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Lu Z, Jiang H, Yang D, Tang H, Hamouda HI, Wang T, Mao X. Characterization of a λ-Carrageenase Mutant with the Generation of Long-Chain λ-Neocarrageenan Oligosaccharides. Foods 2024; 13:1923. [PMID: 38928863 PMCID: PMC11202985 DOI: 10.3390/foods13121923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 06/12/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
λ-carrageenan oligosaccharides can be widely applied in the food, pharmaceutical, medicine and cosmetic industries due to their abundant bioactivities, and they are important products for the high-value utilization of λ-carrageenan. However, oligosaccharides with different degrees of polymerization have different properties, and the final products of λ-carrageenase reported so far are mainly λ-neocarrabiose, λ-neocarratetraose and λ-neocarrahexaose without longer-chain oligosaccharides. Further research is consequently required. Herein, a mutant λ-carrageenase was constructed by deleting the pyrroloquinoline quinone-like domain of OUC-CglA derived from Maribacter vaceletii. Interestingly, it was discovered that the majority of final products of the mutant OUC-CglA-DPQQ were long-chain oligosaccharides with a polymerization degree of 10-20, which underwent significant changes compared to that of OUC-CglA. Additionally, without the pyrroloquinoline quinone-like domain, fewer inclusion bodies were produced throughout the expression process, and the yield of the λ-carrageenase increased about five-fold. However, compared to its parental enzyme, significant changes were made to its enzymatic properties. Its optimal temperature and pH were 15 °C and pH 7.0, and its specific activity was 51.59 U/mg. The stability of the enzyme decreased. Thus, it was found that the deleting domain was related to the formation of inclusion bodies, the stability of the enzyme, the activity of the enzyme and the composition of the products.
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Affiliation(s)
- Zewei Lu
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Hong Jiang
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Qingdao Key Laboratory of Food Biotechnology, Qingdao 266404, China
- Key Laboratory of Biological Processing of Aquatic Products, China National Light Industry, Qingdao 266404, China
- Sanya Ocean Institute, Ocean University of China, Sanya 572024, China
| | - Dianqi Yang
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hengxin Tang
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Hamed I. Hamouda
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Tao Wang
- Sanya Ocean Institute, Ocean University of China, Sanya 572024, China
| | - Xiangzhao Mao
- State Key Laboratory of Marine Food Processing and Safety Control, College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Qingdao Key Laboratory of Food Biotechnology, Qingdao 266404, China
- Key Laboratory of Biological Processing of Aquatic Products, China National Light Industry, Qingdao 266404, China
- Sanya Ocean Institute, Ocean University of China, Sanya 572024, China
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Kim M, Oh JW, Jeong DW, Cho BH, Chang J, Shi X, Han SO. Biosynthesis of l-histidine from marine biomass-derived galactans in metabolically engineered Corynebacterium glutamicum. BIORESOURCE TECHNOLOGY 2024; 391:129963. [PMID: 37925085 DOI: 10.1016/j.biortech.2023.129963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 10/30/2023] [Accepted: 10/30/2023] [Indexed: 11/06/2023]
Abstract
l-Histidine plays significant roles in the food and pharmaceutical industries, and its demand has been steadily increasing recently. As demand for l-histidine continues, the development of eco-friendly processes is required. To pursue this goal, D-galactose, a primary component of red algae, was employed as a carbon source for synthesizing l-histidine. To harness this marine biomass, κ-carrageenan was preferentially hydrolyzed to obtain D-galactose using κ-carrageenase (CgkA) and iduronate-2-sulfatase (IdsA3). Subsequently, l-histidine production was enhanced by modifying precursor pathways in Corynebacterium glutamicum. The resulting strain, TDPH6 exhibited a remarkable 2.15-fold increase in l-histidine production compared to TDP. Furthermore, a galactose utilization system was introduced and named TDPH6G2. During fermentation, this strain efficiently consumed 100 % of the D-galactose and synthesized 0.395 g/L of l-histidine. In conclusion, this study presents a sustainable approach to L-histidine synthesis by introducing a galactose utilization system into C. glutamicum.
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Affiliation(s)
- Minhye Kim
- Department of Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Jun Won Oh
- Department of Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Da Woon Jeong
- Department of Biotechnology, Korea University, Seoul 02841, Republic of Korea; Amtixbio CO., LTD., Seoul 01411, Republic of Korea
| | - Byeong-Hyeon Cho
- Department of Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Joonhee Chang
- Department of Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Xiaoyu Shi
- Department of Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Sung Ok Han
- Department of Biotechnology, Korea University, Seoul 02841, Republic of Korea; Institute of Life Science and Natural Resources, Korea University, Seoul 02841, Republic of Korea.
