flexural, short-beam strength, and Izod impact tests and had mechanical properties similar to reference material. Moreover, both the vitrimer and the vitrimer composites showed excellent antibacterial activity against Staphylococcus aureus and Escherichia coil due to the imine group inside the vitrimer. Therefore, vitrimer composites have potential for applications requiring antimicrobial properties, such as medical devices.
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Affiliation(s)
- Wonbin Kim
- Composites Materials Application Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
| | - Yong Min Kim
- Composites Materials Application Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
- Department of Material Science and Engineering and Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul, 151-742, Republic of Korea
| | - SeungHyeon Song
- Composites Materials Application Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
- Functional Soft Materials Laboratory, School of Chemical Engineering Jeonbuk National University, Beakje-dearo 567, Deokjin-gu, 54896, Jeonju, Republic of Korea
| | - Eunjung Kim
- Composites Materials Application Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
- Department of Material Science and Engineering and Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul, 151-742, Republic of Korea
| | - Dong-Gyun Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34114, Republic of Korea
| | - Yong Chae Jung
- Composites Materials Application Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
| | - Woong-Ryeol Yu
- Department of Material Science and Engineering and Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul, 151-742, Republic of Korea
| | - WonJin Na
- Composites Materials Application Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
| | - Yong-Seok Choi
- Composites Materials Application Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk, 55324, Republic of Korea
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Han N, Cho W, Hwang JH, Won S, Kim DG, Wie JJ. Enhancement of Thermomechanical Properties of Sulfur-rich Polymers by Post-Thermal Treatment. Polym Chem 2023. [DOI: 10.1039/d2py01390h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Recently, sulfur-rich polymers have been applied in various fields including energy storage, mercury absorption, and infrared (IR) optics. However, sulfur-rich polymers typically exhibit insufficient thermomechanical properties for practical applications. Herein,...
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Kim YO, Park IS, Kim DG, Park S, Han SH, Yoon JH. Enterovibrio paralichthyis sp. nov., isolated from the gut of an olive flounder Paralichthys olivaceus. Int J Syst Evol Microbiol 2022; 72. [PMID: 36748413 DOI: 10.1099/ijsem.0.005593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
A Gram-stain-negative, facultatively anaerobic, flagellated and coccoid, ovoid or rod-shaped bacterial strain, NIFS-20-8T, was isolated from the intestine of an olive flounder (Paralichthys olivaceus) from the East Sea, Republic of Korea. The neighbour-joining phylogenetic tree of 16S rRNA gene sequences showed that strain NIFS-20-8T fell within the clade comprising the type strains of Enterovibrio species. Strain NIFS-20-8T exhibited 16S rRNA gene sequence similarities of 97.2 and 97.1 % to the type strains of Enterovibrio nigricans and Enterovibrio norvegicus, respectively, and of 96.6-97.0 % to the type strains of the other Enterovibrio species. The average nucleotide identity and digital DNA-DNA hybridization values between the genomic sequence of strain NIFS-20-8T and those of the type strains of four Enterovibrio species were 73.8-75.0 and 19.8-21.1 %, respectively. The DNA G+C content of strain NIFS-20-8T from genomic sequence data was 50.55 mol%. Strain NIFS-20-8T contained Q-8 as the predominant ubiquinone and summed feature 3 (C16 : 1 ω7c and/or C16 : 1 ω6c), C16 : 0 and C18 : 1 ω7c as the major fatty acids. The major polar lipids detected in stain NIFS-20-8T were phosphatidylethanolamine and phosphatidylglycerol. Distinguishing phenotypic properties, together with phylogenetic and genetic distinctiveness, revealed that strain NIFS-20-8T is separated from recognized Enterovibrio species. On the basis of the data presented here, strain NIFS-20-8T is considered to represent a novel species of the genus Enterovibrio, for which the name Enterovibrio paralichthyis sp. nov. is proposed. The type strain is NIFS-20-8T (= KCTC 82873T=NBRC 115237T).
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Affiliation(s)
- Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - In-Suk Park
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Sooyeon Park
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon 16419, Republic of Korea
| | - Sung Hoon Han
- Sungkyun Biotech Co., Ltd, Suwon 16419, Gwonseon-gu, Suwon 16648, Republic of Korea
| | - Jung-Hoon Yoon
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon 16419, Republic of Korea
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Chae CG, Park JW, Ho LNT, Kim MJ, Kim EC, Lee W, Park S, Kim DG, Jung HM, Kim YS. Bis(β-ketoimino)nickel(II) Complexes for Random Copolymerization of Norbornene and Methyl 5-Norbornene-2-carboxylate with Controlled Ester Group Incorporation. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chang-Geun Chae
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Jun Woo Park
- Department of Applied Chemistry and Department of Energy Engineering Convergence, Kumoh National Institute of Technology, Gumi 39177, Republic of Korea
| | - Linh N. T. Ho
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
- Department of Applied Chemistry and Department of Energy Engineering Convergence, Kumoh National Institute of Technology, Gumi 39177, Republic of Korea
| | - Myung-Jin Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Eun Chae Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Woohwa Lee
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Sungmin Park
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Dong-Gyun Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
- Advanced Materials and Chemical Engineering, KRICT School, University of Science and Technology, Daejeon 34114, Republic of Korea
| | - Hyun Min Jung
- Department of Applied Chemistry and Department of Energy Engineering Convergence, Kumoh National Institute of Technology, Gumi 39177, Republic of Korea
| | - Yong Seok Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
- Advanced Materials and Chemical Engineering, KRICT School, University of Science and Technology, Daejeon 34114, Republic of Korea
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Cho JY, Kim J, Kim JW, Lee D, Kim DG, Kim YS, Lee JH, Nam BH, Kim YO, Kong HJ. Characterization of TRIM16, a member of the fish-specific finTRIM family, in olive flounder Paralichthys olivaceus. Fish Shellfish Immunol 2022; 127:666-671. [PMID: 35803510 DOI: 10.1016/j.fsi.2022.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/01/2022] [Accepted: 07/02/2022] [Indexed: 06/15/2023]
Abstract
Tripartite motif-containing (TRIM) proteins are conserved throughout the metazoan kingdom, and the TRIM subset finTRIM is highly diversified in fish. We isolated TRIM16 cDNA, a member of the finTRIM family, from the olive flounder Paralichthys olivaceus (PoTRIM16). PoTRIM16 contained a 1,725-bp coding sequence encoding a 574-amino acid polypeptide, which in turn contained a really interesting new gene (RING) finger domain, B-box-type zinc finger (B-BOX), nuclease SbcCD subunit C (SbcC), structural maintenance of chromosome (SMC prok B), and stonustoxin (SNTX) subunit alpha (SPRY-PRY-SNTX). Multiple alignment of related sequences revealed that PoTRIM16 showed 86.63-97.40% identity with fish orthologues, and a phylogenetic tree was constructed of vertebrates. PoTRIM16 mRNA was detected in all tissues examined; levels were highest in the eye and ovary. PoTRIM16 mRNA expression was investigated during early development. Under VHSV infection, PoTRIM16 mRNA was downregulated in the liver of P. olivaceus. This is the first study to characterize fish-specific finTRIM in P. olivaceus, which may play a role in the immune response against virus infection.
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Affiliation(s)
- Ja Young Cho
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Julan Kim
- Fish Genetics and Breeding Research Center, National Institute of Fisheries Science, Geoje, 53334, Republic of Korea
| | - Ju-Won Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Dain Lee
- Fish Genetics and Breeding Research Center, National Institute of Fisheries Science, Geoje, 53334, Republic of Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Young-Sam Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Jeong Ho Lee
- Fish Genetics and Breeding Research Center, National Institute of Fisheries Science, Geoje, 53334, Republic of Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Hee Jeong Kong
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea.
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Shin J, Jo W, Hwang JH, Han J, Lee W, Park S, Kim YS, Kim HT, Kim DG. Regional Control of Multistimuli-Responsive Structural Color-Switching Surfaces by a Micropatterned DNA-Hydrogel Assembly. Nano Lett 2022; 22:5069-5076. [PMID: 35648998 DOI: 10.1021/acs.nanolett.2c00197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Structural colors have advantages compared with chemical pigments or dyes, such as iridescence, tunability, and unfading. Many studies have focused on developing the ability to switch ON/OFF the structural color; however, they often suffer from a simple and single stimulus, remaining structural colors, and target selectivity. Herein, we present regionally controlled multistimuli-responsive structural color switching surfaces. The key part is the utilization of a micropatterned DNA-hydrogel assembly on a single substrate. Each hydrogel network contains a unique type of stimuli-responsive DNA motifs as an additional cross-linker to exhibit swelling/deswelling via stimuli-responsive DNA interactions. The approach enables overcoming the existing limitations and selectively programming the DNA-hydrogel to a decrypted state (ON) and an encrypted state (OFF) in response to multiple stimuli. Furthermore, the transitions are reversible, providing cyclability. We envision the potential of our method for diverse applications, such as sensors or anticounterfeiting, requiring multistimuli-responsive structural color switching surfaces.
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Affiliation(s)
- Jeehae Shin
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Wonhee Jo
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Jae Hyuk Hwang
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jiseok Han
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
- Department of Polymer Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Woohwa Lee
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Sungmin Park
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Yong Seok Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
- Advanced Materials and Chemical Engineering, KRICT School, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Hee-Tak Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Dong-Gyun Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
- Advanced Materials and Chemical Engineering, KRICT School, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
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11
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Chae JY, Kim J, Kang TW, Kim DG, Lee HH, Kim MS. The complete mitochondrial genome of Pseudopleuronectes herzensteini. Mitochondrial DNA B Resour 2022; 7:1305-1307. [PMID: 35866140 PMCID: PMC9295817 DOI: 10.1080/23802359.2022.2095234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Pseudopleuronectes herzensteini belonging to Pleuronectiformes (family Pleuronectidae) is important in the fishery industry. However, the molecular biology of this valuable fish has hardly been reported. Thus, here we report the complete mitochondrial genome of P. herzensteini. The mitochondrial DNA (mtDNA) of P. herzensteini is 16,719 bp long and contains 13 mitochondrial protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, two ribosomal RNA (rRNA) genes, and a putative control region between tRNA-P and tRNA-F distinguished by a single short noncoding region. Phylogenetic analysis using PCGs confirmed that this mtDNA sequence belongs to the family Pleuronectidae. This is the first study reporting the complete mitochondrial genome sequence of P. herzensteini.
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Affiliation(s)
- Jun Young Chae
- Department of Bioinformatics, MOAGEN, Daejeon, South Korea
- Department of Biotechnology, Pukyong National University, Busan, South Korea
| | - JinHo Kim
- Department of Bioinformatics, MOAGEN, Daejeon, South Korea
| | - Tae-Wook Kang
- Department of Bioinformatics, MOAGEN, Daejeon, South Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, South Korea
| | - Hyung-Ho Lee
- Department of Biotechnology, Pukyong National University, Busan, South Korea
| | - Moo-Sang Kim
- Department of Bioinformatics, MOAGEN, Daejeon, South Korea
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12
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Byun SJ, Kim DG, Park KD, Choi YJ, Kumar P, Ali I, Kim DG, Yoo JM, Huh HK, Jung YJ, Kim SK, Pu YG, Lee KY. A Low-Power Analog Processor-in-Memory-Based Convolutional Neural Network for Biosensor Applications. Sensors (Basel) 2022; 22:4555. [PMID: 35746337 PMCID: PMC9229394 DOI: 10.3390/s22124555] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/06/2022] [Accepted: 06/14/2022] [Indexed: 01/02/2023]
Abstract
This paper presents an on-chip implementation of an analog processor-in-memory (PIM)-based convolutional neural network (CNN) in a biosensor. The operator was designed with low power to implement CNN as an on-chip device on the biosensor, which consists of plates of 32 × 32 material. In this paper, 10T SRAM-based analog PIM, which performs multiple and average (MAV) operations with multiplication and accumulation (MAC), is used as a filter to implement CNN at low power. PIM proceeds with MAV operations, with feature extraction as a filter, using an analog method. To prepare the input feature, an input matrix is formed by scanning a 32 × 32 biosensor based on a digital controller operating at 32 MHz frequency. Memory reuse techniques were applied to the analog SRAM filter, which is the core of low power implementation, and in order to accurately grasp the MAC operational efficiency and classification, we modeled and trained numerous input features based on biosignal data, confirming the classification. When the learned weight data was input, 19 mW of power was consumed during analog-based MAC operation. The implementation showed an energy efficiency of 5.38 TOPS/W and was differentiated through the implementation of 8 bits of high resolution in the 180 nm CMOS process.
