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Rahman AT, Ohyama Y, Tsuda S, Kondo H. Evaluation of Ice Recrystallization Inhibition of Ice-Binding Proteins by Monitoring Specific Ice Crystals. Methods Mol Biol 2024; 2730:93-100. [PMID: 37943452 DOI: 10.1007/978-1-0716-3503-2_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Ice recrystallization is a phenomenon in which large ice crystals are formed at the expense of smaller ones. The resultant large ice crystals degrade the quality of frozen foods and cryopreserved biomaterials. To minimize freeze damage by controlling the ice recrystallization process, various compounds have been developed, including biological antifreezes, synthetic peptides, glycopeptides, polymers, and small molecules. To compare their efficiency, evaluation methods of ice recrystallization inhibition are important. This chapter describes a practical protocol to quantify the inhibition efficiency by observing specific ice crystals exhibiting uniform growth.
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Affiliation(s)
- Anika T Rahman
- Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Yasushi Ohyama
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Japan
| | - Sakae Tsuda
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Japan
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan
- OPERANDO Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Hidemasa Kondo
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Japan.
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan.
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2
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Yang Y, Yamauchi A, Tsuda S, Kuramochi M, Mio K, Sasaki YC, Arai T. The ice-binding site of antifreeze protein irreversibly binds to cell surface for its hypothermic protective function. Biochem Biophys Res Commun 2023; 682:343-348. [PMID: 37837755 DOI: 10.1016/j.bbrc.2023.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 10/03/2023] [Indexed: 10/16/2023]
Abstract
Antifreeze proteins (AFPs) are multifunctional polypeptides that adsorb onto ice crystals to inhibit their growth and onto cells to protect them from nonfreezing hypothermic damage. However, the mechanism by which AFP exerts its hypothermic cell protective (HCP) function remains uncertain. Here, we assessed the HCP function of three types of fish-derived AFPs (type I, II, and III AFPs) against human T-lymphoblastic lymphoma by measuring the survival rate (%) of the cells after preservation at 4 °C for 24 h. All AFPs improved the survival rate in a concentration-dependent manner, although the HCP efficiency was inferior for type III AFP compared to other AFPs. In addition, after point mutations were introduced into the ice-binding site (IBS) of a type III AFP, HCP activity was dramatically increased, suggesting that the IBS of AFP is involved in cell adsorption. Significantly, high HCP activity was observed for a mutant that exhibited poorer antifreeze activity, indicating that AFP exerts HCP- and ice-binding functions through a different mechanism. We next incubated the cells in an AFP-containing solution, replaced it with pure EC solution, and then preserved the cells, showing that no significant reduction in the cell survival rate occurred for type I and II AFPs even after replacement. Thus, these AFPs irreversibly bind to the cells at 4 °C, and only tightly adsorbed AFP molecules contribute towards the cell-protection function.
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Affiliation(s)
- Yue Yang
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, 277-8561, Japan
| | - Akari Yamauchi
- Hibernation Metabolism, Physiology and Development Group, Institute of Low Temperature Science, Hokkaido University, Sapporo, 060-0819, Japan
| | - Sakae Tsuda
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, 277-8561, Japan; AIST-UTokyo Advanced Operando Measurement Technology Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology, Kashiwa, 277-0882, Japan
| | - Masahiro Kuramochi
- Graduate School of Science and Engineering, Ibaraki University, Hitachi, 316-8511, Japan
| | - Kazuhiro Mio
- AIST-UTokyo Advanced Operando Measurement Technology Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology, Kashiwa, 277-0882, Japan
| | - Yuji C Sasaki
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, 277-8561, Japan; AIST-UTokyo Advanced Operando Measurement Technology Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology, Kashiwa, 277-0882, Japan
| | - Tatsuya Arai
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, 277-8561, Japan; AIST-UTokyo Advanced Operando Measurement Technology Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology, Kashiwa, 277-0882, Japan.
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3
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Scholl CL, Davies PL. Protein engineering of antifreeze proteins reveals that their activity scales with the area of the ice-binding site. FEBS Lett 2023; 597:538-546. [PMID: 36460826 DOI: 10.1002/1873-3468.14552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/15/2022] [Accepted: 11/25/2022] [Indexed: 12/04/2022]
Abstract
Antifreeze proteins (AFPs) protect organisms from freezing by binding to ice crystals to prevent their growth. Here, we have investigated how the area of an AFP's ice-binding site (IBS) changes its antifreeze activity. The polyproline type II helical bundle fold of the 9.6-kDa springtail (Collembola) AFP from Granisotoma rainieri (a primitive arthropod) facilitates changes to both IBS length and width. A one quarter decrease in area reduced activity to less than 10%. A one quarter increase in IBS width, through the addition of a single helix, tripled antifreeze activity. However, increasing IBS length by a similar amount actually reduced activity. Expanding the IBS area can greatly increase antifreeze activity but needs to be evaluated by experimentation on a case-by-case basis.
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Affiliation(s)
- Connor L Scholl
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Canada
| | - Peter L Davies
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Canada
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4
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Arai T, Yamauchi A, Yang Y, Singh SM, Sasaki YC, Tsuda S. Adsorption of ice-binding proteins onto whole ice crystal surfaces does not necessarily confer a high thermal hysteresis activity. Sci Rep 2022; 12:15443. [PMID: 36104389 PMCID: PMC9474881 DOI: 10.1038/s41598-022-19803-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 09/05/2022] [Indexed: 11/25/2022] Open
Abstract
Many psychrophilic microorganisms synthesize ice-binding proteins (IBPs) to survive the cold. The functions of IBPs are evaluated by the effect of the proteins on the nonequilibrium water freezing-point depression, which is called “thermal hysteresis (TH)”, and the inhibitory effect of the proteins on the growth of larger ice crystals, which is called “ice recrystallization inhibition (IRI)”. To obtain mechanical insight into the two activities, we developed a modified method of ice affinity purification and extracted two new IBP isoforms from Psychromyces glacialis, an Arctic glacier fungus. One isoform was found to be an approximately 25 kDa protein (PsgIBP_S), while the other is a 28 kDa larger protein (PsgIBP_L) that forms an intermolecular dimer. Their TH activities were less than 1 °C at millimolar concentrations, implying that both isoforms are moderately active but not hyperactive IBP species. It further appeared that both isoforms exhibit high IRI activity even at submicromolar concentrations. Furthermore, the isoforms can bind to the whole surface of a hemispherical single ice crystal, although such ice-binding was generally observed for hyperactive IBP species. These results suggest that the binding ability of IBPs to whole ice crystal surfaces is deficient for hyperactivity but is crucial for significant IRI activity.
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5
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Ghalamara S, Silva S, Brazinha C, Pintado M. Structural diversity of marine anti-freezing proteins, properties and potential applications: a review. BIORESOUR BIOPROCESS 2022; 9:5. [PMID: 38647561 PMCID: PMC10992025 DOI: 10.1186/s40643-022-00494-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 01/08/2022] [Indexed: 11/10/2022] Open
Abstract
Cold-adapted organisms, such as fishes, insects, plants and bacteria produce a group of proteins known as antifreeze proteins (AFPs). The specific functions of AFPs, including thermal hysteresis (TH), ice recrystallization inhibition (IRI), dynamic ice shaping (DIS) and interaction with membranes, attracted significant interest for their incorporation into commercial products. AFPs represent their effects by lowering the water freezing point as well as preventing the growth of ice crystals and recrystallization during frozen storage. The potential of AFPs to modify ice growth results in ice crystal stabilizing over a defined temperature range and inhibiting ice recrystallization, which could minimize drip loss during thawing, improve the quality and increase the shelf-life of frozen products. Most cryopreservation studies using marine-derived AFPs have shown that the addition of AFPs can increase post-thaw viability. Nevertheless, the reduced availability of bulk proteins and the need of biotechnological techniques for industrial production, limit the possible usage in foods. Despite all these drawbacks, relatively small concentrations are enough to show activity, which suggests AFPs as potential food additives in the future. The present work aims to review the results of numerous investigations on marine-derived AFPs and discuss their structure, function, physicochemical properties, purification and potential applications.
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Affiliation(s)
- Soudabeh Ghalamara
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005, Porto, Portugal
| | - Sara Silva
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005, Porto, Portugal
| | - Carla Brazinha
- LAQV/Requimte, Faculdade de Ciências E Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516, Caparica, Portugal
| | - Manuela Pintado
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005, Porto, Portugal.
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6
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Baskaran A, Kaari M, Venugopal G, Manikkam R, Joseph J, Bhaskar PV. Anti freeze proteins (Afp): Properties, sources and applications - A review. Int J Biol Macromol 2021; 189:292-305. [PMID: 34419548 DOI: 10.1016/j.ijbiomac.2021.08.105] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/11/2021] [Accepted: 08/12/2021] [Indexed: 11/17/2022]
Abstract
Extreme cold marine and freshwater temperatures (below 4 °C) induce massive deterioration to the cell membranes of organisms resulting in the formation of ice crystals, consequently causing organelle damage or cell death. One of the adaptive mechanisms organisms have evolved to thrive in cold environments is the production of antifreeze proteins with the functional capabilities to withstand frigid temperatures. Antifreeze proteins are extensively identified in different cold-tolerant species and they facilitate the persistence of cold-adapted organisms by decreasing the freezing point of their body fluids. Various structurally diverse types of antifreeze proteins detected possess the ability to modify ice crystal growth by thermal hysteresis and ice recrystallization inhibition. The unique properties of antifreeze proteins have made them a promising resource in industry, biomedicine, food storage and cryobiology. This review collates the findings of the various studies carried out in the past and the recent developments observed in the properties, functional mechanisms, classification, distinct sources and the ever-increasing applications of antifreeze proteins. This review also summarizes the possibilities of the way forward to identify new avenues of research on anti-freeze proteins.