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Muhammad N, Avila F, Nedashkovskaya OI, Kim SG. Three novel marine species of the genus Reichenbachiella exhibiting degradation of complex polysaccharides. Front Microbiol 2023; 14:1265676. [PMID: 38156005 PMCID: PMC10752948 DOI: 10.3389/fmicb.2023.1265676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Accepted: 11/23/2023] [Indexed: 12/30/2023] Open
Abstract
Three novel strains designated ABR2-5T, BKB1-1T, and WSW4-B4T belonging to the genus Reichenbachiella of the phylum Bacteroidota were isolated from algae and mud samples collected in the West Sea, Korea. All three strains were enriched for genes encoding up to 216 carbohydrate-active enzymes (CAZymes), which participate in the degradation of agar, alginate, carrageenan, laminarin, and starch. The 16S rRNA sequence similarities among the three novel isolates were 94.0%-94.7%, and against all three existing species in the genus Reichenbachiella they were 93.6%-97.2%. The genome sizes of the strains ABR2-5T, BKB1-1T, and WSW4-B4T were 5.5, 4.4, and 5.0 Mb, respectively, and the GC content ranged from 41.1%-42.0%. The average nucleotide identity and the digital DNA-DNA hybridization values of each novel strain within the isolates and all existing species in the genus Reichenbachiella were in a range of 69.2%-75.5% and 17.7-18.9%, respectively, supporting the creation of three new species. The three novel strains exhibited a distinctive fatty acid profile characterized by elevated levels of iso-C15:0 (37.7%-47.4%) and C16:1 ω5c (14.4%-22.9%). Specifically, strain ABR2-5T displayed an additional higher proportion of C16:0 (13.0%). The polar lipids were phosphatidylethanolamine, unidentified lipids, aminolipids, and glycolipids. Menaquinone-7 was identified as the respiratory quinone of the isolates. A comparative genome analysis was performed using the KEGG, RAST, antiSMASH, CRISPRCasFinder, dbCAN, and dbCAN-PUL servers and CRISPRcasIdentifier software. The results revealed that the isolates harbored many key genes involved in central metabolism for the synthesis of essential amino acids and vitamins, hydrolytic enzymes, carotenoid pigments, and antimicrobial compounds. The KEGG analysis showed that the three isolates possessed a complete pathway of dissimilatory nitrate reduction to ammonium (DNRA), which is involved in the conservation of bioavailable nitrogen within the ecosystem. Moreover, all the strains possessed genes that participated in the metabolism of heavy metals, including arsenic, copper, cobalt, ferrous, and manganese. All three isolated strains contain the class 2 type II subtype C1 CRISPR-Cas system in their genomes. The distinguished phenotypic, chemotaxonomic, and genomic characteristics led us to propose that the three strains represent three novel species in the genus Reichenbachiella: R. ulvae sp. nov. (ABR2-5T = KCTC 82990T = JCM 35839T), R. agarivorans sp. nov. (BKB1-1T = KCTC 82964T = JCM 35840T), and R. carrageenanivorans sp. nov. (WSW4-B4T = KCTC 82706T = JCM 35841T).
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Affiliation(s)
- Neak Muhammad
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
- Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Forbes Avila
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
- Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Olga I. Nedashkovskaya
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry of the Far-Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
| | - Song-Gun Kim
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
- Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), Daejeon, Republic of Korea
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Liu Y, Jia K, Chen H, Wang Z, Zhao W, Zhu L. Cold-adapted enzymes: mechanisms, engineering and biotechnological application. Bioprocess Biosyst Eng 2023; 46:1399-1410. [PMID: 37486422 DOI: 10.1007/s00449-023-02904-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 07/05/2023] [Indexed: 07/25/2023]
Abstract
Most cold-adapted enzymes display high catalytic activity at low temperatures (20-25 °C) and can still maintain more than 40-50% of their maximum activity at lower temperatures (0-10 °C) but are inactivated after a moderate increase in temperature. The activity of some cold-adapted enzymes increases significantly in the presence of high salt concentrations and metal ions. Interestingly, we also observed that some cold-adapted enzymes have a wide range of optimum temperatures, exhibiting not only maximum activity under low-temperature conditions but also the ability to maintain high enzyme activity under high-temperature conditions, which is a novel feature of cold-adapted enzymes. This unique property of cold-adapted enzymes is generally attractive for biotechnological and industrial applications because these enzymes can reduce energy consumption and the chance of microbial contamination, thereby lowering the production costs and maintaining the flavor, taste and quality of foods. How high catalytic activity is maintained at low temperatures remains unknown. The relationship between the structure of cold-adapted enzymes and their activity, flexibility and stability is complex, and thus far, a unified explanation has not been provided. Herein, we systematically review the sources, catalytic characteristics and cold adaptation of enzymes from four enzymes categories systematically and discuss how these properties may be exploited in biotechnology. A thorough understanding of the properties, catalytic mechanisms, and engineering of cold-adapted enzymes is critical for future biotechnological applications in the detergent industry and food and beverage industries.