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Affiliation(s)
- Sung-June Byun
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea; (S.-J.B.); (Y.-J.C.); (P.K.); (I.A.); (D.-G.K.); (J.-M.Y.); (Y.-G.P.)
- SKAIChips, Suwon 16419, Korea; (D.-G.K.); (H.-K.H.); (Y.-J.J.); (S.-K.K.)
| | - Dong-Gyun Kim
- SKAIChips, Suwon 16419, Korea; (D.-G.K.); (H.-K.H.); (Y.-J.J.); (S.-K.K.)
- Department of Artificial Intelligence, Sungkyunkwan University, Suwon 16419, Korea;
| | - Kyung-Do Park
- Department of Artificial Intelligence, Sungkyunkwan University, Suwon 16419, Korea;
| | - Yeun-Jin Choi
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea; (S.-J.B.); (Y.-J.C.); (P.K.); (I.A.); (D.-G.K.); (J.-M.Y.); (Y.-G.P.)
| | - Pervesh Kumar
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea; (S.-J.B.); (Y.-J.C.); (P.K.); (I.A.); (D.-G.K.); (J.-M.Y.); (Y.-G.P.)
| | - Imran Ali
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea; (S.-J.B.); (Y.-J.C.); (P.K.); (I.A.); (D.-G.K.); (J.-M.Y.); (Y.-G.P.)
| | - Dong-Gyu Kim
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea; (S.-J.B.); (Y.-J.C.); (P.K.); (I.A.); (D.-G.K.); (J.-M.Y.); (Y.-G.P.)
| | - June-Mo Yoo
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea; (S.-J.B.); (Y.-J.C.); (P.K.); (I.A.); (D.-G.K.); (J.-M.Y.); (Y.-G.P.)
- SKAIChips, Suwon 16419, Korea; (D.-G.K.); (H.-K.H.); (Y.-J.J.); (S.-K.K.)
| | - Hyung-Ki Huh
- SKAIChips, Suwon 16419, Korea; (D.-G.K.); (H.-K.H.); (Y.-J.J.); (S.-K.K.)
| | - Yeon-Jae Jung
- SKAIChips, Suwon 16419, Korea; (D.-G.K.); (H.-K.H.); (Y.-J.J.); (S.-K.K.)
| | - Seok-Kee Kim
- SKAIChips, Suwon 16419, Korea; (D.-G.K.); (H.-K.H.); (Y.-J.J.); (S.-K.K.)
| | - Young-Gun Pu
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea; (S.-J.B.); (Y.-J.C.); (P.K.); (I.A.); (D.-G.K.); (J.-M.Y.); (Y.-G.P.)
- SKAIChips, Suwon 16419, Korea; (D.-G.K.); (H.-K.H.); (Y.-J.J.); (S.-K.K.)
| | - Kang-Yoon Lee
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea; (S.-J.B.); (Y.-J.C.); (P.K.); (I.A.); (D.-G.K.); (J.-M.Y.); (Y.-G.P.)
- SKAIChips, Suwon 16419, Korea; (D.-G.K.); (H.-K.H.); (Y.-J.J.); (S.-K.K.)
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Jo Y, Hwang JH, Lee SS, Lee SY, Kim YS, Kim DG, Choi Y, Jeong S. Printable Self-Activated Liquid Metal Stretchable Conductors from Polyvinylpyrrolidone-Functionalized Eutectic Gallium Indium Composites. ACS Appl Mater Interfaces 2022; 14:10747-10757. [PMID: 35099918 DOI: 10.1021/acsami.1c20185] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Stretchable electronic circuits are critical in a variety of next-generation electronics applications, including soft robots, wearable technologies, and biomedical applications. To date, printable composite conductors comprising various types of conductive fillers have been suggested to achieve high electrical conductance and excellent stretchability. Among them, liquid metal particles have been considered as a viable candidate filler that can meet the necessary prerequisites. However, a mechanical activation process is needed to generate interconnected liquid channels inside elastomeric polymers. In this study, we have developed a chemical strategy of surface-functionalizing liquid metal particles to eliminate the necessity of additional mechanical activation processes. We found that the characteristic conformations of the polyvinylpyrrolidone surrounding eutectic gallium indium particles are highly dependent on the molecular weight of polyvinylpyrrolidone. By virtue of the specific chemical roles of polyvinylpyrrolidone, the as-printed composite layers are highly conductive and stretchable, exhibiting an electrical conductivity approaching 8372 S/cm at 100% strain and an invariant resistance change of 0.92 even at 75% strain after a 60,000 cycle test. The results demonstrate that the self-activated liquid metal-based composite conductors are applicable to traditional stretchable electronics, healable stretchable electronics, and shape-morphable applications.
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Affiliation(s)
- Yejin Jo
- Department of Advanced Materials Engineering for Information and Electronics, and Integrated Education Institute for Frontier Science & Technology (BK21 Four), Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Korea
| | - Jae Hyuk Hwang
- Division of Advanced Materials, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeongro, Yuseong-gu, Daejeon 34114, Korea
| | - Sun Sook Lee
- Division of Advanced Materials, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeongro, Yuseong-gu, Daejeon 34114, Korea
| | - Su Yeon Lee
- Division of Advanced Materials, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeongro, Yuseong-gu, Daejeon 34114, Korea
| | - Yong Seok Kim
- Division of Advanced Materials, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeongro, Yuseong-gu, Daejeon 34114, Korea
| | - Dong-Gyun Kim
- Division of Advanced Materials, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeongro, Yuseong-gu, Daejeon 34114, Korea
| | - Youngmin Choi
- Division of Advanced Materials, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeongro, Yuseong-gu, Daejeon 34114, Korea
| | - Sunho Jeong
- Department of Advanced Materials Engineering for Information and Electronics, and Integrated Education Institute for Frontier Science & Technology (BK21 Four), Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Korea
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14
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Lee JM, Jin CZ, Kang MK, Park SH, Park DJ, Kim DG, Kim CJ. Nocardioides humilatus sp. nov., isolated from farmland soil in the Republic of Korea. Int J Syst Evol Microbiol 2022; 72. [DOI: 10.1099/ijsem.0.004928] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain positive, aerobic, irregularly rod-shaped, non-spore-forming bacterium, designated as BN130099T, was isolated from farmland soil sampled in Goesan-gun, Chungbuk, Republic of Korea. Phylogenetic analysis of its 16S rRNA gene sequence showed that the strain is closely related to
Nocardioides pelophilus
KACC 19192T with 98.11 % similarity. The DNA G+C content of strain BN130099T was 68.84 mol% (draft genome sequence). The genome sequence of BN130099T displayed key enzymes involved in bioremediation of organic pollutants and biosynthetic clusters of saquayamycin. The strain contained ll-2,6-diaminopimelic acid in the cell-wall peptidoglycan and MK-8(H4) as the major respiratory quinone. The predominant fatty acid was iso-C16 : 0. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine and phosphatidylinositol. The results of physiological and biochemical characterization allowed the phenotypic differentiation of strain BN130099T from
N. pelophilus
KACC 19192T. The strain represents a novel species of the genus
Nocardioides
, for which we propose the name Nocardioides humilatus sp. nov. The type strain is BN130099T (=KCTC 49079T=CCTCC AB 2018135T).
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Affiliation(s)
- Jong Min Lee
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- Department of Biotechnology, Pukyong National University, Busan 608-737, Republic of Korea
| | - Chun-Zhi Jin
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Min-Kyoung Kang
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - So Hee Park
- Department of Bio-Molecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, Republic of Korea
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Dong-Jin Park
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Chang-Jin Kim
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- Department of Bio-Molecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, Republic of Korea
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15
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Kim YO, Noh JK, Kim DG, Park IS, Park S, Yoon JH. Paenihalocynthiibacter styelae gen. nov., sp. nov., isolated from stalked sea squirt Styela clava. Int J Syst Evol Microbiol 2021; 71. [PMID: 34752209 DOI: 10.1099/ijsem.0.005085] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-negative, strictly aerobic, non-motile and rod-shaped bacterial strain, MYP1-1T, was isolated from the intestine of a stalked sea squirt (Styela clava) of the South Sea in the Republic of Korea. The neighbour-joining phylogenetic tree based on 16S rRNA gene sequences revealed that strain MYP1-1T clustered with the type strains of Halocynthiibacter species and Pseudohalocynthiibacter aestuariivivens. Strain MYP1-1T exhibited 16S rRNA gene sequence similarity values of 97.0-97.6 % to the type strains of Halocynthiibacter namhaensis, Halocynthiibacter arcticus and P. aestuariivivens. The phylogenetic tree based on genomic sequences showed that strain MYP1-1T formed a distinct branch separating it from the type strains of two Halocynthiibacter species and P. aestuariivivens and other taxa. The DNA G+C content of strain MYP1-1T from its genomic sequence was 55.0 mol%. Strain MYP1-1T contained Q-10 as the predominant ubiquinone and C18 : 1 ω7c as the major fatty acid. The major polar lipids of strain MYP1-1T were phosphatidylcholine, phosphatidylglycerol, one unidentified lipid and one unidentified aminolipid. The differences in fatty acid and polar lipid profiles and other differential phenotypic properties made it reasonable to distinguish strain MYP1-1T from the genera Halocynthiibacter and Pseudohalocynthiibacter. On the basis of the polyphasic taxonomic investigations, we conclude that strain MYP1-1T constitutes a new genus and species within the class Alphaproteobacteria, for which the name Paenihalocynthiibacter styelae gen. nov., sp. nov. is proposed. The type strain is MYP1-1T (=KCTC 82143T=NBRC 114355T).