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Affiliation(s)
- Abirami Baskaran
- Centre for Drug Discovery and Development, Sathyabama Institute of Science and Technology, Chennai 600 119, Tamil Nadu, India
| | - Manigundan Kaari
- Centre for Drug Discovery and Development, Sathyabama Institute of Science and Technology, Chennai 600 119, Tamil Nadu, India
| | - Gopikrishnan Venugopal
- Centre for Drug Discovery and Development, Sathyabama Institute of Science and Technology, Chennai 600 119, Tamil Nadu, India
| | - Radhakrishnan Manikkam
- Centre for Drug Discovery and Development, Sathyabama Institute of Science and Technology, Chennai 600 119, Tamil Nadu, India.
| | - Jerrine Joseph
- Centre for Drug Discovery and Development, Sathyabama Institute of Science and Technology, Chennai 600 119, Tamil Nadu, India
| | - Parli V Bhaskar
- National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Vasco-da-Gama 403804, Goa, India
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7
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Arai T, Inamasu R, Yamaguchi H, Sasaki D, Sato-Tomita A, Sekiguchi H, Mio K, Tsuda S, Kuramochi M, Sasaki YC. Laboratory diffracted x-ray blinking to monitor picometer motions of protein molecules and application to crystalline materials. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2021; 8:044302. [PMID: 34258327 PMCID: PMC8270646 DOI: 10.1063/4.0000112] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 05/28/2021] [Indexed: 06/13/2023]
Abstract
In recent years, real-time observations of molecules have been required to understand their behavior and function. To date, we have reported two different time-resolved observation methods: diffracted x-ray tracking and diffracted x-ray blinking (DXB). The former monitors the motion of diffracted spots derived from nanocrystals labeled onto target molecules, and the latter measures the fluctuation of the diffraction intensity that is highly correlated with the target molecular motion. However, these reports use a synchrotron x-ray source because of its high average flux, resulting in a high time resolution. Here, we used a laboratory x-ray source and DXB to measure the internal molecular dynamics of three different systems. The samples studied were bovine serum albumin (BSA) pinned onto a substrate, antifreeze protein (AFP) crystallized as a single crystal, and poly{2-(perfluorooctyl)ethyl acrylate} (PC8FA) polymer between polyimide sheets. It was found that not only BSA but also AFP and PC8FA molecules move in the systems. In addition, the molecular motion of AFP molecules was observed to increase with decreasing temperature. The rotational diffusion coefficients (DR) of BSA, AFP, and PC8FA were estimated to be 0.73 pm2/s, 0.65 pm2/s, and 3.29 pm2/s, respectively. Surprisingly, the DR of the PC8FA polymer was found to be the highest among the three samples. This is the first report that measures the molecular motion of a single protein crystal and polymer by using DXB with a laboratory x-ray source. This technique can be applied to any kind of crystal and crystalline polymer and provides atomic-order molecular information.
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Affiliation(s)
- Tatsuya Arai
- Authors to whom correspondence should be addressed:; ; and
| | - Rena Inamasu
- Technology and Innovation Center, Daikin Industries, Ltd., 1-1 Nishi Hitotsuya, Settsu-shi, Osaka 566-8585, Japan
| | - Hiroki Yamaguchi
- Technology and Innovation Center, Daikin Industries, Ltd., 1-1 Nishi Hitotsuya, Settsu-shi, Osaka 566-8585, Japan
| | - Daisuke Sasaki
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan
| | - Ayana Sato-Tomita
- Division of Biophysics, Department of Physiology, Jichi Medical University, Shimotsuke, Tochigi 329-0498, Japan
| | - Hiroshi Sekiguchi
- Center for Synchrotron Radiation Research, Japan Synchrotron Radiation Research Institute, 1-1-1, Kouto, Sayo cho, Sayo gun, Hyogo 679-5198, Japan
| | - Kazuhiro Mio
- AIST-UTokyo Advanced Operando Measurement Technology Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology, Kashiwa 277-0882, Japan
| | | | | | - Yuji C. Sasaki
- Authors to whom correspondence should be addressed:; ; and
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8
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Miyawaki O. Freezing and Ice Structure in Food. J JPN SOC FOOD SCI 2021. [DOI: 10.3136/nskkk.68.255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Osato Miyawaki
- Ishikawa Prefectural University
- Resaech Laboratory for Water Science and Technology
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9
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Gruneberg AK, Graham LA, Eves R, Agrawal P, Oleschuk RD, Davies PL. Ice recrystallization inhibition activity varies with ice-binding protein type and does not correlate with thermal hysteresis. Cryobiology 2021; 99:28-39. [PMID: 33529683 DOI: 10.1016/j.cryobiol.2021.01.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 01/07/2021] [Accepted: 01/23/2021] [Indexed: 01/06/2023]
Abstract
Ice-binding proteins (IBPs) inhibit the growth of ice through surface adsorption. In some freeze-resistant fishes and insects, circulating IBPs serve as antifreeze proteins to stop ice growth by lowering the freezing point. Plants are less able to avoid freezing and some use IBPs to minimize the damage caused in the frozen state by ice recrystallization, which is the growth of large ice grains at the expense of small ones. Here we have accurately and reproducibly measured the ice recrystallization inhibition (IRI) activity of over a dozen naturally occurring IBPs from fishes, insects, plants, and microorganisms using a modified 'splat' method on serial dilutions of IBPs whose concentrations were determined by amino acid analysis. The endpoint of IRI, which was scored as the lowest protein concentration at which no recrystallization was observed, varied for the different IBPs over two orders of magnitude from 1000 nM to 5 nM. Moreover, there was no apparent correlation between their IRI levels and reported antifreeze activities. IBPs from insects and fishes had similar IRI activity, even though the insect IBPs are typically 10x more active in freezing point depression. Plant IBPs had weak antifreeze activity but were more effective at IRI. Bacterial IBPs involved in ice adhesion showed both strong freezing point depression and IRI. Two trends did emerge, including that basal plane binding IBPs correlated with stronger IRI activity and larger IBPs had higher IRI activity.
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Affiliation(s)
- Audrey K Gruneberg
- Department of Biomedical and Molecular Sciences, Queen's University. 18 Stuart Street, Kingston, Ontario, K7L3N6, Canada
| | - Laurie A Graham
- Department of Biomedical and Molecular Sciences, Queen's University. 18 Stuart Street, Kingston, Ontario, K7L3N6, Canada
| | - Robert Eves
- Department of Biomedical and Molecular Sciences, Queen's University. 18 Stuart Street, Kingston, Ontario, K7L3N6, Canada
| | - Prashant Agrawal
- Department of Chemistry, Queen's University. 90 Bader Lane, Kingston, Ontario, K7L2S8, Canada
| | - Richard D Oleschuk
- Department of Chemistry, Queen's University. 90 Bader Lane, Kingston, Ontario, K7L2S8, Canada
| | - Peter L Davies
- Department of Biomedical and Molecular Sciences, Queen's University. 18 Stuart Street, Kingston, Ontario, K7L3N6, Canada.
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10
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Choi SR, Lee J, Seo YJ, Kong HS, Kim M, Jin E, Lee JR, Lee JH. Molecular basis of ice-binding and cryopreservation activities of type III antifreeze proteins. Comput Struct Biotechnol J 2021; 19:897-909. [PMID: 33598104 PMCID: PMC7851773 DOI: 10.1016/j.csbj.2021.01.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 01/08/2023] Open
Abstract
The QAE2ACT and SP ACT mutants showed full TH and IRI activities. Active AFPs effectively preserved intact follicle and prevented DSB damage. Active AFPs exhibited unique structural feature in the first 310 helix of the IBS. Unique structure of the IBS determines TH, IRI, and cryopreservation activities.
Antifreeze proteins (AFPs) can inhibit the freezing of body fluid at subzero temperatures to promote the survival of various organisms living in polar regions. Type III AFPs are categorized into three subgroups, QAE1, QAE2, and SP isoforms, based on differences in their isoelectric points. We determined the thermal hysteresis (TH), ice recrystallization inhibition (IRI), and cryopreservation activity of three isoforms of the notched-fin eelpout AFP and their mutant constructs and characterized their structural and dynamic features using NMR. The QAE1 isoform is the most active among the three classes of III AFP isoforms, and the mutants of inactive QAE2 and SP isoforms, QAE2ACT and SPACT, displayed the full TH and IRI activities with resepect to QAE1 isoform. Cryopreservation studies using mouse ovarian tissue revealed that the QAE1 isoform and the active mutants, QAE2ACT and SPACT, more effectively preserved intact follicle morphology and prevented DNA double-strand break damage more efficiently than the inactive isoforms. It was also found that all active AFPs, QAE1, QAE2ACT, and SPACT, formed unique H-bonds with the first 310 helix, an interaction that plays an important role in the formation of anchored clathrate water networks for efficient binding to the primary prism and pyramidal planes of ice crystals, which was disrupted in the inactive isoforms. Our studies provide valuable insights into the molecular mechanism of the TH and IRI activity, as well as the cryopreservation efficiency, of type III AFPs.