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Affiliation(s)
- Yan Liu
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education and Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratory of Industrial Microbiology, National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Hubei University of Technology, Wuhan, 430068, China
| | - Kaizhi Jia
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education and Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratory of Industrial Microbiology, National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Hubei University of Technology, Wuhan, 430068, China
| | - Hongyang Chen
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education and Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratory of Industrial Microbiology, National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Hubei University of Technology, Wuhan, 430068, China
| | - Zhulin Wang
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education and Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratory of Industrial Microbiology, National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Hubei University of Technology, Wuhan, 430068, China
| | - Wei Zhao
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Liwen Zhu
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education and Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratory of Industrial Microbiology, National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Hubei University of Technology, Wuhan, 430068, China.
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Jiang C, Secundo F, Mao X. Expanding the application range of the κ‑carrageenase OUC-FaKC16A when preparing oligosaccharides from κ-carrageenan and furcellaran. MARINE LIFE SCIENCE & TECHNOLOGY 2023; 5:387-399. [PMID: 37637255 PMCID: PMC10449746 DOI: 10.1007/s42995-023-00181-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 05/10/2023] [Indexed: 08/29/2023]
Abstract
Carrageenan oligosaccharides are important products that have demonstrated numerous bioactivities useful in the food, medicine, and cosmetics industries. However, the specific structure-function relationships of carrageenan oligosaccharides are not clearly described due to the deficiency of high specific carrageenases. Here, a truncated mutant OUC-FaKC16Q based on the reported κ-neocarratetrose (Nκ4)-producing κ-carrageenase OUC-FaKC16A from Flavobacterium algicola was constructed and further studied. After truncating the C-terminal Por_Secre_tail (PorS) domain (responsible for substrate binding), the catalytic efficiency and temperature stability decreased to a certain extent. Surprisingly, this truncation also enabled OUC-FaKC16Q to hydrolyze Nκ4 into κ-neocarrabiose (Nκ2). The offset of Arg265 residue in OUC-FaKC16Q may explain this change. Moreover, the high catalytic abilities, the main products, and the degradation modes of OUC-FaKC16A and OUC-FaKC16Q toward furcellaran were also demonstrated. Data suggested OUC-FaKC16A and OUC-FaKC16Q could hydrolyze furcellaran to produce mainly the desulfated oligosaccharides DA-G-(DA-G4S)2 and DA-G-DA-G4S, respectively. As a result, the spectrum of products of κ-carrageenase OUC-FaKC16A has been fully expanded in this study, indicating its promising potential for application in the biomanufacturing of carrageenan oligosaccharides with specific structures. Supplementary Information The online version contains supplementary material available at 10.1007/s42995-023-00181-2.