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Affiliation(s)
- Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Jae Koo Noh
- Jeju Fisheries Research Institute, National Institute of Fisheries Science (NIFS), Jeju 63610, Republic of Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - In-Suk Park
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Sooyeon Park
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon 16419, Republic of Korea
| | - Jung-Hoon Yoon
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon 16419, Republic of Korea
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16
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Kim DG, Baek I, Lee Y, Kim H, Kim JY, Bang G, Kim S, Yoon HJ, Han BW, Suh SW, Kim HS. Structural basis for SdgB- and SdgA-mediated glycosylation of staphylococcal adhesive proteins. Acta Crystallogr D Struct Biol 2021; 77:1460-1474. [PMID: 34726173 PMCID: PMC8561734 DOI: 10.1107/s2059798321010068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 09/28/2021] [Indexed: 02/07/2023] Open
Abstract
The initiation of infection of host tissues by Staphylococcus aureus requires a family of staphylococcal adhesive proteins containing serine-aspartate repeat (SDR) domains, such as ClfA. The O-linked glycosylation of the long-chain SDR domain mediated by SdgB and SdgA is a key virulence factor that protects the adhesive SDR proteins against host proteolytic attack in order to promote successful tissue colonization, and has also been implicated in staphylococcal agglutination, which leads to sepsis and an immunodominant epitope for a strong antibody response. Despite the biological significance of these two glycosyltransferases involved in pathogenicity and avoidance of the host innate immune response, their structures and the molecular basis of their activity have not been investigated. This study reports the crystal structures of SdgB and SdgA from S. aureus as well as multiple structures of SdgB in complex with its substrates (for example UDP, N-acetylglucosamine or SDR peptides), products (glycosylated SDR peptides) or phosphate ions. Together with biophysical and biochemical analyses, this structural work uncovered the novel mechanism by which SdgB and SdgA carry out the glycosyl-transfer process to the long SDR region in SDR proteins. SdgB undergoes dynamic changes in its structure such as a transition from an open to a closed conformation upon ligand binding and takes diverse forms, both as a homodimer and as a heterodimer with SdgA. Overall, these findings not only elucidate the putative role of the three domains of SdgB in recognizing donor and acceptor substrates, but also provide new mechanistic insights into glycosylation of the SDR domain, which can serve as a starting point for the development of antibacterial drugs against staphylococcal infections.
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Affiliation(s)
- Dong-Gyun Kim
- Research Institute, National Cancer Center, Goyang, Gyeonggi 10408, Republic of Korea
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Inwha Baek
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Republic of Korea
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA
| | - Yeon Lee
- Research Institute, National Cancer Center, Goyang, Gyeonggi 10408, Republic of Korea
| | - Hyerry Kim
- Research Institute, National Cancer Center, Goyang, Gyeonggi 10408, Republic of Korea
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Republic of Korea
- R&D Center, Voronoi Inc., Incheon 21984, Republic of Korea
| | - Jin Young Kim
- Korea Basic Science Institute, Ochang, Chungbuk 28119, Republic of Korea
| | - Geul Bang
- Korea Basic Science Institute, Ochang, Chungbuk 28119, Republic of Korea
| | - Sunghwan Kim
- R&D Center, Voronoi Inc., Incheon 21984, Republic of Korea
| | - Hye Jin Yoon
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Byung Woo Han
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Se Won Suh
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyoun Sook Kim
- Research Institute, National Cancer Center, Goyang, Gyeonggi 10408, Republic of Korea
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Byun J, Kim DG, Li S. The Geopolitical Consequences of COVID-19: Assessing Hawkish Mass Opinion in China. Polit Sci Q 2021; 136:641-665. [PMID: 34908593 PMCID: PMC8661655 DOI: 10.1002/polq.13241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
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18
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Seo JK, Kim DG, Lee JE, Park KS, Lee IA, Lee KY, Kim YO, Nam BH. Antimicrobial Activity and Action Mechanisms of Arg-Rich Short Analog Peptides Designed from the C-Terminal Loop Region of American Oyster Defensin (AOD). Mar Drugs 2021; 19:451. [PMID: 34436290 PMCID: PMC8400246 DOI: 10.3390/md19080451] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 12/14/2022] Open
Abstract
American oyster defensin (AOD) was previously purified from acidified gill extract of the American oyster, Crassostrea virginica. AOD is composed of 38 amino acids with three disulfide bonds and exhibits strong antimicrobial activity against Gram-positive bacteria as well as significant activity against Gram-negative bacteria. Here, to develop promising peptides into antibiotic candidates, we designed five arginine-rich analogs (A0, A1, A2, A3, and A4), predicted their loop and extended strand/random structures-including nine amino acids and a disulfide bond derived from the C-terminus of AOD-and described their antimicrobial and cytotoxic effects, as well as their modes of action. In our experimental results, the A3 and A4 analogs exhibited potent antimicrobial activity against all test organisms-including four Gram-positive bacteria, six Gram-negative bacteria, and Candida albicans-without cell toxicity. A sequence of experiments, including a membrane permeabilization assay, DNA binding study, and DNA polymerization inhibition test, indicated that the two analogs (A3 and A4) possibly did not act directly on the bacterial membrane but instead interacted with intracellular components such as DNA or DNA amplification reactions. AOD analogs also showed strong bacterial inhibition activity in the plasma environment. In addition, analog-treated microbial cells clearly exhibited membrane disruption, damage, and leakage of cytoplasmic contents. Collectively, our results suggest that two analogs, A3 and A4, have potent antimicrobial activity via DNA interaction and have the potential for development into novel antimicrobial agents.
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Affiliation(s)
- Jung-Kil Seo
- Department of Food Science and Biotechnology, Kunsan National University, Kunsan 54150, Korea; (J.-E.L.); (K.-S.P.)
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea; (D.-G.K.); (Y.-O.K.)
| | - Ji-Eun Lee
- Department of Food Science and Biotechnology, Kunsan National University, Kunsan 54150, Korea; (J.-E.L.); (K.-S.P.)
| | - Kwon-Sam Park
- Department of Food Science and Biotechnology, Kunsan National University, Kunsan 54150, Korea; (J.-E.L.); (K.-S.P.)
| | - In-Ah Lee
- Department of Chemistry, Kunsan National University, Kunsan 54150, Korea;
| | - Ki-Young Lee
- Department of Marine Biotechnology, Kunsan National University, Kunsan 54150, Korea;
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea; (D.-G.K.); (Y.-O.K.)
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea; (D.-G.K.); (Y.-O.K.)
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19
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Kim EC, Kim MJ, Thi Ho LN, Lee W, Ka JW, Kim DG, Shin TJ, Huh KM, Park S, Kim YS. Synthesis of Vinyl-Addition Polynorbornene Copolymers Bearing Pendant n-Alkyl Chains and Systematic Investigation of Their Properties. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00858] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eun Chae Kim
- Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Myung-Jin Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Linh Nguyet Thi Ho
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
- Department of Applied Chemistry, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi 39177, Republic of Korea
| | - Woohwa Lee
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Jae-Won Ka
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Dong-Gyun Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
- Advanced Materials and Chemical Engineering, KRICT School, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Tae Joo Shin
- UNIST Central Research Facilities, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Kang Moo Huh
- Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Sungmin Park
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Yong Seok Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
- Advanced Materials and Chemical Engineering, KRICT School, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
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20
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Kim DG, Cho S, Lee KY, Cheon SH, Yoon HJ, Lee JY, Kim D, Shin KS, Koh CH, Koo JS, Choi Y, Lee HH, Oh YK, Jeong YS, Chung SJ, Baek M, Jung KY, Lim HJ, Kim HS, Park SJ, Lee JY, Lee SJ, Lee BJ. Crystal structures of human NSDHL and development of its novel inhibitor with the potential to suppress EGFR activity. Cell Mol Life Sci 2021; 78:207-225. [PMID: 32140747 PMCID: PMC11068002 DOI: 10.1007/s00018-020-03490-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 01/29/2020] [Accepted: 02/17/2020] [Indexed: 02/03/2023]
Abstract
NAD(P)-dependent steroid dehydrogenase-like (NSDHL), an essential enzyme in human cholesterol synthesis and a regulator of epidermal growth factor receptor (EGFR) trafficking pathways, has attracted interest as a therapeutic target due to its crucial relevance to cholesterol-related diseases and carcinomas. However, the development of pharmacological agents for targeting NSDHL has been hindered by the absence of the atomic details of NSDHL. In this study, we reported two X-ray crystal structures of human NSDHL, which revealed a detailed description of the coenzyme-binding site and the unique conformational change upon the binding of a coenzyme. A structure-based virtual screening and biochemical evaluation were performed and identified a novel inhibitor for NSDHL harboring suppressive activity towards EGFR. In EGFR-driven human cancer cells, treatment with the potent NSDHL inhibitor enhanced the antitumor effect of an EGFR kinase inhibitor. Overall, these findings could serve as good platforms for the development of therapeutic agents against NSDHL-related diseases.
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Affiliation(s)
- Dong-Gyun Kim
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sujin Cho
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Kyu-Yeon Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seung-Ho Cheon
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hye-Jin Yoon
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Joo-Youn Lee
- Chemical Data-Driven Research Center, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea
| | - Dongyoon Kim
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Kwang-Soo Shin
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Choong-Hyun Koh
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ji Sung Koo
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Yuri Choi
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hyung Ho Lee
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Yu-Kyoung Oh
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Yoo-Seong Jeong
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Suk-Jae Chung
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Moonkyu Baek
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea
| | - Kwan-Young Jung
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea
- Department of Medicinal Chemistry and Pharmacology, University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Hyo Jin Lim
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi-do, 10408, Republic of Korea
| | - Hyoun Sook Kim
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi-do, 10408, Republic of Korea
| | - Sung Jean Park
- Gachon Institute of Pharmaceutical Sciences, College of Pharmacy, Gachon University, Incheon, 13120, Republic of Korea
| | - Jeong-Yeon Lee
- Department of Medicine, College of Medicine, Hanyang University, Seoul, 04763, Republic of Korea
| | - Sang Jae Lee
- PAL-XFEL, Pohang Accelerator Laboratory, POSTECH, Pohang, Gyeongbuk, 37673, Republic of Korea.
| | - Bong-Jin Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea.
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Lee KY, Kim DG, Lee KY, Pathak C, Koo JS, Ahn HC, Lee BJ. Structural and functional study of SaAcP, an acylphosphatase from Staphylococcus aureus. Biochem Biophys Res Commun 2020; 532:173-178. [PMID: 32838967 DOI: 10.1016/j.bbrc.2020.07.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 07/16/2020] [Indexed: 11/18/2022]
Abstract
Acylphosphatase is the smallest enzyme that is widely distributed in many diverse organisms ranging from archaebacteria to higher-eukaryotes including the humans. The enzyme hydrolyzes the carboxyl-phosphate bonds of the acyl phosphates which are important intermediates in glycolysis, membrane pumps, tricarboxylic acid cycle, and urea biosynthesis. Despite its biological importance in critical cellular functions, very limited structural investigations have been conducted on bacterial acylphosphatases. Here, we first unveiled the crystal structure of SaAcP, an acylphosphatase from gram-positive S. aureus at the atomic level. Structural insights on the active site together with mutation study provided greater understanding of the catalytic mechanism of SaAcP as a bacterial acylphosphatase and as a putative apyrase. Furthermore, through NMR titration experiment of SaAcP in its solution state, the dynamics and the alterations of residues affected by the phosphate ion were validated. Our findings elucidate the structure-function relationship of acylphosphatases in gram-positive bacteria and will provide a valuable basis for researchers in the field related to bacterial acylphosphatases.
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Affiliation(s)
- Kyu-Yeon Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Dong-Gyun Kim
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ki-Young Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Chinar Pathak
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ji Sung Koo
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hee-Chul Ahn
- Department of Pharmacy, Dongguk University-Seoul, Dongguk-ro 32, Ilsandong-gu, Goyang, Geonggi-do, 10326, Republic of Korea
| | - Bong-Jin Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea.
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Kim JW, Cho JY, Kim DG, Nam BH, Nho ES, Kim BS, Kim YO, Kong HJ. Establishment of Conditions for Long-Term Maintenance of Primary Embryonic Cell Cultures from Olive Flounder Paralichthys olivaceus. Dev Reprod 2020; 24:207-214. [PMID: 33110952 PMCID: PMC7576961 DOI: 10.12717/dr.2020.24.3.207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 09/08/2020] [Accepted: 09/20/2020] [Indexed: 11/24/2022]
Abstract
Primary cell culture is a sufficient method frequently used to study the cellular
properties and mechanisms of isolated cells in a controlled environment. In this
study, an embryonic cell line (FGBC8) derived from the blastula stages of
embryos of olive flounder Paralichthys olivaceus was developed.