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Key Words
- AFP, Antifreeze protein
- Antifreeze protein
- CPA, cryoprotective agent
- Cryopreservation
- D-PBS, Dulbecco’s phosphate-buffered saline
- DMSO, dimethyl sulfoxide
- DSB, double-strand break
- EG, ethylene glycol
- H-bond, hydrogen bond
- IBP, ice-binding protein
- IBS, ice-binding surface
- IRI, ice recrystallization inhibition
- Ice crystallization inhibition
- NMR
- OT, ovarian tissue
- QAE, quaternary-amino-ethyl
- RT, room temperature
- SP, sulfopropyl
- TH, thermal hysteresis
- TUNEL, terminal deoxynucleotidyl transferase dUTP nick end labelling
- Thermal hysteresis
- nfeAFP, notched-fin eelpout AFP
- wt, wild-type
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Affiliation(s)
- Seo-Ree Choi
- Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University, Gyeongnam 52828, Republic of Korea
| | - Jaewang Lee
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Gyeonggi 13620, Republic of Korea.,Department of Biomedical Laboratory Science, Eulji University, Gyeonggi 13135, Republic of Korea
| | - Yeo-Jin Seo
- Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University, Gyeongnam 52828, Republic of Korea
| | - Hyun Sun Kong
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Gyeonggi 13620, Republic of Korea
| | - Minjae Kim
- Department of Life Science, Hanyang University, Seoul 04763, Republic of Korea
| | - EonSeon Jin
- Department of Life Science, Hanyang University, Seoul 04763, Republic of Korea
| | - Jung Ryeol Lee
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Gyeonggi 13620, Republic of Korea.,Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Joon-Hwa Lee
- Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University, Gyeongnam 52828, Republic of Korea
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11
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Hobbs RS, Hall JR, Graham LA, Davies PL, Fletcher GL. Antifreeze protein dispersion in eelpouts and related fishes reveals migration and climate alteration within the last 20 Ma. PLoS One 2020; 15:e0243273. [PMID: 33320906 PMCID: PMC7737890 DOI: 10.1371/journal.pone.0243273] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 11/18/2020] [Indexed: 12/31/2022] Open
Abstract
Antifreeze proteins inhibit ice growth and are crucial for the survival of supercooled fish living in icy seawater. Of the four antifreeze protein types found in fishes, the globular type III from eelpouts is the one restricted to a single infraorder (Zoarcales), which is the only clade know to have antifreeze protein-producing species at both poles. Our analysis of over 60 unique antifreeze protein gene sequences from several Zoarcales species indicates this gene family arose around 18 Ma ago, in the Northern Hemisphere, supporting recent data suggesting that the Arctic Seas were ice-laden earlier than originally thought. The Antarctic was subject to widespread glaciation over 30 Ma and the Notothenioid fishes that produce an unrelated antifreeze glycoprotein extensively exploited the adjoining seas. We show that species from one Zoarcales family only encroached on this niche in the last few Ma, entering an environment already dominated by ice-resistant fishes, long after the onset of glaciation. As eelpouts are one of the dominant benthic fish groups of the deep ocean, they likely migrated from the north to Antarctica via the cold depths, losing all but the fully active isoform gene along the way. In contrast, northern species have retained both the fully active (QAE) and partially active (SP) isoforms for at least 15 Ma, which suggests that the combination of isoforms is functionally advantageous.
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Affiliation(s)
- Rod S. Hobbs
- Department of Ocean Sciences, Memorial University of Newfoundland, St John’s, Newfoundland, Canada
| | - Jennifer R. Hall
- Aquatic Research Cluster, CREAIT Network, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada
| | - Laurie A. Graham
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, Ontario, Canada
- * E-mail:
| | - Peter L. Davies
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, Ontario, Canada
| | - Garth L. Fletcher
- Department of Ocean Sciences, Memorial University of Newfoundland, St John’s, Newfoundland, Canada
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12
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Tsuda S, Yamauchi A, Khan NMMU, Arai T, Mahatabuddin S, Miura A, Kondo H. Fish-Derived Antifreeze Proteins and Antifreeze Glycoprotein Exhibit a Different Ice-Binding Property with Increasing Concentration. Biomolecules 2020; 10:biom10030423. [PMID: 32182859 PMCID: PMC7175324 DOI: 10.3390/biom10030423] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/06/2020] [Accepted: 03/06/2020] [Indexed: 01/01/2023] Open
Abstract
The concentration of a protein is highly related to its biochemical properties, and is a key determinant for its biotechnological applications. Antifreeze proteins (AFPs) and antifreeze glycoproteins (AFGPs) are structurally diverse macromolecules that are capable of binding to embryonic ice crystals below 0 °C, making them useful as protectants of ice-block formation. In this study, we examined the maximal solubility of native AFP I–III and AFGP with distilled water, and evaluated concentration dependence of their ice-binding property. Approximately 400 mg/mL (AFP I), 200 mg/mL (AFP II), 100 mg/mL (AFP III), and >1800 mg/mL (AFGP) of the maximal solubility were estimated, and among them AFGP’s solubility is much higher compared with that of ordinary proteins, such as serum albumin (~500 mg/mL). The samples also exhibited unexpectedly high thermal hysteresis values (2–3 °C) at 50–200 mg/mL. Furthermore, the analysis of fluorescence-based ice plane affinity showed that AFP II binds to multiple ice planes in a concentration-dependent manner, for which an oligomerization mechanism was hypothesized. The difference of concentration dependence between AFPs and AFGPs may provide a new clue to help us understand the ice-binding function of these proteins.
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Affiliation(s)
- Sakae Tsuda
- Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan; (A.Y.); (N.M.-M.U.K.); (T.A.); (H.K.)
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan;
- OPERANDO Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8563, Japan
- Correspondence: ; Tel.: +81-11-857-8912
| | - Akari Yamauchi
- Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan; (A.Y.); (N.M.-M.U.K.); (T.A.); (H.K.)
| | - N. M.-Mofiz Uddin Khan
- Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan; (A.Y.); (N.M.-M.U.K.); (T.A.); (H.K.)
| | - Tatsuya Arai
- Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan; (A.Y.); (N.M.-M.U.K.); (T.A.); (H.K.)
| | - Sheikh Mahatabuddin
- Department of Nutrition and Food Engineering, Daffodil International University, Dhanmondi, Dhaka 1207, Bangladesh;
| | - Ai Miura
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan;
| | - Hidemasa Kondo
- Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan; (A.Y.); (N.M.-M.U.K.); (T.A.); (H.K.)
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan;
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13
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Graham LA, Boddington ME, Holmstrup M, Davies PL. Antifreeze protein complements cryoprotective dehydration in the freeze-avoiding springtail Megaphorura arctica. Sci Rep 2020; 10:3047. [PMID: 32080305 PMCID: PMC7033094 DOI: 10.1038/s41598-020-60060-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 01/31/2020] [Indexed: 12/03/2022] Open
Abstract
The springtail, Megaphorura arctica, is freeze-avoiding and survives sub-zero temperatures by cryoprotective dehydration. At the onset of dehydration there is some supercooling of body fluids, and the danger of inoculative freezing, which would be lethal. To see if the springtails are protected by antifreeze proteins in this pre-equilibrium phase, we examined extracts from cold-acclimated M. arctica and recorded over 3 °C of freezing point depression. Proteins responsible for this antifreeze activity were isolated by ice affinity. They comprise isoforms ranging from 6.5 to 16.9 kDa, with an amino acid composition dominated by glycine (>35 mol%). Tryptic peptide sequences were used to identify the mRNA sequence coding for the smallest isoform. This antifreeze protein sequence has high similarity to one characterized in Hypogastrura harveyi, from a different springtail order. If these two antifreeze proteins are true homologs, we suggest their origin dates back to the Permian glaciations some 300 million years ago.
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Affiliation(s)
- Laurie A Graham
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada
| | - Marie E Boddington
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada
| | - Martin Holmstrup
- Section of Terrestrial Ecology, Department of Bioscience, Aarhus University, Vejlsøvej 25, 8600, Silkeborg, Denmark
- Arctic Research Center, Aarhus University, Ny Munkegade 114, 8000, Aarhus C, Denmark
| | - Peter L Davies
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada.
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14
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Berger T, Meister K, DeVries AL, Eves R, Davies PL, Drori R. Synergy between Antifreeze Proteins Is Driven by Complementary Ice-Binding. J Am Chem Soc 2019; 141:19144-19150. [DOI: 10.1021/jacs.9b10905] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Tehilla Berger
- Department of Chemistry and Biochemistry, Yeshiva University, New York, New York 10016, United States
| | - Konrad Meister
- Max-Planck Institute for Polymer Research, Mainz D-55128, Germany
| | - Arthur L. DeVries
- Department of Animal Biology, University of Illinois, Urbana, Illinois 61801, United States
| | - Robert Eves
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Peter L. Davies
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Ran Drori
- Department of Chemistry and Biochemistry, Yeshiva University, New York, New York 10016, United States
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15
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Aohara T, Furukawa J, Miura K, Tsuda S, Poisson JS, Ben RN, Wilson PW, Satoh S. Presence of a basic secretory protein in xylem sap and shoots of poplar in winter and its physicochemical activities against winter environmental conditions. JOURNAL OF PLANT RESEARCH 2019; 132:655-665. [PMID: 31289959 DOI: 10.1007/s10265-019-01123-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 07/05/2019] [Indexed: 06/09/2023]
Abstract
XSP25, previously shown to be the most abundant hydrophilic protein in xylem sap of Populus nigra in winter, belongs to a secretory protein family in which the arrangement of basic and acidic amino acids is conserved between dicotyledonous and monocotyledonous species. Its gene expression was observed at the same level in roots and shoots under long-day conditions, but highly induced under short-day conditions and at low temperatures in roots, especially in endodermis and xylem parenchyma in the root hair region of Populus trichocarpa, and its protein level was high in dormant buds, but not in roots or branches. Addition of recombinant PtXSP25 protein mitigated the denaturation of lactate dehydrogenase by drying, but showed only a slight effect on that caused by freeze-thaw cycling. Recombinant PtXSP25 protein also showed ice recrystallization inhibition activity to reduce the size of ice crystals, but had no antifreezing activity. We suggest that PtXSP25 protein produced in shoots and/or in roots under short-day conditions and at non-freezing low temperatures followed by translocation via xylem sap to shoot apoplast may protect the integrity of the plasma membrane and cell wall functions from freezing and drying damage in winter environmental conditions.