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Affiliation(s)
- Chengcheng Jiang
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003 China
- Key Laboratory for Biological Processing of Aquatic Products, China National Light Industry, Qingdao, 266237 China
| | - Francesco Secundo
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”, Consiglio Nazionale delle Ricerche, Via Mario Bianco 9, 20131 Milan, Italy
| | - Xiangzhao Mao
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003 China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237 China
- Key Laboratory for Biological Processing of Aquatic Products, China National Light Industry, Qingdao, 266237 China
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6
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Eze OC, Berebon DP, Emencheta SC, Evurani SA, Okorie CN, Balcão VM, Vila MMDC. Therapeutic Potential of Marine Probiotics: A Survey on the Anticancer and Antibacterial Effects of Pseudoalteromonas spp. Pharmaceuticals (Basel) 2023; 16:1091. [PMID: 37631006 PMCID: PMC10458718 DOI: 10.3390/ph16081091] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 07/17/2023] [Accepted: 07/28/2023] [Indexed: 08/27/2023] Open
Abstract
Due to the increasing limitations and negative impacts of the current options for preventing and managing diseases, including chemotherapeutic drugs and radiation, alternative therapies are needed, especially ones utilizing and maximizing natural products (NPs). NPs abound with diverse bioactive primary and secondary metabolites and compounds with therapeutic properties. Marine probiotics are beneficial microorganisms that inhabit marine environments and can benefit their hosts by improving health, growth, and disease resistance. Several studies have shown they possess potential bioactive and therapeutic actions against diverse disease conditions, thus opening the way for possible exploitation of their benefits through their application. Pseudoalteromonas spp. are a widely distributed heterotrophic, flagellated, non-spore-forming, rod-shaped, and gram-negative marine probiotic bacteria species with reported therapeutic capabilities, including anti-cancer and -bacterial effects. This review discusses the basic concepts of marine probiotics and their therapeutic effects. Additionally, a survey of the anticancer and antibacterial effects of Pseudoalteromonas spp. is presented. Finally, marine probiotic production, advances, prospects, and future perspectives is presented.
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Affiliation(s)
- Osita C. Eze
- Department of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka 410001, Nigeria; (O.C.E.); (S.A.E.); (C.N.O.)
| | - Dinebari P. Berebon
- Department of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka 410001, Nigeria; (O.C.E.); (S.A.E.); (C.N.O.)
| | - Stephen C. Emencheta
- Department of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka 410001, Nigeria; (O.C.E.); (S.A.E.); (C.N.O.)
- PhageLab-Laboratory of Biofilms and Bacteriophages, University of Sorocaba, Sorocaba 18023-000, Brazil; (V.M.B.); (M.M.D.C.V.)
| | - Somtochukwu A. Evurani
- Department of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka 410001, Nigeria; (O.C.E.); (S.A.E.); (C.N.O.)
| | - Chibundo N. Okorie
- Department of Pharmaceutical Microbiology and Biotechnology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka 410001, Nigeria; (O.C.E.); (S.A.E.); (C.N.O.)
| | - Victor M. Balcão
- PhageLab-Laboratory of Biofilms and Bacteriophages, University of Sorocaba, Sorocaba 18023-000, Brazil; (V.M.B.); (M.M.D.C.V.)
- Department of Biology and CESAM, University of Aveiro, Campus Universitário de Santiago, P-3810-193 Aveiro, Portugal
| | - Marta M. D. C. Vila
- PhageLab-Laboratory of Biofilms and Bacteriophages, University of Sorocaba, Sorocaba 18023-000, Brazil; (V.M.B.); (M.M.D.C.V.)
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Chen D, Dong Y, Bao Y, Xiu Z. Salting-out extraction of recombinant κ-carrageenase and phage T7 released from Escherichia coli cells. Eng Life Sci 2023; 23:e2200125. [PMID: 37275213 PMCID: PMC10235888 DOI: 10.1002/elsc.202200125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 04/18/2023] [Accepted: 05/07/2023] [Indexed: 06/07/2023] Open
Abstract
Traditional technology of cell disruption has become one of the bottlenecks restricting the industrialization of genetic engineering products due to its high cost and low efficiency. In this study, a novel bioprocess of phage lysis coupled with salting-out extraction (SOE) was evaluated. The lysis effect of T7 phage on genetically engineered Escherichia coli expressing κ-carrageenase was investigated at different multiplicity of infection (MOI), meanwhile the phage and enzyme released into the lysate were separated by SOE. It was found that T7 phage could lyse 99.9% of host cells at MOI = 1 and release more than 90.0% of enzyme within 90 min. After phage lysis, 87.1% of T7 phage and 71.2% of κ-carrageenase could be distributed at the middle phase and the bottom phase, respectively, in the SOE system composed of 16% ammonium sulfate and 20% ethyl acetate (w/w). Furthermore, κ-carrageenase in the bottom phase could be salted out by ammonium sulfate with a yield of 40.1%. Phage lysis exhibits some advantages, such as mild operation conditions and low cost. While SOE can efficiently separate phage and intracellular products. Therefore, phage lysis coupled with SOE is expected to become a viable alternative to the classical cell disruption and intracellular product recovery.