Furthermore, conditions for optimal long-term maintenance of this primary
embryonic cell culture were investigated. Morphologically, FGBC8 cells were
composed primarily of epithelial-like cells. FGBC8 cells were subcultured for
>160 passages over ~830 days. The doubling time of FGBC8 cells was
73.8 h, and the modal diploid chromosome number was 48. FGBC8 cells transfected
with green fluorescence protein (GFP)-expression plasmid exhibited a strong
signal 48 h after transfection. Consequently, we demonstrated that fish serum is
a crucial supplement for the long-term survival and maintenance of comparable
morphology in these primary embryonic cells. Our results can be used as a guide
for primary embryonic cell cultures for other fish species and may be useful for
cell biotechnological applications.
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Affiliation(s)
- Ju-Won Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
| | - Ja Young Cho
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
| | - Eun-Soo Nho
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
| | - Bong-Seok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
| | - Hee Jeong Kong
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
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Eun HJ, Lee KY, Kim DG, Im D, Lee BJ. Crystal structure of the YoeB Sa1-YefM Sa1 complex from Staphylococcus aureus. Biochem Biophys Res Commun 2020; 527:264-269. [PMID: 32446378 DOI: 10.1016/j.bbrc.2020.04.089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 04/16/2020] [Indexed: 12/31/2022]
Abstract
Toxin-antitoxin (TA) systems are ubiquitously found in bacteria and are related to cell maintenance and survival under environmental stresses such as heat shock, nutrient starvation, and antibiotic treatment. Here, we report for the first time the crystal structure of the Staphylococcus aureus TA complex YoeBSa1-YefMSa1 at a resolution of 1.7 Å. This structure reveals a heterotetramer with a 2:2 stoichiometry between YoeBSa1 and YefMSa1. The N-terminal regions of the YefMSa1 antitoxin form a homodimer characteristic of a hydrophobic core, and the C-terminal extended region of each YefMSa1 protomer makes contact with each YoeBSa1 monomer. The binding stoichiometry of YoeBSa1 and YefMSa1 is different from that of YoeB and YefM of E. coli (YoeBEc and YefMEc), which is the only structural homologue among YoeB-YefM families; however, the structures of individual YoeBSa1 and YefMSa1 subunits in the complex are highly similar to the corresponding structures in E. coli. In addition, docking simulation with a minimal RNA substrate provides structural insight into the guanosine specificity of YoeBSa1 for cleavage in the active site, which is distinct from the specificity of YoeBEc for adenosine rather than guanosine. Given the previous finding that YoeBSa1 exhibits fatal toxicity without inducing persister cells, the structure of the YoeBSa1-YefMSa1 complex will contribute to the design of a new category of anti-staphylococcal agents that disrupt the YoeBSa1-YefMSa1 complex and increase YoeBSa1 toxicity.
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Affiliation(s)
- Hyun-Jong Eun
- College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ki-Young Lee
- College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Dong-Gyun Kim
- College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Daseul Im
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, 15588, Republic of Korea
| | - Bong-Jin Lee
- College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea.
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Kim JW, Cho JY, Kim J, Kim DG, Nam BH, Kim YO, An CM, Kim BS, Park JY, Kong HJ. First report of cathepsin E in a teleost (Korean rose bitterling, Rhodeus uyekii): Molecular characterisation and tissue distribution. Dev Comp Immunol 2020; 106:103607. [PMID: 31904433 DOI: 10.1016/j.dci.2020.103607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 12/31/2019] [Accepted: 01/01/2020] [Indexed: 06/10/2023]
Abstract
We isolated and characterised a cDNA encoding the aspartic protease cathepsin E (CTSE) in Korean rose bitterling, Rhodeus uyekii. The full-length Rhodeus uyekii CTSE (RuCTSE) cDNA (1396 bp) contains an open reading frame of 1218 bp, encoding 405 amino acids. Alignment of multiple CTSE protein sequences revealed that two of the aspartyl protease active site residues and a disulphide bond were well-conserved among the other CTSE sequences. Phylogenetic analysis revealed that RuCTSE is most closely related to freshwater fish cathepsin E. RuCTSE is widely expressed in the liver, spleen, ovary, testis, brain, eye, intestine, muscle, fin, stomach, and kidney. This first report of teleost CTSE will provide important information related to the identification of other cathepsin E genes in various fish species and will serve as a useful molecular tool to help clarify biological activities in other teleosts.
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Affiliation(s)
- Ju-Won Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Ja Young Cho
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Julan Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Cheul Min An
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Bong-Seok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Jung Youn Park
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Hee Jeong Kong
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea.
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Lee KY, Cheon SH, Kim DG, Lee SJ, Lee BJ. A structural study of TatD from Staphylococcus aureus elucidates a putative DNA-binding mode of a Mg 2+-dependent nuclease. IUCrJ 2020; 7:509-521. [PMID: 32431834 PMCID: PMC7201278 DOI: 10.1107/s2052252520003917] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 03/18/2020] [Indexed: 06/11/2023]
Abstract
TatD has been thoroughly investigated as a DNA-repair enzyme and an apoptotic nuclease, and still-unknown TatD-related DNases are considered to play crucial cellular roles. However, studies of TatD from Gram-positive bacteria have been hindered by an absence of atomic detail and the resulting inability to determine function from structure. In this study, an X-ray crystal structure of SAV0491, which is the TatD enzyme from the Gram-positive bacterium Staphylococcus aureus (SaTatD), is reported at a high resolution of 1.85 Å with a detailed atomic description. Although SaTatD has the common TIM-barrel fold shared by most TatD-related homologs, and PDB entry 2gzx shares 100% sequence identity with SAV0491, the crystal structure of SaTatD revealed a unique binding mode of two phosphates interacting with two Ni2+ ions. Through a functional study, it was verified that SaTatD has Mg2+-dependent nuclease activity as a DNase and an RNase. In addition, structural comparison with TatD homologs and the identification of key residues contributing to the binding mode of Ni2+ ions and phosphates allowed mutational studies to be performed that revealed the catalytic mechanism of SaTatD. Among the key residues composing the active site, the acidic residues Glu92 and Glu202 had a critical impact on catalysis by SaTatD. Furthermore, based on the binding mode of the two phosphates and structural insights, a putative DNA-binding mode of SaTatD was proposed using in silico docking. Overall, these findings may serve as a good basis for understanding the relationship between the structure and function of TatD proteins from Gram-positive bacteria and may provide critical insights into the DNA-binding mode of SaTatD.
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Affiliation(s)
- Kyu-Yeon Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Seung-Ho Cheon
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong-Gyun Kim
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sang Jae Lee
- PAL-XFEL, Pohang Accelerator Laboratory, POSTECH, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Bong-Jin Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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Oh R, Lee MJ, Kim YO, Nam BH, Kong HJ, Kim JW, Park JY, Seo JK, Kim DG. Myticusin-beta, antimicrobial peptide from the marine bivalve, Mytilus coruscus. Fish Shellfish Immunol 2020; 99:342-352. [PMID: 32061872 DOI: 10.1016/j.fsi.2020.02.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 02/07/2020] [Accepted: 02/12/2020] [Indexed: 06/10/2023]
Abstract
We isolated and purified an antimicrobial peptide (AMP) from the mantle of the hard-shelled mussel, Mytilus coruscus. The peptide was purified through C18 reversed-phase high-performance liquid chromatography, and displayed antibacterial activity. Total molecular mass of 11,182 Da was determined using matrix-assisted laser desorption ionization time-of-flight mass spectrophotometry. The N-terminal 23-amino acid sequence of its purified peak was obtained through Edman degradation, revealing 82% identity with myticusin-1 of M. coruscus. Complete sequence of the target peptide was determined through cDNA cloning and rapid amplification of cDNA ends. The complete sequence comprised 574 bp with a 387-bp open reading frame (ORF) encoding 24 amino acids of a signal peptide and 104 amino acids of a mature peptide, which was named myticusin-beta. Furthermore, we discovered two novel isoforms of myticusin-beta. We constructed and expressed recombinant myticusin-beta, which displayed antimicrobial activity against gram-positive (Bacillus cereus, Bacillus subtilis, Clostridium perfringens, Staphylococcus aureus, Streptococcus iniae, Streptococcus mutans) and gram-negative bacteria (Escherichia coli, Pseudomonas aeruginosa, Vibrio alginolyticus, Klebsiella pneumoniae). Purified recombinant myticusin-beta also showed anti-parasitic activity at various concentrations. A short AMP analog was designed and synthesized based on the sequence of myticusin-beta, with markedly improved antimicrobial activity. Expression of myticusin-beta was detected in the mantle at the highest level, followed by hemocytes. The results obtained in this work suggest that myticusin-beta is an immune-related AMP of M. coruscus and an effective alternative to antibiotics.
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Affiliation(s)
- Ryunkyoung Oh
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Min Jeong Lee
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Hee Jeong Kong
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Ju-Won Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Jung-Yeon Park
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Jung-Kil Seo
- Department of Food Science and Biotechnology, Kunsan National University, Kunsan, 54150, South Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea.
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Yang K, Kang YY, Ahn HJ, Kim DG, Park NK, Choi SQ, Won JC, Kim YH. Porous boron nitride/polyimide composite films with high thermal diffusivity and low dielectric properties via high internal phase Pickering emulsion method. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2019.10.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zhang H, Chavez MB, Kolli TN, Tan MH, Fong H, Chu EY, Li Y, Ren X, Watanabe K, Kim DG, Foster BL. Dentoalveolar Defects in the Hyp Mouse Model of X-linked Hypophosphatemia. J Dent Res 2020; 99:419-428. [PMID: 31977267 DOI: 10.1177/0022034520901719] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Mutations in PHEX cause X-linked hypophosphatemia (XLH), a form of hypophosphatemic rickets. Hyp (Phex mutant) mice recapitulate the XLH phenotype. Dental disorders are prevalent in individuals with XLH; however, underlying dentoalveolar defects remain incompletely understood. We analyzed Hyp mouse dentoalveolar defects at 42 and 90 d postnatal to comparatively define effects of XLH on dental formation and function. Phex mRNA was expressed by odontoblasts (dentin), osteocytes (bone), and cementocytes (cellular cementum) in wild-type (WT) mice. Enamel density was unaffected, though enamel volume was significantly reduced in Hyp mice. Dentin defects in Hyp molars were indicated histologically by wide predentin, thin dentin, and extensive interglobular dentin, confirming micro-computed tomography (micro-CT) findings of reduced dentin volume and density. Acellular cementum was thin and showed periodontal ligament detachment. Mechanical testing indicated dramatically altered periodontal mechanical properties in Hyp versus WT mice. Hyp mandibles demonstrated expanded alveolar bone with accumulation of osteoid, and micro-CT confirmed decreased bone volume fraction and alveolar bone density. Cellular cementum area was significantly increased in Hyp versus WT molars owing to accumulation of hypomineralized cementoid. Histology, scanning electron microscopy, and nanoindentation revealed hypomineralized "halos" surrounding Hyp cementocyte and osteocyte lacunae. Three-dimensional micro-CT analyses confirmed larger cementocyte/osteocyte lacunae and significantly reduced perilacunar mineral density. While long bone and alveolar bone osteocytes in Hyp mice overexpressed fibroblast growth factor 23 (Fgf23), its expression in molars was much lower, with cementocyte Fgf23 expression particularly low. Expression and distribution of other selected markers were disturbed in Hyp versus WT long bone, alveolar bone, and cementum, including osteocyte/cementocyte marker dentin matrix protein 1 (Dmp1). This study reports for the first time a quantitative analysis of the Hyp mouse dentoalveolar phenotype, including all mineralized tissues. Novel insights into cellular cementum provide evidence for a role for cementocytes in perilacunar mineralization and cementum biology.