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Affiliation(s)
- Tsutomu Aohara
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
| | - Jun Furukawa
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
| | - Kenji Miura
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
| | - Sakae Tsuda
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohira, Sapporo, 062-8517, Japan
| | - Jessica S Poisson
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, D'Iorio Hall, 10 Marie Curie, Ottawa, ON, K1N 6N5, Canada
| | - Robert N Ben
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, D'Iorio Hall, 10 Marie Curie, Ottawa, ON, K1N 6N5, Canada
| | - Peter W Wilson
- School of Environment, Science and Engineering, Southern Cross University, Lismore, NSW, 2480, Australia
| | - Shinobu Satoh
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan.
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16
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Kuramochi M, Takanashi C, Yamauchi A, Doi M, Mio K, Tsuda S, Sasaki YC. Expression of Ice-Binding Proteins in Caenorhabditis elegans Improves the Survival Rate upon Cold Shock and during Freezing. Sci Rep 2019; 9:6246. [PMID: 31092839 PMCID: PMC6520345 DOI: 10.1038/s41598-019-42650-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 04/04/2019] [Indexed: 01/01/2023] Open
Abstract
Ice-binding proteins (IBPs) are capable of binding ice crystals and inhibiting their growth at freezing temperatures. IBPs are also thought to stabilize the cell membrane at non-freezing temperatures near 0 °C. These two effects have been assumed to reduce cold- and freezing-induced damage to cells and tissues. However, knowledge regarding the effects of IBP on the living animals is limited. Here, we characterized the relationship between the IBP effects and the physiological role by using the nematode Caenorhabditis elegans. The expression of fish (NfeIBPs)- and fungus-derived IBPs (AnpIBPs and TisIBP8) in C. elegans improved its survival rate during exposure to 0 and −2 °C (cold shock) and −5 °C (freezing). The observed cold tolerance of C. elegans after cold shock is attributable to the stabilization of cell-membrane lipids with IBPs, and the freezing tolerance at −5 °C can be attributed to the inhibition of ice-crystal growth by the IBPs. Significantly, the survival rate of C. elegans at −5 °C was improved by expression of wild-type AnpIBP and maximized by that of TisIBP8, whereas it was lowered when a defective AnpIBP mutant was expressed. These results suggest that the ice-binding ability of IBP has a good correlation with the survival rate of C. elegans during freezing.
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Affiliation(s)
- Masahiro Kuramochi
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, 277-8561, Japan. .,AIST-UTokyo Advanced Operando-Measurement Technology Open Innovation Laboratory (OPERANDO-OIL), National Institute of Advanced Industrial Science and Technology (AIST), Kashiwa, 277-8565, Japan. .,Molecular Neurobiology Research Group and DAI-LAB, Biomedical Research Institute, National Institute of Advance Industrial Science and Technology (AIST), Tsukuba, 305-8566, Japan.
| | - Chiaki Takanashi
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, 277-8561, Japan.,AIST-UTokyo Advanced Operando-Measurement Technology Open Innovation Laboratory (OPERANDO-OIL), National Institute of Advanced Industrial Science and Technology (AIST), Kashiwa, 277-8565, Japan
| | - Akari Yamauchi
- Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan.,Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, 062-8517, Japan
| | - Motomichi Doi
- Molecular Neurobiology Research Group and DAI-LAB, Biomedical Research Institute, National Institute of Advance Industrial Science and Technology (AIST), Tsukuba, 305-8566, Japan
| | - Kazuhiro Mio
- AIST-UTokyo Advanced Operando-Measurement Technology Open Innovation Laboratory (OPERANDO-OIL), National Institute of Advanced Industrial Science and Technology (AIST), Kashiwa, 277-8565, Japan
| | - Sakae Tsuda
- AIST-UTokyo Advanced Operando-Measurement Technology Open Innovation Laboratory (OPERANDO-OIL), National Institute of Advanced Industrial Science and Technology (AIST), Kashiwa, 277-8565, Japan. .,Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan. .,Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, 062-8517, Japan.
| | - Yuji C Sasaki
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, 277-8561, Japan. .,AIST-UTokyo Advanced Operando-Measurement Technology Open Innovation Laboratory (OPERANDO-OIL), National Institute of Advanced Industrial Science and Technology (AIST), Kashiwa, 277-8565, Japan.
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17
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Yamazaki A, Nishimiya Y, Tsuda S, Togashi K, Munehara H. Freeze Tolerance in Sculpins (Pisces; Cottoidea) Inhabiting North Pacific and Arctic Oceans: Antifreeze Activity and Gene Sequences of the Antifreeze Protein. Biomolecules 2019; 9:biom9040139. [PMID: 30959891 PMCID: PMC6523315 DOI: 10.3390/biom9040139] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/28/2019] [Accepted: 04/03/2019] [Indexed: 11/16/2022] Open
Abstract
Many marine species inhabiting icy seawater produce antifreeze proteins (AFPs) to prevent their body fluids from freezing. The sculpin species of the superfamily Cottoidea are widely found from the Arctic to southern hemisphere, some of which are known to express AFP. Here we clarified DNA sequence encoding type I AFP for 3 species of 2 families (Cottidae and Agonidae) belonging to Cottoidea. We also examined antifreeze activity for 3 families and 32 species of Cottoidea (Cottidae, Agonidae, and Rhamphocottidae). These fishes were collected in 2013–2015 from the Arctic Ocean, Alaska, Japan. We could identify 8 distinct DNA sequences exhibiting a high similarity to those reported for Myoxocephalus species, suggesting that Cottidae and Agonidae share the same DNA sequence encoding type I AFP. Among the 3 families, Rhamphocottidae that experience a warm current did not show antifreeze activity. The species inhabiting the Arctic Ocean and Northern Japan that often covered with ice floe showed high activity, while those inhabiting Alaska, Southern Japan with a warm current showed low/no activity. These results suggest that Cottoidea acquires type I AFP gene before dividing into Cottidae and Agonidae, and have adapted to each location with optimal antifreeze activity level.
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Affiliation(s)
- Aya Yamazaki
- Nanae Fresh-Water Station, Field Science Center for Northern Biosphere, Hokkaido University, Nanae Town Kameda-gun 041-1105, Japan.
| | - Yoshiyuki Nishimiya
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology, Sapporo 062-8517, Japan.
| | - Sakae Tsuda
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology, Sapporo 062-8517, Japan.
| | - Koji Togashi
- Graduate School of Environmental Sciences, Hokkaido University, Sapporo 060-0810, Japan.
| | - Hiroyuki Munehara
- Usujiri Fisheries Station, Field Science Center of Northern Biosphere, Hokkaido University, Hakodate 041-1613, Japan.
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18
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Ice recrystallization is strongly inhibited when antifreeze proteins bind to multiple ice planes. Sci Rep 2019; 9:2212. [PMID: 30760774 PMCID: PMC6374469 DOI: 10.1038/s41598-018-36546-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 11/23/2018] [Indexed: 02/07/2023] Open
Abstract
Ice recrystallization is a phenomenon observed as the increase in ice crystal size within an already frozen material. Antifreeze proteins (AFPs), a class of proteins capable of arresting ice crystal growth, are known to inhibit this phenomenon even at sub milli-molar concentrations. A tremendous range in the possible applications of AFPs is hence expected in both medical and industrial fields, while a key determinant of the ice recrystallization inhibition (IRI) is hardly understood. Here, IRI efficiency and ice plane affinity were examined for the wild-type AFPI–III, a defective AFPIII isoform, and a fungal AFP isoform. To simplify the IRI analysis using the formal representation of Ostwald-ripening (r3 = r03 + kt), we monitored specific ice grains exhibiting only uniform growth, for which maximum Feret diameter was measured. The cube of an ice grain’s radius (r3) increased proportionately with time (t), and its slope gave the recrystallization rate (k). There was a significant difference in the IRI efficiency between the samples, and the fungal AFP possessing the activity with the smallest amount (0.27 μM) exhibited an affinity to multiple ice planes. These results suggest that the IRI efficiency is maximized when AFPs bind to a whole set of ice planes.