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Affiliation(s)
- Da Chen
- School of BioengineeringDalian University of TechnologyDalianLiaoningPR China
| | - Yue‐Sheng Dong
- School of BioengineeringDalian University of TechnologyDalianLiaoningPR China
| | - Yong‐Ming Bao
- School of BioengineeringDalian University of TechnologyDalianLiaoningPR China
| | - Zhi‐Long Xiu
- School of BioengineeringDalian University of TechnologyDalianLiaoningPR China
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Deng Y, Wang X, Xu H, Liu C, Li R, Zhang Y, Qu C, Miao J. Optimization of κ-Selenocarrageenase Production by Pseudoalteromonas sp. Xi13 and Its Immobilization. Molecules 2022; 27:molecules27227716. [PMID: 36431814 PMCID: PMC9694495 DOI: 10.3390/molecules27227716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/31/2022] [Accepted: 10/31/2022] [Indexed: 11/12/2022] Open
Abstract
The bioenzymatic production of selenium oligosaccharides addresses the problems resulting from high molecular weight and poor water solubility of κ-selenocarrageenan, and lays foundation for its application as adjuvant drugs for cancer treatment and food additive. κ-selenocarrageenase extracted from Pseudoalteromonas sp. Xi13 can degrade κ-selenocarrageenan to selenium oligosaccharides. The maximum optimized κ-selenocarrageenase activity using Response Surface Methodology (RSM) was increased by 1.4 times, reaching 8.416 U/mL. To expand applications of the κ-selenocarrageenase in industry, the preparation conditions of it in either lyophilized or immobilized form were investigated. The activity recovery rate of the lyophilized enzyme was >70%, while that of the immobilized enzyme was 62.83%. However, the immobilized κ-selenocarrageenase exhibits good stability after being reused four times, with 58.28% of residual activity. The selenium content of κ-selenocarrageenan oligosaccharides degraded by the immobilized κ-selenocarrageenase was 47.06 µg/g, 8.3% higher than that degraded by the lyophilized enzyme. The results indicate that the immobilized κ-selenocarrageenase is suitable for industrial applications and has commercial potential.
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Affiliation(s)
- Yashan Deng
- Department of Pharmaceutical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Xixi Wang
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Hui Xu
- Department of Pharmaceutical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Cui Liu
- Department of Pharmaceutical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Ran Li
- Department of Pharmaceutical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Yuanyuan Zhang
- Department of Pharmaceutical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
- State Key Laboratory Base for Eco-Chemical Engineering in College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
- Correspondence: (J.M.); (Y.Z.); Tel.: +86-532-88967430 (J.M.); +86-532-13153275509 (Y.Z.)
| | - Changfeng Qu
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
- Marine Natural Products R&D Laboratory, Qingdao Key Laboratory, Qingdao 266061, China
| | - Jinlai Miao
- Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
- Marine Natural Products R&D Laboratory, Qingdao Key Laboratory, Qingdao 266061, China
- Correspondence: (J.M.); (Y.Z.); Tel.: +86-532-88967430 (J.M.); +86-532-13153275509 (Y.Z.)
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9
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Lu Z, Jiang H, Hamouda HI, Wang T, Dong Y, Mao X. Biochemical Characterization of a Cold-Adapted λ-Carrageenase OUC-CglA from Maribacter vaceletii: An Efficient Tool for λ-Carrageenan Degradation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:12135-12142. [PMID: 36112087 DOI: 10.1021/acs.jafc.2c05544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
λ-Carrageenase with high activity is an effective and environmentally friendly tool enzyme for the preparation of λ-carrageenan oligosaccharides with various biological activities. Herein, a novel GH150 (glycoside hydrolases family 150) λ-carrageenase OUC-CglA from Maribacter vaceletii was heterologously expressed, purified, and characterized. The recombinant OUC-CglA performs strict selectivity toward λ-carrageenan with a specific activity of 418.7 U/mg under its optimal reaction conditions of 20 °C and pH 7.0. Additionally, OUC-CglA is a typical cold-adapted λ-carrageenase because it unfolds 90% and 63% of its maximum activity at 15 and 10 °C, respectively. The hydrolysis process suggests that OUC-CglA is an endotype λ-carrageenase with the final products consisting of λ-neocarrabiose, λ-neocarratetraose, λ-neocarrahexaose, and other long-chain λ-neocarrageenan oligosaccharides. As a result, high activity, cold-adaptation, and principal products of OUC-CglA make it a potential biocatalyst for the effective preparation of λ-carrageenan oligosaccharides.