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Affiliation(s)
- H Zhang
- Department of Restorative Dentistry, School of Dentistry, University of Washington, Seattle, WA, USA
| | - M B Chavez
- Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - T N Kolli
- Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - M H Tan
- Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - H Fong
- Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA
| | - E Y Chu
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Y Li
- Department of Oral Maxillofacial Surgery, West China School of Stomatology, Sichuan University, Chengdu, China
| | - X Ren
- Department of Periodontics, School of Stomatology, Shanxi Medical University, Taiyuan, China
| | - K Watanabe
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - D G Kim
- Division of Orthodontics, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - B L Foster
- Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, OH, USA
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Han ES, Na GH, Choi HJ, You YK, Kim DG. Effectiveness of Perioperative Immunologic Markers Monitoring for Predicting Early Acute Cellular Rejection After Living Donor Liver Transplantation. Transplant Proc 2019; 51:2648-2654. [PMID: 31477418 DOI: 10.1016/j.transproceed.2019.03.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 02/20/2019] [Accepted: 03/04/2019] [Indexed: 11/25/2022]
Abstract
BACKGROUND The objective of this study was to determine whether perioperative immunologic markers monitoring could predict early acute cellular rejection (ACR) after living donor liver transplantation (LDLT). MATERIALS AND METHODS From September 2010 to June 2013, a total of 172 patients underwent LDLT at our transplant center. Of them, 26 patients were excluded because of infection. We retrospectively reviewed the remaining 146 patients. CD4 lymphocyte activity, T cell subsets test, and serum cytokine panel were checked on the day before transplantation and at 20 days after transplantation. These patients were divided into 3 groups: 1. normal liver function test (LFT) group; 2. increased LFT without rejection group; and 3. early ACR group. We excluded the increased LFT without rejection group in order to rule out multiple factors influencing immunologic factors. RESULTS CD4 lymphocyte activity (P = .004) was significantly increased while CD4+/CD25+/FOXP3+ cells (P < .001) and interleukin (IL)-17 (P = .002) levels were significantly decreased during the perioperative period. Pretransplant IL-6 (P = .014) and IL-17 (P = .029) levels in the early ACR group were significantly lower than those in the normal LFT group. The proportion of patients with increased IL-6 during perioperative period in the early ACR group was higher than that in the normal LFT group, although the difference was not statistically significant (P = .065). CONCLUSION Our results suggest that IL-6 and IL-17 levels are associated with early ACR in LDLT patients. However, whether monitoring perioperative immunologic markers could predict early ACR remains unclear. Further prospective studies are needed to reach a definite conclusion.
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Affiliation(s)
- E S Han
- Department of Surgery, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Buchoen, Korea
| | - G H Na
- Department of Surgery, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Buchoen, Korea.
| | - H J Choi
- Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Y K You
- Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - D G Kim
- Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Kim DG, Gomberg MA, Gushchin AE, Zaycev AV. [Non-gonococcal urethritis in men]. Urologiia 2019:122-128. [PMID: 31535818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This literature review is dedicated to urethritis which is one of the most common disorders of urogenital tract in men. The current views in its etiology as well as problems in diagnosis with the main being the frequent inability to isolate etiological factor of inflammation it the urethra are described. The analysis of literature suggests a possible role of bacteria, which are associated with bacterial vaginosis in women, in the development of the urethritis in men. However, the frequency of such urethritis and causative role of specific pathogens has not been studied yet. Meanwhile, the exact determination of the causes of inflammation has direct influence on the choice of appropriate etiologic treatment and can increase its efficiency.
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Affiliation(s)
- D G Kim
- GBUZ Moscow Scientific Practical Center of Dermatology, Venerology and Cosmetology of the Moscow Healthcare Department, Moscow, Russia
- FBUN Central Scientific and Research Institute of Epidemiology of Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, Moscow, Russia
- A.I. Evdokimov Moscow State University of Medicine and Dentistry of Minzdrav of Russia, Moscow, Russia
| | - M A Gomberg
- GBUZ Moscow Scientific Practical Center of Dermatology, Venerology and Cosmetology of the Moscow Healthcare Department, Moscow, Russia
- FBUN Central Scientific and Research Institute of Epidemiology of Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, Moscow, Russia
- A.I. Evdokimov Moscow State University of Medicine and Dentistry of Minzdrav of Russia, Moscow, Russia
| | - A E Gushchin
- GBUZ Moscow Scientific Practical Center of Dermatology, Venerology and Cosmetology of the Moscow Healthcare Department, Moscow, Russia
- FBUN Central Scientific and Research Institute of Epidemiology of Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, Moscow, Russia
- A.I. Evdokimov Moscow State University of Medicine and Dentistry of Minzdrav of Russia, Moscow, Russia
| | - A V Zaycev
- GBUZ Moscow Scientific Practical Center of Dermatology, Venerology and Cosmetology of the Moscow Healthcare Department, Moscow, Russia
- FBUN Central Scientific and Research Institute of Epidemiology of Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, Moscow, Russia
- A.I. Evdokimov Moscow State University of Medicine and Dentistry of Minzdrav of Russia, Moscow, Russia
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Lee JM, Noh GY, Kim BG, Yoo Y, Choi WJ, Kim DG, Yoon HG, Kim YS. Synthesis of Poly(phenylene polysulfide) Networks from Elemental Sulfur and p-Diiodobenzene for Stretchable, Healable, and Reprocessable Infrared Optical Applications. ACS Macro Lett 2019; 8:912-916. [PMID: 35619488 DOI: 10.1021/acsmacrolett.9b00306] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The synthesis and characterization of poly(phenylene polysulfide) networks (PSNs) with controlled average sulfur ranks, from elemental sulfur (ES) and p-diiodobenzene (DIB), are investigated. The PSN films, prepared via simple hot pressing, are found to possess large extensibility up to around 300% and complete recovery of shape and mechanical properties after deformation, which are attributed to the loosely cross-linked network structures mainly consisting of linear poly(phenylene polysulfide) chains. The covalent polysulfide linkages in the PSNs also exhibit dynamic behaviors under ultraviolet (UV) or thermal treatment, thus, enabling self-healing and reprocessing of the films when scratched and broken, respectively. Combined with the unique mechanical properties of the PSNs, their high refractive index and excellent infrared (IR) transparency contribute to the preparation of stretchable, healable, and reprocessable IR transmitting materials for potential deformable and stretchable optical applications.
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Affiliation(s)
- Ji Mok Lee
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Guk Yun Noh
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Byoung Gak Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Youngjae Yoo
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Woo Jin Choi
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Dong-Gyun Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Ho Gyu Yoon
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Yong Seok Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
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Kim YO, Park IS, Park S, Kim H, Nam BH, Kim DG, Won SM, Yoon JH. Aliishimia ponticola gen. nov., sp. nov., isolated from seawater. Int J Syst Evol Microbiol 2019; 69:3109-3115. [PMID: 31334695 DOI: 10.1099/ijsem.0.003596] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-negative, aerobic, non-motile and coccoid, ovoid or rod-shaped bacterial strain, designated MYP11T, was isolated from seawater around Jeju island, Republic of Korea and identified by polyphasic taxonomic study. A neighbour-joining phylogenetic tree of 16S rRNA gene sequences showed that strain MYP11T joined the cluster comprising the type strains of Shimiaabyssi, Shimiaaestuarii and Shimiaaquaeponti, showing 16S rRNA gene sequence similarities of 96.3-96.8 %. Strain MYP11T exhibited 16S rRNA gene sequence similarity values of 94.2-94.9 % to the type strains of other Shimia species. In the upgma dendrogram based on the average nucleotide identity values of genomic sequences, strain MYP11T formed an evolutionary lineage independent of those of Shimia species and other taxa. Strain MYP11T contained Q-10 as the predominant ubiquinone and C18 : 1 ω7c and cyclo C19 : 0 ω8c as the major fatty acids. The major polar lipids of strain MYP11T were phosphatidylcholine, phosphatidylglycerol, two unidentified lipids and one unidentified aminolipid. The DNA G+C content of strain MYP11T was 63.1 or 61.5 mol%. The differences in the fatty acid and polar lipid profiles and DNA G+C contents made it reasonable to distinguish strain MYP11T from the type strains of S. abyssi, S. aestuarii and S. aquaeponti and those of other Shimia species. On the basis of the polyphasic data presented here, strain MYP11T is considered to constitute a new genus and species within the class Alphaproteobacteria, for which the name Aliishimia ponticola gen. nov., sp. nov. is proposed. The type strain is MYP11T (=KCTC 62899T=NBRC 113544T).
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Affiliation(s)
- Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - In-Suk Park
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Sooyeon Park
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon 16419, Republic of Korea
| | - Hakju Kim
- Seojin Biotech Co., Ltd., Yongin 17028, Republic of Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Sung-Min Won
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Jung-Hoon Yoon
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon 16419, Republic of Korea
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33
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Kim YO, Park S, Park IS, Nam BH, Kim DG, Yoon JH. Empedobacter tilapiae sp. nov., isolated from an intestine of Nile tilapia ( Oreochromis niloticus). Int J Syst Evol Microbiol 2019; 69:2781-2786. [PMID: 31246165 DOI: 10.1099/ijsem.0.003558] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
A Gram-stain-negative, aerobic, non-motile and ovoid or rod-shaped bacterial strain, MRS2T, was isolated from an intestine of Nile tilapia (Oreochromisniloticus) collected from the Republic of Korea. Strain MRS2T grew optimally at 30 °C and in the presence of 0-2.0 % (w/v) NaCl. A neighbour-joining phylogenetic tree of 16S rRNA gene sequences showed that strain MRS2T clustered with the type strains of Empedobacter species. It exhibited the highest 16S rRNA gene sequence similarity (98.5 %) to the type strain of Empedobacter falsenii and sequence similarities of 97.4-97.6 % to the type strains of two other Empedobacter species. Strain MRS2T contained MK-6 as the predominant ubiquinone and summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c), iso-C17 : 0 3-OH and iso-C15 : 0 as the major fatty acids. The major polar lipids of strain MRS2T were phosphatidylethanolamine, one unidentified lipid and one unidentified aminolipid. The DNA G+C contents of strain MRS2T were 32.2 mol% or 30.65 mol%. Strain MRS2T exhibited DNA-DNA relatedness values of 12-20 % to the type strains of Empedobacter falsenii, Empedobacter brevis and Empedobacter stercoris. The average nucleotide identity values between strain MRS2T and five strains of E. falsenii and E. brevis were 84.8-91.0 %. The phylogenetic, genetic and differential phenotypic properties indicated that strain MRS2T is separated from Empedobacter species. On the basis of the data presented here, strain MRS2T is considered to represent a novel species of the genus Empedobacter, for which the name Empedobactertilapiae sp. nov. is proposed. The type strain is MRS2T (=KCTC 62904T=NBRC 113550T).