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19
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Polypentagonal ice-like water networks emerge solely in an activity-improved variant of ice-binding protein. Proc Natl Acad Sci U S A 2018; 115:5456-5461. [PMID: 29735675 PMCID: PMC6003529 DOI: 10.1073/pnas.1800635115] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Polypentagonal water networks were recently observed in a protein capable of binding to ice crystals, or ice-binding protein (IBP). To examine such water networks and clarify their role in ice-binding, we determined X-ray crystal structures of a 65-residue defective isoform of a Zoarcidae-derived IBP (wild type, WT) and its five single mutants (A20L, A20G, A20T, A20V, and A20I). Polypentagonal water networks composed of ∼50 semiclathrate waters were observed solely on the strongest A20I mutant, which appeared to include a tetrahedral water cluster exhibiting a perfect position match to the [Formula: see text] first prism plane of a single ice crystal. Inclusion of another symmetrical water cluster in the polypentagonal network showed a perfect complementarity to the waters constructing the [Formula: see text] pyramidal ice plane. The order of ice-binding strength was A20L < A20G < WT < A20T < A20V < A20I, where the top three mutants capable of binding to the first prism and the pyramidal ice planes commonly contained a bifurcated γ-CH3 group. These results suggest that a fine-tuning of the surface of Zoarcidae-derived IBP assisted by a side-chain group regulates the holding property of its polypentagonal water network, the function of which is to freeze the host protein to specific ice planes.
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20
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Mahatabuddin S, Tsuda S. Applications of Antifreeze Proteins: Practical Use of the Quality Products from Japanese Fishes. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1081:321-337. [PMID: 30288717 DOI: 10.1007/978-981-13-1244-1_17] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Numerous embryonic ice crystals are generated in water at the moment of freezing. These crystals grow and merge together to form an ice block that can be generally observed. Antifreeze protein (AFP) is capable of binding to the embryonic ice crystals, inhibiting such an ice block formation. Fish-derived AFP additionally binds to membrane lipid bilayers to prolong the lifetime of cells. These unique abilities of AFP have been studied extensively for the development of advanced techniques, such as ice recrystallization inhibitors, freeze-tolerant gels, cell preservation fluids, and high-porosity ceramics, for which mass-preparation method of the quality product of AFP utilizing fish muscle homogenates made a significant contribution. In this chapter, we present both fundamental and advanced information of fish AFPs that have been especially discovered from mid-latitude sea area, which will provide a hint to develop more advanced techniques applicable in both medical and industrial fields.
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Affiliation(s)
- Sheikh Mahatabuddin
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Japan
| | - Sakae Tsuda
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Japan.
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21
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Mahatabuddin S, Hanada Y, Nishimiya Y, Miura A, Kondo H, Davies PL, Tsuda S. Concentration-dependent oligomerization of an alpha-helical antifreeze polypeptide makes it hyperactive. Sci Rep 2017; 7:42501. [PMID: 28211917 PMCID: PMC5304152 DOI: 10.1038/srep42501] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 01/13/2017] [Indexed: 11/09/2022] Open
Abstract
A supersoluble 40-residue type I antifreeze protein (AFP) was discovered in a righteye flounder, the barfin plaice (bp). Unlike all other AFPs characterized to date, bpAFP transitions from moderately-active to hyperactive with increasing concentration. At sub-mM concentrations, bpAFP bound to pyramidal planes of ice to shape it into a bi-pyramidal hexagonal trapezohedron, similarly to the other moderately-active AFPs. At mM concentrations, bpAFP uniquely underwent further binding to the whole ice crystal surface including the basal planes. The latter caused a bursting ice crystal growth normal to c-axis, 3 °C of high thermal hysteresis, and alteration of an ice crystal into a smaller lemon-shaped morphology, all of which are well-known properties of hyperactive AFPs. Analytical ultracentrifugation showed this activity transition is associated with oligomerization to form tetramer, which might be the forerunner of a naturally occurring four-helix-bundle AFP in other flounders.
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Affiliation(s)
- Sheikh Mahatabuddin
- Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Yuichi Hanada
- Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Yoshiyuki Nishimiya
- Bioproduction Research Institute, ioproduction Research Institute and OPERANDO Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan
| | - Ai Miura
- Bioproduction Research Institute, ioproduction Research Institute and OPERANDO Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan
| | - Hidemasa Kondo
- Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan
- Bioproduction Research Institute, ioproduction Research Institute and OPERANDO Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan
| | - Peter L. Davies
- Protein Function Discovery Group and Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON, K7L 3N6, Canada
| | - Sakae Tsuda
- Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan
- Bioproduction Research Institute, ioproduction Research Institute and OPERANDO Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan
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22
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Kim HJ, Lee JH, Hur YB, Lee CW, Park SH, Koo BW. Marine Antifreeze Proteins: Structure, Function, and Application to Cryopreservation as a Potential Cryoprotectant. Mar Drugs 2017; 15:md15020027. [PMID: 28134801 PMCID: PMC5334608 DOI: 10.3390/md15020027] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 01/20/2017] [Indexed: 11/16/2022] Open
Abstract
Antifreeze proteins (AFPs) are biological antifreezes with unique properties, including thermal hysteresis(TH),ice recrystallization inhibition(IRI),and interaction with membranes and/or membrane proteins. These properties have been utilized in the preservation of biological samples at low temperatures. Here, we review the structure and function of marine-derived AFPs, including moderately active fish AFPs and hyperactive polar AFPs. We also survey previous and current reports of cryopreservation using AFPs. Cryopreserved biological samples are relatively diverse ranging from diatoms and reproductive cells to embryos and organs. Cryopreserved biological samples mainly originate from mammals. Most cryopreservation trials using marine-derived AFPs have demonstrated that addition of AFPs can improve post-thaw viability regardless of freezing method (slow-freezing or vitrification), storage temperature, and types of biological sample type.
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Affiliation(s)
- Hak Jun Kim
- Department of Chemistry, Pukyong National University, Busan 48513, Korea.
| | - Jun Hyuck Lee
- Unit of Polar Genomics, Korea Polar Research Institute, Incheon 21990, Korea.
| | - Young Baek Hur
- Tidal Flat Research Institute, National Fisheries Research and Development Institute, Gunsan, Jeonbuk 54014, Korea.
| | - Chang Woo Lee
- Unit of Polar Genomics, Korea Polar Research Institute, Incheon 21990, Korea.
| | - Sun-Ha Park
- Unit of Polar Genomics, Korea Polar Research Institute, Incheon 21990, Korea.
| | - Bon-Won Koo
- Department of Chemistry, Pukyong National University, Busan 48513, Korea.
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23
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Bredow M, Vanderbeld B, Walker VK. Ice-binding proteins confer freezing tolerance in transgenic Arabidopsis thaliana. PLANT BIOTECHNOLOGY JOURNAL 2017; 15:68-81. [PMID: 27317906 PMCID: PMC5253476 DOI: 10.1111/pbi.12592] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 05/30/2016] [Accepted: 06/10/2016] [Indexed: 05/07/2023]
Abstract
Lolium perenne is a freeze-tolerant perennial ryegrass capable of withstanding temperatures below -13 °C. Ice-binding proteins (IBPs) presumably help prevent damage associated with freezing by restricting the growth of ice crystals in the apoplast. We have investigated the expression, localization and in planta freezing protection capabilities of two L. perenne IBP isoforms, LpIRI2 and LpIRI3, as well as a processed IBP (LpAFP). One of these isoforms, LpIRI2, lacks a conventional signal peptide and was assumed to be a pseudogene. Nevertheless, both LpIRI2 and LpIRI3 transcripts were up-regulated following cold acclimation. LpIRI2 also demonstrated ice-binding activity when produced recombinantly in Escherichia coli. Both the LpIRI3 and LpIRI2 isoforms appeared to accumulate in the apoplast of transgenic Arabidopsis thaliana plants. In contrast, the fully processed isoform, LpAFP, remained intracellular. Transgenic plants expressing either LpIRI2 or LpIRI3 showed reduced ion leakage (12%-39%) after low-temperature treatments, and significantly improved freezing survival, while transgenic LpAFP-expressing lines did not confer substantial subzero protection. Freeze protection was further enhanced by with the introduction of more than one IBP isoform; ion leakage was reduced 26%-35% and 10% of plants survived temperatures as low as -8 °C. Our results demonstrate that apoplastic expression of multiple L. perenne IBP isoforms shows promise for providing protection to crops susceptible to freeze-induced damage.
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Affiliation(s)
| | | | - Virginia K. Walker
- Department of BiologyQueen's UniversityKingstonONCanada
- Department of Biomedical and Molecular Sciences and School of Environmental StudiesQueen's UniversityKingstonONCanada
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24
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Bredow M, Vanderbeld B, Walker VK. Knockdown of Ice-Binding Proteins in Brachypodium distachyon Demonstrates Their Role in Freeze Protection. PLoS One 2016; 11:e0167941. [PMID: 27959937 PMCID: PMC5154533 DOI: 10.1371/journal.pone.0167941] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 11/22/2016] [Indexed: 11/18/2022] Open
Abstract
Sub-zero temperatures pose a major threat to the survival of cold-climate perennials. Some of these freeze-tolerant plants produce ice-binding proteins (IBPs) that offer frost protection by restricting ice crystal growth and preventing expansion-induced lysis of the plasma membranes. Despite the extensive in vitro characterization of such proteins, the importance of IBPs in the freezing stress response has not been investigated. Using the freeze-tolerant grass and model crop, Brachypodium distachyon, we characterized putative IBPs (BdIRIs) and generated the first 'IBP-knockdowns'. Seven IBP sequences were identified and expressed in Escherichia coli, with all of the recombinant proteins demonstrating moderate to high levels of ice-recrystallization inhibition (IRI) activity, low levels of thermal hysteresis (TH) activity (0.03-0.09°C at 1 mg/mL) and apparent adsorption to ice primary prism planes. Following plant cold acclimation, IBPs purified from wild-type B. distachyon cell lysates similarly showed high levels of IRI activity, hexagonal ice-shaping, and low levels of TH activity (0.15°C at 0.5 mg/mL total protein). The transfer of a microRNA construct to wild-type plants resulted in the attenuation of IBP activity. The resulting knockdown mutant plants had reduced ability to restrict ice-crystal growth and a 63% reduction in TH activity. Additionally, all transgenic lines were significantly more vulnerable to electrolyte leakage after freezing to -10°C, showing a 13-22% increase in released ions compared to wild-type. IBP-knockdown lines also demonstrated a significant decrease in viability following freezing to -8°C, with some lines showing only two-thirds the survival seen in control lines. These results underscore the vital role IBPs play in the development of a freeze-tolerant phenotype and suggests that expression of these proteins in frost-susceptible plants could be valuable for the production of more winter-hardy crops.