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Affiliation(s)
- Zewei Lu
- College of Food Science and Engineering, Ocean University of China, Qingdao266003, China
| | - Hong Jiang
- College of Food Science and Engineering, Ocean University of China, Qingdao266003, China
- Sanya Ocean Institute, Ocean University of China, Sanya572024, China
| | - Hamed I Hamouda
- College of Food Science and Engineering, Ocean University of China, Qingdao266003, China
- Processes Design and Development Department, Egyptian Petroleum Research Institute, Cairo11727, Egypt
| | - Tao Wang
- Sanya Ocean Institute, Ocean University of China, Sanya572024, China
| | - Yueyang Dong
- College of Food Science and Engineering, Ocean University of China, Qingdao266003, China
| | - Xiangzhao Mao
- College of Food Science and Engineering, Ocean University of China, Qingdao266003, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao266237, China
- Sanya Ocean Institute, Ocean University of China, Sanya572024, China
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10
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Zhao D, Pu Z, Su Q, Zhang Y, Sun W, Bao Y. Self-assembled κ-carrageenase-inorganic hybrid nanoflowers exerting high catalytic efficiency with stable and recyclable properties. Enzyme Microb Technol 2021; 153:109957. [PMID: 34847438 DOI: 10.1016/j.enzmictec.2021.109957] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 10/18/2021] [Accepted: 11/21/2021] [Indexed: 01/14/2023]
Abstract
κ-Carrageenan oligosaccharides from κ-carrageenan hydrolysis are important biochemicals with more bioactivity. Enzyme engineering plays a key role in improving κ-carrageenase catalytic efficiency for production of κ-carrageenan oligosaccharides. Effect of metal ions on enzyme activity, especially stability and efficiency, is main factor in catalytic process, but metal ions addition leads to gelation of κ-carrageenan solution. In this study, molecular dynamics simulation was used to explore the interaction between κ-carrageenase CgkPZ and Ca2+, and Ca2+ bonded to D164 and E167 in the catalytic center resulting in the catalytic efficiency increase. Circular dichroism analysis indicated that the secondary structure of κ-carrageenase could change in the presence of Ca2+. Therefore, a novel self-assembly κ-carrageenase-inorganic hybrid nanoflowers CaNF@CgkPZ was synthesized and systematically characterized. The catalytic efficiency (kcat/Km) of CaNF@CgkPZ was 382.1 mL·mg-1·s-1, increased by 292% compared with free κ-carrageenase. Notably, the enzyme activity of CaNF@CgkPZ was not reduced significantly after 19 cycles use, and 70-100% relative activity was still retained when stored at 4-25 ℃ for 15 days. This work provides an efficient approach for κ-carrageenase immobilization with good storage stability, reusability and enhanced catalytic efficiency, which is of great significance in practical applications.
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Affiliation(s)
- Dongying Zhao
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China; Ningbo institute, Dalian University of Technology, Ningbo 315016, China
| | - Zhongji Pu
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310058, China
| | - Qiao Su
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China.
| | - Yue Zhang
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Wenhui Sun
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China
| | - Yongming Bao
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China; Ningbo institute, Dalian University of Technology, Ningbo 315016, China; School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China.
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11
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Module function analysis of a full-length κ-carrageenase from Pseudoalteromonas sp. ZDY3. Int J Biol Macromol 2021; 182:1473-1483. [PMID: 34019922 DOI: 10.1016/j.ijbiomac.2021.05.110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 04/23/2021] [Accepted: 05/16/2021] [Indexed: 11/20/2022]
Abstract
κ-Carrageenan oligosaccharides with many excellent biological properties could be produced by κ-carrageenases selectively. In this study, based on the encoding gene of full length κ-carrageenase obtained from Pseudoalteromonas sp. ZDY3 and the reported mature secreted κ-carrageenase composed of 275 amino acid residues (N26-T300), CgkPZ_GH16 was expressed in E. coli, but no soluble active protein could be detected. Fortunately, the signal peptide of wild-type κ-carrageenase was recognized, and cleaved in the soluble and folding form in E. coli, the Km and kcat values of CgkPZ_SP_GH16 was 1.007 mg/mL and 362.8 s-1. By molecular dynamics simulations, it was showed that YjdB domain might affect the activity of κ-carrageenase. Due to the absence of mature processing modification system in E. coli, YjdB was remained in recombinant full length κ-carrageenase, and the lost catalytic efficiency of CgkPZ was compensated by expression level and thermal stability. Interestingly, CgkPZ_GH16_YjdB was expressed soluble without the signal peptide, which indicated that YjdB could contribute to the expression and folding of κ-carrageenase. These results provide new insight into the effects of different modules of κ-carrageenase on the expression and properties of enzyme.
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