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Affiliation(s)
- Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Sooyeon Park
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon 16419, Republic of Korea
| | - In-Suk Park
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Jung-Hoon Yoon
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon 16419, Republic of Korea
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34
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Jo YH, Choi WM, Kim DG, Zargaran A, Sohn SS, Kim HS, Lee BJ, Kim NJ, Lee S. FCC to BCC transformation-induced plasticity based on thermodynamic phase stability in novel V 10Cr 10Fe 45Co xNi 35-x medium-entropy alloys. Sci Rep 2019; 9:2948. [PMID: 30814569 PMCID: PMC6393512 DOI: 10.1038/s41598-019-39570-y] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 01/21/2019] [Indexed: 11/09/2022] Open
Abstract
We introduce a novel transformation-induced plasticity mechanism, i.e., a martensitic transformation from fcc phase to bcc phase, in medium-entropy alloys (MEAs). A VCrFeCoNi MEA system is designed by thermodynamic calculations in consideration of phase stability between bcc and fcc phases. The resultantly formed bcc martensite favorably contributes to the transformation-induced plasticity, thereby leading to a significant enhancement in both strength and ductility as well as strain hardening. We reveal the microstructural evolutions according to the Co-Ni balance and their contributions to a mechanical response. The Co-Ni balance plays a leading role in phase stability and consequently tunes the cryogenic-temperature strength-ductility balance. The main difference from recently-reported metastable high-entropy dual-phase alloys is the formation of bcc martensite as a daughter phase, which shows significant effects on strain hardening. The hcp phase in the present MEA mostly acts as a nucleation site for the bcc martensite. Our findings demonstrate that the fcc to bcc transformation can be an attractive route to a new MEA design strategy for improving cryogenic strength-ductility.
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Affiliation(s)
- Y H Jo
- Center for High Entropy Alloys, Pohang University of Science and Technology, Pohang, 790-784, Korea
| | - W M Choi
- Center for High Entropy Alloys, Pohang University of Science and Technology, Pohang, 790-784, Korea
| | - D G Kim
- Center for High Entropy Alloys, Pohang University of Science and Technology, Pohang, 790-784, Korea
| | - A Zargaran
- Graduate Institute of Ferrous Technology, Pohang University of Science and Technology, Pohang, 790-784, Korea
| | - S S Sohn
- Center for High Entropy Alloys, Pohang University of Science and Technology, Pohang, 790-784, Korea.
| | - H S Kim
- Center for High Entropy Alloys, Pohang University of Science and Technology, Pohang, 790-784, Korea
| | - B J Lee
- Center for High Entropy Alloys, Pohang University of Science and Technology, Pohang, 790-784, Korea
| | - N J Kim
- Graduate Institute of Ferrous Technology, Pohang University of Science and Technology, Pohang, 790-784, Korea
| | - S Lee
- Center for High Entropy Alloys, Pohang University of Science and Technology, Pohang, 790-784, Korea
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35
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Nam BH, Park EH, Shin EH, Kim YO, Kim DG, Kong HJ, Park JY, Seo JK. Development of novel antimicrobial peptides derived from anti-lipopolysaccharide factor of the swimming crab, Portunus trituberculatus. Fish Shellfish Immunol 2019; 84:664-672. [PMID: 30336284 DOI: 10.1016/j.fsi.2018.10.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 10/08/2018] [Accepted: 10/10/2018] [Indexed: 06/08/2023]
Abstract
Anti-lipopolysaccharide factors (ALFs) are a representative host defense protein in crustaceans. In this study, we successfully developed two novel antimicrobial peptides (AMPs), named crab-ALF2A and crab-ALF6A, which contain changes to the amino acid sequences of the lipopolysaccharide binding domain and signal peptide, respectively, of the ALF of the swimming crab Portunus trituberculatus. The crab-ALF2A peptide showed potent antimicrobial activity against the Gram-positive bacteria Bacillus cereus, Staphylococcus aureus, and Streptococcus iniae (minimal effective concentration [MEC] 1.51-1.93 μg/mL) and the Gram-negative bacteria Pseudomonas aeruginosa and Escherichia coli (MEC 1.87-1.98 μg/mL), with maximal bactericidal activity at a peptide concentration of 5 μg/mL. The crab-ALF6A peptide also showed potent antimicrobial activity against B. cereus, S. aureus, and S. iniae (MEC 1.49-2.3 μg/mL) and P. aeruginosa and E. coli (MEC 1.72-1.19 μg/mL) at a peptide concentration of 5 μg/mL. Notably, the crab-ALF2A and crab-ALF6A peptides exhibited strong activity against Candida albicans (MECs of 2.11 and 1.95 μg/mL, respectively). These activities were stable following heat treatment. Moreover, the effect of crab-ALF2A and crab-ALF6A peptide treatment on microbe cell morphology was confirmed by scanning electron microscopy. Membrane disruption and damage, and the leakage of cytoplasmic content were clearly observed. A downsizing peptide approach illustrated that the hexapeptide ALF6A8 (RVLLRL) was the shortest peptide showing significant antimicrobial activity. Our approach allows for the generation of novel antimicrobial peptides in a cost effective manner as potential next-generation antibiotics.
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Affiliation(s)
- Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan, 619-705, Republic of Korea.
| | - Eun-Hee Park
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan, 619-705, Republic of Korea
| | - Eun-Ha Shin
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan, 619-705, Republic of Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan, 619-705, Republic of Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan, 619-705, Republic of Korea
| | - Hee Jeong Kong
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan, 619-705, Republic of Korea
| | - Jung Youn Park
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan, 619-705, Republic of Korea
| | - Jung-Kil Seo
- Department of Food Science and Biotechnology, Kunsan National University, Republic of Korea.
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36
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Cha EJ, Lee DS, Kim H, Kim YH, Kim BG, Yoo Y, Kim YS, Kim DG. Tailoring biomimetic polymer networks towards an unprecedented combination of versatile mechanical characteristics. RSC Adv 2019; 9:15780-15784. [PMID: 35521414 PMCID: PMC9064385 DOI: 10.1039/c9ra02760b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 05/13/2019] [Indexed: 12/02/2022] Open
Abstract
Biomimetic polymeric materials, adopting the basic molecular design principles of biological materials, have been extensively studied in recent years but it is still challenging to combine assorted mechanical characteristics in a single material. Here, we present a simple and effective strategy to prepare mechanically robust yet resilient biomimetic polymer networks by utilizing dual noncovalent and covalent cross-linkings. Tailoring the dual cross-links consisting of thiourea noncovalent interactions and epoxy–amine covalent linkages in the biomimetic polymer networks enables a rare combination of excellent elastic modulus (1.1 GPa), yield stress (39 MPa), extensibility (320%), as well as complete strain and performance recovery after deformation at room temperature. The biomimetic polymer networks also exhibit highly adaptive mechanical properties in response to multiple-stimuli including strain rate, temperature, light, and solvent. A simple and effective strategy to prepare biomimetic polymer networks with stiff, strong, tough, resilient, and adaptive mechanical properties, through controlling thiourea noncovalent and epoxy–amine covalent cross-linkings, is presented.![]()
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Affiliation(s)
- Eun Jung Cha
- Advanced Materials Division
- Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
| | - Dong Soo Lee
- Advanced Materials Division
- Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
| | - Hyohye Kim
- Advanced Materials Division
- Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
| | - Yun Ho Kim
- Advanced Materials Division
- Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
| | - Byoung Gak Kim
- Advanced Materials Division
- Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
| | - Youngjae Yoo
- Advanced Materials Division
- Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
| | - Yong Seok Kim
- Advanced Materials Division
- Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
| | - Dong-Gyun Kim
- Advanced Materials Division
- Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
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Kim NK, Cha EJ, Jung M, Kim J, Jeong GJ, Kim YS, Choi WJ, Kim BS, Kim DG, Lee JC. 3D hierarchical scaffolds enabled by a post-patternable, reconfigurable, and biocompatible 2D vitrimer film for tissue engineering applications. J Mater Chem B 2019. [DOI: 10.1039/c9tb00221a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A mechanically tissue-like, biocompatible vitrimer yields 3D hierarchical tissue engineering scaffolds via hot embossing patterning and additional reconfiguration processes.
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Affiliation(s)
- Na Kyung Kim
- School of Chemical and Biological Engineering, and Institute of Chemical Processes
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Eun Jung Cha
- Advanced Materials Division, Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
| | - Mungyo Jung
- School of Chemical and Biological Engineering, and Institute of Chemical Processes
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Jinseok Kim
- School of Chemical and Biological Engineering, and Institute of Chemical Processes
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Gun-Jae Jeong
- School of Chemical and Biological Engineering, and Institute of Chemical Processes
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Yong Seok Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
| | - Woo Jin Choi
- Chemical Materials Solutions Center
- Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
| | - Byung-Soo Kim
- School of Chemical and Biological Engineering, and Institute of Chemical Processes
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Dong-Gyun Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
| | - Jong-Chan Lee
- School of Chemical and Biological Engineering, and Institute of Chemical Processes
- Seoul National University
- Seoul 08826
- Republic of Korea
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38
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Oh R, Lee MJ, Kim YO, Nam BH, Kong HJ, Kim JW, Park JY, Seo JK, Kim DG. Purification and characterization of an antimicrobial peptide mytichitin-chitin binding domain from the hard-shelled mussel, Mytilus coruscus. Fish Shellfish Immunol 2018; 83:425-435. [PMID: 30195913 DOI: 10.1016/j.fsi.2018.09.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 08/23/2018] [Accepted: 09/05/2018] [Indexed: 06/08/2023]
Abstract
An antimicrobial peptide with 55 amino acid residues was purified by C18 reversed-phase high-performance liquid chromatography (HPLC) from foot extract of the hard-shelled mussel, Mytilus coruscus. This peptide showed strong antimicrobial activity against Gram-positive and Gram-negative bacteria, as well as fungi. The purified peptide was determined to have a molecular mass of 6202 Da by matrix-assisted laser desorption/ionization time-of-flight mass spectrophotometry (MALDI-TOF/MS). The identified 20-amino acid sequence of the purified peak by Edman degradation shared 100% identity with the N-terminal regions of mytichitin-1, mytichitin-2, mytichitin-3, mytichitin-4, mytichitin-5, and chitinase-like protein-1, and so was named mytichitin-CBD. The cDNA of mytichitin-CBD was cloned and sequenced by rapid amplification of cDNA ends (RACE). The mRNA transcripts were mainly detected in foot tissue, and they were up-regulated and peaked at 4 h after bacterial infection. We constructed and expressed recombinant mytichitin-CBD protein which displayed antimicrobial activity against Gram-negative bacteria Gram-positive bacteria and the fungus as well as anti-parasitic activity against scuticociliates. The results of this study demonstrate that the peptide isolated from M. coruscus is related to the innate immune system of this marine invertebrate and is a possible alternative to antibiotics.
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Affiliation(s)
- Ryunkyoung Oh
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Min Jeong Lee
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Hee Jeong Kong
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Ju-Won Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Jung Youn Park
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Jung-Kil Seo
- Department of Food Science and Biotechnology, Kunsan National University, Kunsan, 54150, Republic of Korea.
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea.
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39
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Kwon OH, Ha T, Kim DG, Kim BG, Kim YS, Shin TJ, Koh WG, Lim HS, Yoo Y. Anisotropy-Driven High Thermal Conductivity in Stretchable Poly(vinyl alcohol)/Hexagonal Boron Nitride Nanohybrid Films. ACS Appl Mater Interfaces 2018; 10:34625-34633. [PMID: 30216038 DOI: 10.1021/acsami.8b12075] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Controlling the anisotropy of two-dimensional materials with orientation-dependent heat transfer characteristics is a possible solution to resolve severe thermal issues in future electronic devices. We demonstrate a dramatic enhancement in the in-plane thermal conductivity of stretchable poly(vinyl alcohol) (PVA) nanohybrid films containing small amounts (below 10 wt %) of hexagonal boron nitride ( h-BN) nanoplatelets. The h-BN nanoplatelets were homogeneously dispersed in the PVA polymer solution by ultrasonication without additional surface modification. The mixture was used to prepare thermally conductive nanocomposite films. The in-plane thermal conductivity of the resulting PVA/ h-BN nanocomposite films increased to 6.4 W/mK when the strain was increased from 0 to 100% in the horizontal direction. More specifically, the thermal conductivity of a PVA/ h-BN composite film with 10 wt % filler loading can be improved by up to 32 times as compared to pristine PVA. This outstanding thermal conductivity value is significantly larger than that of materials currently used in in-plane thermal management systems. This result is attributed to the anisotropic alignment of h-BN particles in the PVA chain matrix during stretching, enhancing phonon conductive paths and hence improving the thermal conductivity and thermal properties of PVA/ h-BN nanocomposite films. These polymer nanocomposites have low cost as the amount of expensive conductive fillers is reduced and can be potentially used as high-performance materials for thermal management systems such as heat sink and thermal interface materials, for future electronic and electrical devices.