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Affiliation(s)
- Melissa Bredow
- Department of Biology, Queen’s University, Kingston, ON, Canada
| | | | - Virginia K. Walker
- Department of Biology, Queen’s University, Kingston, ON, Canada
- Department of Biomedical and Molecular Sciences, and School of Environmental Studies, Queen’s University, Kingston, ON, Canada
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25
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Hydrophobic ice-binding sites confer hyperactivity of an antifreeze protein from a snow mold fungus. Biochem J 2016; 473:4011-4026. [DOI: 10.1042/bcj20160543] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 09/09/2016] [Indexed: 11/17/2022]
Abstract
Snow mold fungus, Typhula ishikariensis, secretes seven antifreeze protein isoforms (denoted TisAFPs) that assist in the survival of the mold under snow cover. Here, the X-ray crystal structure of a hyperactive isoform, TisAFP8, at 1.0 Å resolution is presented. TisAFP8 folds into a right-handed β-helix accompanied with a long α-helix insertion. TisAFP8 exhibited significantly high antifreeze activity that is comparable with other hyperactive AFPs, despite its close structural and sequence similarity with the moderately active isoform TisAFP6. A series of mutations introduced into the putative ice-binding sites (IBSs) in the β-sheet and adjacent loop region reduced antifreeze activity. A double-mutant A20T/A212S, which comprises a hydrophobic patch between the β-sheet and loop region, caused the greatest depression of antifreeze activity of 75%, when compared with that of the wild-type protein. This shows that the loop region is involved in ice binding and hydrophobic residues play crucial functional roles. Additionally, bound waters around the β-sheet and loop region IBSs were organized into an ice-like network and can be divided into two groups that appear to mediate separately TisAFP and ice. The docking model of TisAFP8 with the basal plane via its loop region IBS reveals a better shape complementarity than that of TisAFP6. In conclusion, we present new insights into the ice-binding mechanism of TisAFP8 by showing that a higher hydrophobicity and better shape complementarity of its IBSs, especially the loop region, may render TisAFP8 hyperactive to ice binding.
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Choi SR, Seo YJ, Kim M, Eo Y, Ahn HC, Lee AR, Park CJ, Ryu KS, Cheong HK, Lee SS, Jin E, Lee JH. NMR study of the antifreeze activities of active and inactive isoforms of a type III antifreeze protein. FEBS Lett 2016; 590:4202-4212. [PMID: 27718246 DOI: 10.1002/1873-3468.12451] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 09/23/2016] [Accepted: 09/30/2016] [Indexed: 11/06/2022]
Abstract
The quaternary-amino-ethyl 1 (QAE1) isoforms of type III antifreeze proteins (AFPs) prevent the growth of ice crystals within organisms living in polar regions. We determined the antifreeze activity of wild-type and mutant constructs of the Japanese notched-fin eelpout (Zoarces elongates Kner) AFP8 (nfeAFP8) and characterized the structural and dynamics properties of their ice-binding surface using NMR. We found that the three constructs containing the V20G mutation were incapable of stopping the growth of ice crystals and exhibited structural changes, as well as increased conformational flexibility, in the first 310 helix (residues 18-22) of the sequence. Our results suggest that the inactive nfeAFP8s are incapable of anchoring water molecules due to the unusual and flexible backbone conformation of their primary prism plane-binding surface.
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Affiliation(s)
- Seo-Ree Choi
- Department of Chemistry and RINS, Gyeongsang National University, Gyeongnam, Korea
| | - Yeo-Jin Seo
- Department of Chemistry and RINS, Gyeongsang National University, Gyeongnam, Korea
| | - Minjae Kim
- Department of Life Science, Hanyang University, Seoul, Korea
| | - Yumi Eo
- College of Pharmacy, Dongguk University, Gyeonggi, Korea
| | - Hee-Chul Ahn
- College of Pharmacy, Dongguk University, Gyeonggi, Korea
| | - Ae-Ree Lee
- Department of Chemistry and RINS, Gyeongsang National University, Gyeongnam, Korea
| | | | | | | | - Shim Sung Lee
- Department of Chemistry and RINS, Gyeongsang National University, Gyeongnam, Korea
| | - EonSeon Jin
- Department of Life Science, Hanyang University, Seoul, Korea
| | - Joon-Hwa Lee
- Department of Chemistry and RINS, Gyeongsang National University, Gyeongnam, Korea.,Division of Magnetic Resonance, KBSI, Chungbuk, Korea
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Affiliation(s)
- Maya Bar Dolev
- Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith Faculty of Agricultural, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; ,
| | - Ido Braslavsky
- Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith Faculty of Agricultural, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; ,
| | - Peter L. Davies
- Department of Biomedical and Molecular Science, Queen's University, Kingston, Ontario K7L 3N6, Canada;
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Sun T, Gauthier SY, Campbell RL, Davies PL. Revealing Surface Waters on an Antifreeze Protein by Fusion Protein Crystallography Combined with Molecular Dynamic Simulations. J Phys Chem B 2015; 119:12808-15. [PMID: 26371748 DOI: 10.1021/acs.jpcb.5b06474] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Antifreeze proteins (AFPs) adsorb to ice through an extensive, flat, relatively hydrophobic surface. It has been suggested that this ice-binding site (IBS) organizes surface waters into an ice-like clathrate arrangement that matches and fuses to the quasi-liquid layer on the ice surface. On cooling, these waters join the ice lattice and freeze the AFP to its ligand. Evidence for the generality of this binding mechanism is limited because AFPs tend to crystallize with their IBS as a preferred protein-protein contact surface, which displaces some bound waters. Type III AFP is a 7 kDa globular protein with an IBS made up two adjacent surfaces. In the crystal structure of the most active isoform (QAE1), the part of the IBS that docks to the primary prism plane of ice is partially exposed to solvent and has clathrate waters present that match this plane of ice. The adjacent IBS, which matches the pyramidal plane of ice, is involved in protein-protein crystal contacts with few surface waters. Here we have changed the protein-protein contacts in the ice-binding region by crystallizing a fusion of QAE1 to maltose-binding protein. In this 1.9 Å structure, the IBS that fits the pyramidal plane of ice is exposed to solvent. By combining crystallography data with MD simulations, the surface waters on both sides of the IBS were revealed and match well with the target ice planes. The waters on the pyramidal plane IBS were loosely constrained, which might explain why other isoforms of type III AFP that lack the prism plane IBS are less active than QAE1. The AFP fusion crystallization method can potentially be used to force the exposure to solvent of the IBS on other AFPs to reveal the locations of key surface waters.
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Affiliation(s)
- Tianjun Sun
- Department of Biomedical and Molecular Sciences, Queen's University , Kingston, Ontario, Canada
| | - Sherry Y Gauthier
- Department of Biomedical and Molecular Sciences, Queen's University , Kingston, Ontario, Canada
| | - Robert L Campbell
- Department of Biomedical and Molecular Sciences, Queen's University , Kingston, Ontario, Canada
| | - Peter L Davies
- Department of Biomedical and Molecular Sciences, Queen's University , Kingston, Ontario, Canada
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Duman JG. Animal ice-binding (antifreeze) proteins and glycolipids: an overview with emphasis on physiological function. J Exp Biol 2015; 218:1846-55. [DOI: 10.1242/jeb.116905] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
ABSTRACT
Ice-binding proteins (IBPs) assist in subzero tolerance of multiple cold-tolerant organisms: animals, plants, fungi, bacteria etc. IBPs include: (1) antifreeze proteins (AFPs) with high thermal hysteresis antifreeze activity; (2) low thermal hysteresis IBPs; and (3) ice-nucleating proteins (INPs). Several structurally different IBPs have evolved, even within related taxa. Proteins that produce thermal hysteresis inhibit freezing by a non-colligative mechanism, whereby they adsorb onto ice crystals or ice-nucleating surfaces and prevent further growth. This lowers the so-called hysteretic freezing point below the normal equilibrium freezing/melting point, producing a difference between the two, termed thermal hysteresis. True AFPs with high thermal hysteresis are found in freeze-avoiding animals (those that must prevent freezing, as they die if frozen) especially marine fish, insects and other terrestrial arthropods where they function to prevent freezing at temperatures below those commonly experienced by the organism. Low thermal hysteresis IBPs are found in freeze-tolerant organisms (those able to survive extracellular freezing), and function to inhibit recrystallization – a potentially damaging process whereby larger ice crystals grow at the expense of smaller ones – and in some cases, prevent lethal propagation of extracellular ice into the cytoplasm. Ice-nucleator proteins inhibit supercooling and induce freezing in the extracellular fluid at high subzero temperatures in many freeze-tolerant species, thereby allowing them to control the location and temperature of ice nucleation, and the rate of ice growth. Numerous nuances to these functions have evolved. Antifreeze glycolipids with significant thermal hysteresis activity were recently identified in insects, frogs and plants.
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Choi YG, Park CJ, Kim HE, Seo YJ, Lee AR, Choi SR, Lee SS, Lee JH. Comparison of backbone dynamics of the type III antifreeze protein and antifreeze-like domain of human sialic acid synthase. JOURNAL OF BIOMOLECULAR NMR 2015; 61:137-150. [PMID: 25575834 DOI: 10.1007/s10858-014-9895-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Accepted: 12/30/2014] [Indexed: 06/04/2023]
Abstract
Antifreeze proteins (AFPs) are found in a variety of cold-adapted (psychrophilic) organisms to promote survival at subzero temperatures by binding to ice crystals and decreasing the freezing temperature of body fluids. The type III AFPs are small globular proteins that consist of one α-helix, three 3(10)-helices, and two β-strands. Sialic acids play important roles in a variety of biological functions, such as development, recognition, and cell adhesion and are synthesized by conserved enzymatic pathways that include sialic acid synthase (SAS). SAS consists of an N-terminal catalytic domain and a C-terminal antifreeze-like (AFL) domain, which is similar to the type III AFPs. Despite having very similar structures, AFL and the type III AFPs exhibit very different temperature-dependent stability and activity. In this study, we have performed backbone dynamics analyses of a type III AFP (HPLC12 isoform) and the AFL domain of human SAS (hAFL) at various temperatures. We also characterized the structural/dynamic properties of the ice-binding surfaces by analyzing the temperature gradient of the amide proton chemical shift and its correlation with chemical shift deviation from random coil. The dynamic properties of the two proteins were very different from each other. While HPLC12 was mostly rigid with a few residues exhibiting slow motions, hAFL showed fast internal motions at low temperature. Our results provide insight into the molecular basis of thermostability and structural flexibility in homologous psychrophilic HPLC12 and mesophilic hAFL proteins.
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Affiliation(s)
- Yong-Geun Choi
- Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University, Jinju, Gyeongnam, 660-701, Republic of Korea
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Ideta A, Aoyagi Y, Tsuchiya K, Nakamura Y, Hayama K, Shirasawa A, Sakaguchi K, Tominaga N, Nishimiya Y, Tsuda S. Prolonging hypothermic storage (4 C) of bovine embryos with fish antifreeze protein. J Reprod Dev 2014; 61:1-6. [PMID: 25311466 PMCID: PMC4354224 DOI: 10.1262/jrd.2014-073] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Embryos obtained via superovulation are necessary for mammalian artificial reproduction, and viability is a key determinant of success. Nonfreezing storage at 4 C is possible, but currently used storage solutions can maintain embryo viability for only 24-48 h. Here we found that 10 mg/ml antifreeze protein (AFP) dissolved in culture medium 199 with 20% (v/v) fetal bovine serum and 25 mM HEPES could keep bovine embryos alive for 10 days at 4 C. We used a recombinant AFP isolated from the notched-fin eelpout (Zoarces elongatus Kner). Photomicroscopy indicated that the AFP-embryo interaction was enhanced at 37 C. Embryos pre-warmed with the AFP solution at 37 C for 60 min maintained high viability, whereas those that were not pre-warmed could live no longer than 7 days. Thus, short-term storage of bovine embryos was achieved by a combination of AFP-containing medium and controlled pre-warming.
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Affiliation(s)
- Atsushi Ideta
- Research and Development Group, Zen-noh Embryo Transfer (ET) Center, Hokkaido 080-1407, Japan
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Wilkens C, Poulsen JCN, Ramløv H, Lo Leggio L. Purification, crystal structure determination and functional characterization of type III antifreeze proteins from the European eelpout Zoarces viviparus. Cryobiology 2014; 69:163-8. [PMID: 25025819 DOI: 10.1016/j.cryobiol.2014.07.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 06/28/2014] [Accepted: 07/01/2014] [Indexed: 10/25/2022]
Abstract
Antifreeze proteins (AFPs) are essential components of many organisms adaptation to cold temperatures. Fish type III AFPs are divided into two groups, SP isoforms being much less active than QAE1 isoforms. Two type III AFPs from Zoarces viviparus, a QAE1 (ZvAFP13) and an SP (ZvAFP6) isoform, are here characterized and their crystal structures determined. We conclude that the higher activity of the QAE1 isoforms cannot be attributed to single residues, but rather a combination of structural effects. Furthermore both ZvAFP6 and ZvAFP13 crystal structures have water molecules around T18 equivalent to the tetrahedral-like waters previously identified in a neutron crystal structure. Interestingly, ZvAFP6 forms dimers in the crystal, with a significant dimer interface. The presence of ZvAFP6 dimers was confirmed in solution by native electrophoresis and gel filtration. To our knowledge this is the first report of dimerization of AFP type III proteins.
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Affiliation(s)
- Casper Wilkens
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark.
| | - Jens-Christian N Poulsen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark.
| | - Hans Ramløv
- Department of Science, Systems and Models, Universitetsvej 1, Roskilde University, DK-4000 Roskilde, Denmark.
| | - Leila Lo Leggio
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark.
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33
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Hanada Y, Nishimiya Y, Miura A, Tsuda S, Kondo H. Hyperactive antifreeze protein from an Antarctic sea ice bacterium Colwellia sp. has a compound ice-binding site without repetitive sequences. FEBS J 2014; 281:3576-90. [PMID: 24938370 DOI: 10.1111/febs.12878] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 05/22/2014] [Accepted: 06/13/2014] [Indexed: 11/29/2022]
Abstract
UNLABELLED Antifreeze proteins (AFPs) are structurally diverse macromolecules that bind to ice crystals and inhibit their growth to protect the organism from injuries caused by freezing. An AFP identified from the Antarctic bacterium Colwellia sp. strain SLW05 (ColAFP) is homologous to AFPs from a wide variety of psychrophilic microorganisms. To understand the antifreeze function of ColAFP, we have characterized its antifreeze activity and determined the crystal structure of this protein. The recombinant ColAFP exhibited thermal hysteresis activity of approximately 4 °C at a concentration of 0.14 mm, and induced rapid growth of ice crystals in the hexagonal direction. Fluorescence-based ice plane affinity analysis showed that ColAFP binds to multiple planes of ice, including the basal plane. These observations show that ColAFP is a hyperactive AFP. The crystal structure of ColAFP determined at 1.6 Å resolution revealed an irregular β-helical structure, similar to known homologs. Mutational and molecular docking studies showed that ColAFP binds to ice through a compound ice-binding site (IBS) located at a flat surface of the β-helix and the adjoining loop region. The IBS of ColAFP lacks the repetitive sequences that are characteristic of hyperactive AFPs. These results suggest that ColAFP exerts antifreeze activity through a compound IBS that differs from the characteristic IBSs shared by other hyperactive AFPs. This study demonstrates a novel method for protection from freezing by AFPs in psychrophilic microorganisms. DATABASE Structural data for ColAFP have been submitted to the Protein Data Bank (PDB) under accession number 3WP9.
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Affiliation(s)
- Yuichi Hanada
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan; Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology, Sapporo, Japan
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34
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Kamijima T, Sakashita M, Miura A, Nishimiya Y, Tsuda S. Antifreeze protein prolongs the life-time of insulinoma cells during hypothermic preservation. PLoS One 2013; 8:e73643. [PMID: 24069217 PMCID: PMC3775740 DOI: 10.1371/journal.pone.0073643] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Accepted: 07/19/2013] [Indexed: 11/18/2022] Open
Abstract
It is sometimes desirable to preserve mammalian cells by hypothermia rather than freezing during short term transplantation. Here we found an ability of hypothermic (+4°C) preservation of fish antifreeze protein (AFP) against rat insulinoma cells denoted as RIN-5F. The preservation ability was compared between type I-III AFPs and antifreeze glycoprotein (AFGP), which could be recently mass-prepared by a developed technique utilizing the muscle homogenates, but not the blood serum, of cold-adapted fishes. For AFGP, whose molecular weight is distributed in the range from 2.6 to 34 kDa, only the proteins less than 10 kDa were examined. The viability rate was evaluated by counting of the preserved RIN-5F cells unstained with trypan blue. Significantly, either AFPI or AFPIII dissolved into Euro-Collins (EC) solution at a concentration of 10 mg/ml could preserve approximately 60% of the cells for 5 days at +4°C. The 5-day preserved RIN-5F cells retained the ability to secrete insulin. Only 2% of the cells were, however, preserved for 5 days without AFP. Confocal photomicroscopy experiments further showed the significant binding ability of AFP to the cell surface. These results suggest that fish AFP enables 5-day quality storage of the insulinoma cells collected from a donor without freezing.