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Affiliation(s)
- O Hwan Kwon
- Division of Advanced Materials , Korea Research Institute of Chemical Technology , Daejeon 34114 , Republic of Korea
- Department of Chemical and Biomolecular Engineering , Yonsei University , Seoul 03722 , Republic of Korea
| | - Taeyong Ha
- Division of Advanced Materials , Korea Research Institute of Chemical Technology , Daejeon 34114 , Republic of Korea
- Department of Chemical and Biomolecular Engineering , Yonsei University , Seoul 03722 , Republic of Korea
| | - Dong-Gyun Kim
- Division of Advanced Materials , Korea Research Institute of Chemical Technology , Daejeon 34114 , Republic of Korea
- Department of Chemical Convergence Materials , University of Science & Technology , Daejeon 34113 , Republic of Korea
| | - Byoung Gak Kim
- Division of Advanced Materials , Korea Research Institute of Chemical Technology , Daejeon 34114 , Republic of Korea
- Department of Chemical Convergence Materials , University of Science & Technology , Daejeon 34113 , Republic of Korea
| | - Yong Seok Kim
- Division of Advanced Materials , Korea Research Institute of Chemical Technology , Daejeon 34114 , Republic of Korea
- Department of Chemical Convergence Materials , University of Science & Technology , Daejeon 34113 , Republic of Korea
| | - Tae Joo Shin
- UNIST Central Research Facility , Ulsan National Institute of Science and Technology (UNIST) , 50 UNIST-gil , Ulsan 44919 , Republic of Korea
| | - Won-Gun Koh
- Department of Chemical and Biomolecular Engineering , Yonsei University , Seoul 03722 , Republic of Korea
| | - Ho Sun Lim
- Department of Chemical and Biological Engineering , Sookmyung Women's University , Seoul 04310 , Republic of Korea
| | - Youngjae Yoo
- Division of Advanced Materials , Korea Research Institute of Chemical Technology , Daejeon 34114 , Republic of Korea
- Department of Chemical Convergence Materials , University of Science & Technology , Daejeon 34113 , Republic of Korea
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40
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Hong SY, Kim DG, Kim YO, Park JY, Seo JK, Nam BH, Hong YK. Purification and cDNA cloning of the antimicrobial peptide apMolluscidin from the pen shell, Atrina pectinata. Fish Shellfish Immunol 2018; 81:408-415. [PMID: 30055252 DOI: 10.1016/j.fsi.2018.07.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 07/18/2018] [Accepted: 07/21/2018] [Indexed: 06/08/2023]
Abstract
A 5.6 kDa antimicrobial peptide (AMP) was purified from acidified gill extract of the pen shell, Atrina pectinata, by cation exchange and C18 reversed-phase high performance liquid chromatography. Comparison of the amino acid sequences and molecular weight of this peptide with those of other known AMPs revealed that it had high sequence homology with that of cgMolluscidin or hdMolluscidin; it was designated apMolluscidin. apMolluscidin comprises 59 amino acid residues containing several dibasic residue repeats and sequence repeats such as Lys-Lys and Lys-Gly. apMolluscidin exhibited potent antimicrobial activity against both Gram-positive bacteria including Bacillus subtilis (minimal effective concentration [MEC], 2.1 μg/mL), and Gram-negative bacteria including E. coli D31 (MEC, 0.5 μg/mL), without hemolytic activity. However, it did not show any activity against fungi such as Candida albicans. Secondary structure prediction suggested that it might form two helical regions and have an amphipathic structure. Full-length apMolluscidin cDNA contained 812 base pairs (bp), including a 5'-untranslated region (UTR) of 82 bp, a 3'-UTR of 547 bp, and a coding sequence of 183 bp encoding 60 amino acids (containing Met). Furthermore, qPCR analyses revealed that the mature peptide translated from apMolluscidin mRNA is expressed in a tissue-specific manner in locations such as the gill and siphon. These results indicate that apMolluscidin might be related to the innate immune defense system of abalone and may not act directly on the bacterial membrane. This is the first report of an AMP from the pen shell with a fully identified amino acid sequence.
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Affiliation(s)
- Sung-Youl Hong
- Department of Biotechnology, Pukyong National University, Busan 48513, Republic of Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Jung Youn Park
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Jung-Kil Seo
- Department of Food Science and Biotechnology, Kunsan National University, Kunsan 54150, Republic of Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea.
| | - Yong-Ki Hong
- Department of Biotechnology, Pukyong National University, Busan 48513, Republic of Korea.
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41
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Yoo S, Kim DG, Ha T, Chan Won J, Jang KS, Kim YH. Solution-Processable, Thin, and High-κ Dielectric Polyurea Gate Insulator with Strong Hydrogen Bonding for Low-Voltage Organic Thin-Film Transistors. ACS Appl Mater Interfaces 2018; 10:32462-32470. [PMID: 30175586 DOI: 10.1021/acsami.8b11083] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
We developed a solution-processable, thin, and high-dielectric polyurea-based organic gate insulator for low-voltage operation and high performance of organic thin-film transistors (OTFTs). A 60 nm-thick polyurea thin film exhibited a high dielectric constant of 5.82 and excellent electrical insulating properties owing to strong hydrogen bonding. The hydrogen bonding of the synthesized polyurea was confirmed using infrared spectroscopy and was quantitatively evaluated by measuring the interactive force using atomic force microscopy. Moreover, the effect of hydrogen bonding of polyurea on the insulating properties was systematically investigated through the combination of various monomers and control of the thickness of the polyurea film. The dinaphtho[2,3- b:2',3'- f]thieno[3,2- b]thiophene-based OTFTs with the polyurea gate insulator showed excellent thin-film transistor (TFT) performance with a field-effect mobility of 1.390 cm2/V·s and an on/off ratio of ∼105 at a low operation voltage below 2 V. In addition, it is possible to fabricate flexible polymer organic semiconductor (OSC)-based TFT devices using a solution process, owing to excellent solvent stability in various organic solvents. We believe that the solution-processable polyurea gate insulator with a high dielectric constant and good insulation properties is a promising candidate for low-voltage-operated OTFTs using various OSCs.
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Affiliation(s)
- Sungmi Yoo
- Advanced Materials Division , Korea Research Institute of Chemical Technology , Daejeon 34114 , Republic of Korea
| | - Dong-Gyun Kim
- Advanced Materials Division , Korea Research Institute of Chemical Technology , Daejeon 34114 , Republic of Korea
- Chemical Convergence Materials and Processes , KRICT School, University of Science and Technology , Daejeon 34113 , Republic of Korea
| | - Taewook Ha
- Advanced Materials Division , Korea Research Institute of Chemical Technology , Daejeon 34114 , Republic of Korea
- Department of Chemistry , Korea University , Seoul 02841 , Republic of Korea
| | - Jong Chan Won
- Advanced Materials Division , Korea Research Institute of Chemical Technology , Daejeon 34114 , Republic of Korea
- Chemical Convergence Materials and Processes , KRICT School, University of Science and Technology , Daejeon 34113 , Republic of Korea
| | - Kwang-Suk Jang
- Department of Chemical and Molecular Engineering , Hanyang University , Ansan 15588 , Republic of Korea
| | - Yun Ho Kim
- Advanced Materials Division , Korea Research Institute of Chemical Technology , Daejeon 34114 , Republic of Korea
- Chemical Convergence Materials and Processes , KRICT School, University of Science and Technology , Daejeon 34113 , Republic of Korea
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42
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Kim JW, Oh BG, Kim J, Kim DG, Nam BH, Kim YO, Park JY, Cheong J, Kong HJ. Development and Characterization of a New Cell Line from Olive Flounder Paralichthys olivaceus. Dev Reprod 2018; 22:225-234. [PMID: 30324159 PMCID: PMC6182235 DOI: 10.12717/dr.2018.22.3.225] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 08/07/2018] [Accepted: 08/31/2018] [Indexed: 11/17/2022]
Abstract
A new embryonic cell line (OFEC-17FEN) derived from olive flounder Paralichthys olivaceus was developed. OFEC-17FEN cells were subcultured for <30 passages over ~200 days. OFEC-17FEN cells had a doubling time of 114.34 h and modal diploid chromosome number was 48. The pluripotency genes POU5f1 and NANOG were expressed in OFEC-17FEN cells. However, the lack of several pluripotency-related genes expression indicates that OFEC-17FEN cells are not stem cells. OFEC-17FEN cells transfected with plasmid pEGFP-c1 exhibited a strong green fluorescent signal at 48 h after transfection. Accordingly, OFEC-17FEN cells may be useful for both basic research and biotechnological application.
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Affiliation(s)
- Ju-Won Kim
- Biotechnology Research Division, National
Institute of Fisheries Science, Busan 46083,
Korea
| | - Bang Geun Oh
- Biotechnology Research Division, National
Institute of Fisheries Science, Busan 46083,
Korea
| | - Julan Kim
- Biotechnology Research Division, National
Institute of Fisheries Science, Busan 46083,
Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National
Institute of Fisheries Science, Busan 46083,
Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National
Institute of Fisheries Science, Busan 46083,
Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National
Institute of Fisheries Science, Busan 46083,
Korea
| | - Jung Youn Park
- Biotechnology Research Division, National
Institute of Fisheries Science, Busan 46083,
Korea
| | - JaeHun Cheong
- Dept. of Integrated Biological Science, Pusan
National University, Busan 43241,
Korea
| | - Hee Jeong Kong
- Biotechnology Research Division, National
Institute of Fisheries Science, Busan 46083,
Korea
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43
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Kim J, Kim JW, Kim DG, Nam BH, Kim YO, Park JY, Kong HJ. Molecular characterization of Rhodeus uyekii tripartite motif protein 1 (TRIM1) involved in IFN-γ/LPS-induced NF-κB signaling. Fish Shellfish Immunol 2018; 79:42-51. [PMID: 29747011 DOI: 10.1016/j.fsi.2018.05.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/30/2018] [Accepted: 05/06/2018] [Indexed: 06/08/2023]
Abstract
The tripartite motif-containing (TRIM) proteins are involved in a wide range of cellular processes, and the role of TRIM1 in immunity has been explored. However, fundamental studies on fish TRIM1 are lacking. In this study, we cloned and characterized TRIM1 cDNA from the Korean rose bitterling, Rhodeus uyekii (RuTRIM1). Two RuTRIM1 isoforms (RuTRIM1-X1 and RuTRIM1-X2) were identified. The coding sequence (CDS) of RuTRIM1-X1 comprised 2157 bp encoding a 718-aa protein, and the CDS of RuTRIM1-X2 comprised 1929 bp encoding a 642-aa protein. Both RuTRIM1 isoforms contained a RING finger domain, B-box 1, B-box 2, coiled-coil domain, COS box, FN3 motif, and PRY/SPRY domain. The deduced RuTRIM1-X1 and RuTRIM1-X2 proteins had high amino acid identity (76.27-98.89%) with orthologs from various other species, and a phylogenetic tree was constructed. RuTRIM1-X1 and RuTRIM1-X2 mRNA were expressed in all tissues examined, with the highest expression levels detected in the hepatopancreas. During early development, RuTRIM1-X1 and RuTRIM1-X2 mRNA levels changed differently from the gastrula period to the first feeding stage. An in vivo ubiquitination assay showed that RuTRIM1 exhibited RING-dependent E3 ubiquitin ligase activity, mainly by comparing RuTRIM1-X2 to RuTRIM1-X1. The subcellular localization of the two RuTRIM1 protein isoforms was characterized, revealing that they formed aggregates in cytoplasmic bodies in Raw264.7 cells. Interferon-γ/lipopolysaccharide-induced nuclear factor-κB signaling was negatively regulated by RuTRIM1-X1 and RuTRIM1-X2, and the negative effect was reversed in RING deletion mutants. To our knowledge, this is the first study to characterize fish TRIM1, which may play a role in the inflammatory response.
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Affiliation(s)
- Julan Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Ju-Won Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Jung Youn Park
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Hee Jeong Kong
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea.
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Kim YO, Park IS, Park S, Nam BH, Kim DG, Choi SG, Bae JW, Yoon JH. Corrigendum: Bizionia berychis sp. nov., isolated from intestinal tract of a splendid alfonsino (Beryx splendens). Int J Syst Evol Microbiol 2018; 68:2114. [PMID: 29855403 DOI: 10.1099/ijsem.0.002790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - In-Suk Park
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Sooyeon Park
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon 16419, Republic of Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Seok-Gwan Choi
- Distant-water Fisheries Resources Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Jin-Woo Bae
- Department of Biology, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jung-Hoon Yoon
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon 16419, Republic of Korea
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45
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Kim YO, Park IS, Park S, Nam BH, Kim DG, Won SM, Yoon JH. Corrigendum: Paracoccus alimentarius sp. nov., isolated from a Korean foodstuff, salted pollack. Int J Syst Evol Microbiol 2018; 68:2113. [PMID: 29855405 DOI: 10.1099/ijsem.0.002789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - In-Suk Park
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Sooyeon Park
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon 16419, Republic of Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Sung-Min Won
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Jung-Hoon Yoon
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon 16419, Republic of Korea
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46
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Lee SJ, Kim DG, Lee KY, Koo JS, Lee BJ. Regulatory mechanisms of thiol-based redox sensors: lessons learned from structural studies on prokaryotic redox sensors. Arch Pharm Res 2018; 41:583-593. [PMID: 29777359 DOI: 10.1007/s12272-018-1036-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 05/01/2018] [Indexed: 01/29/2023]
Abstract
Oxidative stresses, such as reactive oxygen species, reactive electrophilic species, reactive nitrogen species, and reactive chlorine species, can damage cellular components, leading to cellular malfunction and death. In response to oxidative stress, bacteria have evolved redox-responsive sensors that enable them to simultaneously monitor and eradicate potential oxidative stress. Specifically, redox-sensing transcription regulators react to oxidative stress by means of modifying the thiol groups of cysteine residues, functioning as part of an efficient survival mechanism for many bacteria. In general, oxidative molecules can induce changes in the three-dimensional structures of redox sensors, which, in turn, affects the transcription of specific genes in detoxification pathways and defense mechanisms. Moreover, pathogenic bacteria utilize these redox sensors for adaptation and to evade subsequent oxidative attacks from host immune defense. For this reason, the redox sensors of pathogenic bacteria are potential antibiotic targets. Understanding the regulatory mechanisms of thiol-based redox sensors in bacteria will provide insight and knowledge into the discovery of new antibiotics.
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Affiliation(s)
- Sang Jae Lee
- The Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Dong-Gyun Kim
- The Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Kyu-Yeon Lee
- The Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Ji Sung Koo
- The Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Bong-Jin Lee
- The Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.
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47
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Kang BG, Kim DG, Register RA. Vinyl Addition Copolymers of Norbornylnorbornene and Hydroxyhexafluoroisopropylnorbornene for Efficient Recovery of n-Butanol from Dilute Aqueous Solution via Pervaporation. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00470] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Beom-Goo Kang
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Dong-Gyun Kim
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Richard A. Register
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
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48
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Kim YO, Park IS, Park S, Nam BH, Kim DG, Choi SG, Bae JW, Yoon JH. Bizionia berychis sp. nov., isolated from intestinal tract of a splendid alfonsino (Beryx splendens). Int J Syst Evol Microbiol 2018; 68:1227-1232. [DOI: 10.1099/ijsem.0.002656] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - In-Suk Park
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Sooyeon Park
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon 16419, Republic of Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Seok-Gwan Choi
- Distant-water Fisheries Resources Division, National Institute of Fisheries Science (NIFS), Gijang, Busan 46083, Republic of Korea
| | - Jin-Woo Bae
- Department of Biology, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jung-Hoon Yoon
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon 16419, Republic of Korea
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49
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Nam BH, Kwak W, Kim YO, Kim DG, Kong HJ, Kim WJ, Kang JH, Park JY, An CM, Moon JY, Park CJ, Yu JW, Yoon J, Seo M, Kim K, Kim DK, Lee S, Sung S, Lee C, Shin Y, Jung M, Kang BC, Shin GH, Ka S, Caetano-Anolles K, Cho S, Kim H. Genome sequence of pacific abalone (Haliotis discus hannai): the first draft genome in family Haliotidae. Gigascience 2018; 6:1-8. [PMID: 28327967 PMCID: PMC5439488 DOI: 10.1093/gigascience/gix014] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 03/02/2017] [Indexed: 11/18/2022] Open
Abstract
Background: Abalones are large marine snails in the family Haliotidae and the genus Haliotis belonging to the class Gastropoda of the phylum Mollusca. The family Haliotidae contains only one genus, Haliotis, and this single genus is known to contain several species of abalone. With 18 additional subspecies, the most comprehensive treatment of Haliotidae considers 56 species valid [1]. Abalone is an economically important fishery and aquaculture animal that is considered a highly prized seafood delicacy. The total global supply of abalone has increased 5-fold since the 1970s and farm production increased explosively from 50 mt to 103 464 mt in the past 40 years. Additionally, researchers have recently focused on abalone given their reported tumor suppression effect. However, despite the valuable features of this marine animal, no genomic information is available for the Haliotidae family and related research is still limited. To construct the H. discus hannai genome, a total of 580-G base pairs using Illumina and Pacbio platforms were generated with 322-fold coverage based on the 1.8-Gb estimated genome size of H. discus hannai using flow cytometry. The final genome assembly consisted of 1.86 Gb with 35 450 scaffolds (>2 kb). GC content level was 40.51%, and the N50 length of assembled scaffolds was 211 kb. We identified 29 449 genes using Evidence Modeler based on the gene information from ab initio prediction, protein homology with known genes, and transcriptome evidence of RNA-seq. Here we present the first Haliotidae genome, H. discus hannai, with sequencing data, assembly, and gene annotation information. This will be helpful for resolving the lack of genomic information in the Haliotidae family as well as providing more opportunities for understanding gastropod evolution.
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Affiliation(s)
- Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan 619-705, Korea
| | - Woori Kwak
- Interdisciplinary Program in Bioinformatics, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-747, Republic of Korea.,C&K Genomics, Main Bldg. #420, SNU Research Park, Gwanak-ro 1, Gwanak-gu, Seoul 151-919, Republic of Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan 619-705, Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan 619-705, Korea
| | - Hee Jeong Kong
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan 619-705, Korea
| | - Woo-Jin Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan 619-705, Korea
| | - Jeong-Ha Kang
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan 619-705, Korea
| | - Jung Youn Park
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan 619-705, Korea
| | - Cheul Min An
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan 619-705, Korea
| | - Ji-Young Moon
- Biotechnology Research Division, National Institute of Fisheries Science, Haean-ro 216, Gijang-eup, Gijang-gun, Busan 619-705, Korea
| | - Choul Ji Park
- Genetics and Breeding Research Center, National Institute of Fisheries Science, 81-9, Geojenamseo-ro, Dapo-ri, Nambu-myeon, Geoje-si, Gyeongsangnam-do 53334, Republic of Korea
| | - Jae Woong Yu
- C&K Genomics, Main Bldg. #420, SNU Research Park, Gwanak-ro 1, Gwanak-gu, Seoul 151-919, Republic of Korea
| | - Joon Yoon
- Interdisciplinary Program in Bioinformatics, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-747, Republic of Korea
| | - Minseok Seo
- C&K Genomics, Main Bldg. #420, SNU Research Park, Gwanak-ro 1, Gwanak-gu, Seoul 151-919, Republic of Korea
| | - Kwondo Kim
- Interdisciplinary Program in Bioinformatics, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-747, Republic of Korea.,C&K Genomics, Main Bldg. #420, SNU Research Park, Gwanak-ro 1, Gwanak-gu, Seoul 151-919, Republic of Korea
| | - Duk Kyung Kim
- C&K Genomics, Main Bldg. #420, SNU Research Park, Gwanak-ro 1, Gwanak-gu, Seoul 151-919, Republic of Korea
| | - SaetByeol Lee
- C&K Genomics, Main Bldg. #420, SNU Research Park, Gwanak-ro 1, Gwanak-gu, Seoul 151-919, Republic of Korea
| | - Samsun Sung
- C&K Genomics, Main Bldg. #420, SNU Research Park, Gwanak-ro 1, Gwanak-gu, Seoul 151-919, Republic of Korea
| | - Chul Lee
- Interdisciplinary Program in Bioinformatics, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-747, Republic of Korea.,C&K Genomics, Main Bldg. #420, SNU Research Park, Gwanak-ro 1, Gwanak-gu, Seoul 151-919, Republic of Korea
| | - Younhee Shin
- Research and Development Center, Insilicogen Inc., 13, Heungdeok 1-ro, Giheung-gu, Yongin-si , Gyeonggi-do 16954, Republic of Korea
| | - Myunghee Jung
- Research and Development Center, Insilicogen Inc., 13, Heungdeok 1-ro, Giheung-gu, Yongin-si , Gyeonggi-do 16954, Republic of Korea
| | - Byeong-Chul Kang
- Research and Development Center, Insilicogen Inc., 13, Heungdeok 1-ro, Giheung-gu, Yongin-si , Gyeonggi-do 16954, Republic of Korea
| | - Ga-Hee Shin
- Research and Development Center, Insilicogen Inc., 13, Heungdeok 1-ro, Giheung-gu, Yongin-si , Gyeonggi-do 16954, Republic of Korea
| | - Sojeong Ka
- Animal Science and Biotechnology, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-747, Republic of Korea
| | - Kelsey Caetano-Anolles
- Animal Science and Biotechnology, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-747, Republic of Korea
| | - Seoae Cho
- C&K Genomics, Main Bldg. #420, SNU Research Park, Gwanak-ro 1, Gwanak-gu, Seoul 151-919, Republic of Korea
| | - Heebal Kim
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-921, Republic of Korea
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Lee JM, Kim JH, Kim KW, Lee BJ, Kim DG, Kim YO, Lee JH, Kong IS. Physicochemical properties, production, and biological functionality of poly-γ-d-glutamic acid with constant molecular weight from halotolerant Bacillus sp. SJ-10. Int J Biol Macromol 2018; 108:598-607. [DOI: 10.1016/j.ijbiomac.2017.12.055] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 07/25/2017] [Accepted: 12/08/2017] [Indexed: 12/13/2022]
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