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Affiliation(s)
- Tatsuro Kamijima
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Hokkaido, Japan
| | - Mami Sakashita
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Hokkaido, Japan
| | - Ai Miura
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Hokkaido, Japan
| | - Yoshiyuki Nishimiya
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Hokkaido, Japan
| | - Sakae Tsuda
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Hokkaido, Japan
- Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido, Japan
- * E-mail:
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Kumeta H, Ogura K, Nishimiya Y, Miura A, Inagaki F, Tsuda S. NMR structure note: a defective isoform and its activity-improved variant of a type III antifreeze protein from Zoarces elongates Kner. JOURNAL OF BIOMOLECULAR NMR 2013; 55:225-230. [PMID: 23288342 DOI: 10.1007/s10858-012-9703-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Accepted: 12/26/2012] [Indexed: 06/01/2023]
Affiliation(s)
- Hiroyuki Kumeta
- Faculty of Advanced Life Science, Department of Structural Biology, Hokkaido University, Kita21 Nishi11, Kita-ku, Sapporo, 001-0021, Japan
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36
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Haridas V, Naik S. Natural macromolecular antifreeze agents to synthetic antifreeze agents. RSC Adv 2013. [DOI: 10.1039/c3ra00081h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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37
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Garnham CP, Nishimiya Y, Tsuda S, Davies PL. Engineering a naturally inactive isoform of type III antifreeze protein into one that can stop the growth of ice. FEBS Lett 2012; 586:3876-81. [PMID: 23017208 DOI: 10.1016/j.febslet.2012.09.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2012] [Revised: 09/09/2012] [Accepted: 09/14/2012] [Indexed: 11/26/2022]
Abstract
Type III antifreeze proteins (AFPs) can be sub-divided into three classes of isoforms. SP and QAE2 isoforms can slow, but not stop, the growth of ice crystals by binding to pyramidal ice planes. The other class (QAE1) binds both pyramidal and primary prism planes and is able to halt the growth of ice. Here we describe the conversion of a QAE2 isoform into a fully-active QAE1-like isoform by changing four surface-exposed residues to develop a primary prism plane binding site. Molecular dynamics analyses suggest that the basis for gain in antifreeze activity is the formation of ice-like waters on the mutated protein surface.
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Affiliation(s)
- Christopher P Garnham
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
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38
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Desjardins M, Graham LA, Davies PL, Fletcher GL. Antifreeze protein gene amplification facilitated niche exploitation and speciation in wolffish. FEBS J 2012; 279:2215-30. [PMID: 22520964 DOI: 10.1111/j.1742-4658.2012.08605.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
During winter, the coastal waters of Newfoundland can be considered a 'freeze risk ecozone' for teleost fishes, where the shallower habitats pose a high (and the deeper habitats a low) risk of freezing. Atlantic (Anarhichas lupus) and spotted (Anarhichas minor) wolffish, which inhabit these waters, reside at opposite ends of this ecozone, with the Atlantic wolffish being the species facing the greatest risk, because of its shallower niche. In order to resist freezing, this species secretes five times the level of antifreeze protein (AFP) activity into the plasma than does the spotted wolffish. The main basis for this interspecific difference in AFP levels is gene dosage, as the Atlantic wolffish has approximately three times as many AFP gene copies as the spotted wolffish. In addition, AFP transcript levels in liver (the primary source of circulating AFPs) are several times higher in the Atlantic wolffish. One explanation for the difference in gene dosage and transcript levels is the presence of tandemly arrayed repeats in the latter, which make up two-thirds of its AFP gene pool. Such repeats are not present in the spotted wolffish. The available evidence indicates that the two species diverged from a common ancestor at a time when the ebb and flow of northern glaciations would have resulted in the emergence of shallow water 'freeze risk ecozones'. The results of this study suggest that the duplication/amplification of AFP genes in a subpopulation of ancestral wolffish would have facilitated the exploitation of this high-risk habitat, resulting in the divergence and evolution of modern-day Atlantic and spotted wolffish species.
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Affiliation(s)
- Mariève Desjardins
- Ocean Sciences Centre, Memorial University of Newfoundland, St John's, NL, Canada
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Garnham CP, Natarajan A, Middleton AJ, Kuiper MJ, Braslavsky I, Davies PL. Compound ice-binding site of an antifreeze protein revealed by mutagenesis and fluorescent tagging. Biochemistry 2010; 49:9063-71. [PMID: 20853841 DOI: 10.1021/bi100516e] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
By binding to the surface of ice crystals, type III antifreeze protein (AFP) can depress the freezing point of fish blood to below that of freezing seawater. This 7-kDa globular protein is encoded by a multigene family that produces two major isoforms, SP and QAE, which are 55% identical. Disruptive mutations on the ice-binding site of type III AFP lower antifreeze activity but can also change ice crystal morphology. By attaching green fluorescent protein to different mutants and isoforms and by examining the binding of these fusion proteins to single-crystal ice hemispheres, we show that type III AFP has a compound ice-binding site. There are two adjacent, flat, ice-binding surfaces at 150° to each other. One binds the primary prism plane of ice; the other, a pyramidal plane. Steric mutations on the latter surface cause elongation of the ice crystal as primary prism plane binding becomes dominant. SP isoforms naturally have a greatly reduced ability to bind the prism planes of ice. Mutations that make the SP isoforms more QAE-like slow down the rate of ice growth. On the basis of these observations we postulate that other types of AFP also have compound ice-binding sites that enable them to bind to multiple planes of ice.
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40
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Kelley JL, Aagaard JE, MacCoss MJ, Swanson WJ. Functional diversification and evolution of antifreeze proteins in the antarctic fish Lycodichthys dearborni. J Mol Evol 2010; 71:111-8. [PMID: 20686757 DOI: 10.1007/s00239-010-9367-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2010] [Accepted: 07/06/2010] [Indexed: 12/01/2022]
Abstract
Antifreeze proteins (AFPs) have independently evolved in many organisms. AFPs act by binding to ice crystals, effectively lowering the freezing point. AFPs are often at high copy number in a genome and diversity exists between copies. Type III antifreeze proteins are found in Arctic and Antarctic eel pouts, and have previously been shown to evolve under positive selection. Here we combine molecular and proteomic techniques to understand the molecular evolution and diversity of Type III antifreeze proteins in a single individual Antarctic fish Lycodichthys dearborni. Our expressed sequence tag (EST) screen reveals that at least seven different AFP variants are transcribed, which are ultimately translated into five different protein isoforms. The isoforms have identical 66 base pair signal sequences and different numbers of subsequent ice-binding domains followed by a stop codon. Isoforms with one ice-binding unit (monomer), two units (dimer), and multiple units (multimer) were present in the EST library. We identify a previously uncharacterized protein dimer, providing further evidence that there is diversity between Type III AFP isoforms, perhaps driven by positive selection for greater thermal hysteresis. Proteomic analysis confirms that several of these isoforms are translated and present in the liver. Our molecular evolution study shows that paralogs have diverged under positive selection. We hypothesize that antifreeze protein diversity is an important contributor to depressing the serum freezing point.
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Affiliation(s)
- Joanna L Kelley
- Department of Genome Sciences, University of Washington, Seattle, WA, USA.
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41
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Mok YF, Lin FH, Graham LA, Celik Y, Braslavsky I, Davies PL. Structural Basis for the Superior Activity of the Large Isoform of Snow Flea Antifreeze Protein. Biochemistry 2010; 49:2593-603. [DOI: 10.1021/bi901929n] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yee-Foong Mok
- Department of Biochemistry and Protein Function Discovery Group, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Feng-Hsu Lin
- Department of Biochemistry and Protein Function Discovery Group, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Laurie A. Graham
- Department of Biochemistry and Protein Function Discovery Group, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Yeliz Celik
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701
| | - Ido Braslavsky
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701
| | - Peter L. Davies
- Department of Biochemistry and Protein Function Discovery Group, Queen’s University, Kingston, Ontario K7L 3N6, Canada
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Takamichi M, Nishimiya Y, Miura A, Tsuda S. Fully active QAE isoform confers thermal hysteresis activity on a defective SP isoform of type III antifreeze protein. FEBS J 2009; 276:1471-9. [PMID: 19187223 DOI: 10.1111/j.1742-4658.2009.06887.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Type III antifreeze protein is naturally expressed as a mixture of sulfopropyl-Sephadex (SP) and quaternary aminoethyl-Sephadex (QAE)-binding isoforms, whose sequence identity is approximately 55%. We studied the ice-binding properties of a SP isoform (nfeAFP6) and the differences from those of a QAE isoform (nfeAFP8); both of these isoforms have been identified from the Japanese fish Zoarces elongatus Kner. The two isoforms possessed ice-shaping ability, such as the creation of an ice bipyramid, but nfeAFP6 was unable to halt crystal growth and exhibited no thermal hysteresis activity. For example, the ice growth rate for nfeAFP6 was 1000-fold higher than that for nfeAFP8 when measured for 0.1 mm protein solution at 0.25 degrees C below the melting point. Nevertheless, nfeAFP6 exhibited full thermal hysteresis activity in the presence of only 1% nfeAFP8 (i.e. [nfeAFP8]/[nfeAFP6] = 0.01), the effectiveness of which was indistinguishable from that of nfeAFP8 alone. We also observed a burst of ice crystal growth from the tip of the ice bipyramid for both isoforms on lowering the temperature. These results suggest that the ice growth inhibitory activity of an antifreeze protein isoform lacking the active component is restored by the addition of a minute amount of the active isoform.
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Affiliation(s)
- Manabu Takamichi
- Functional Protein Research Group, Research Institute of Genome-based Biofactory, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Japan
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Hirano Y, Nishimiya Y, Kowata K, Mizutani F, Tsuda S, Komatsu Y. Construction of Time-Lapse Scanning Electrochemical Microscopy with Temperature Control and Its Application To Evaluate the Preservation Effects of Antifreeze Proteins on Living Cells. Anal Chem 2008; 80:9349-54. [DOI: 10.1021/ac8018334] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Yu Hirano
- Research Institute of Genome-based Biofactory, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohira, Sapporo, Japan
| | - Yoshiyuki Nishimiya
- Research Institute of Genome-based Biofactory, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohira, Sapporo, Japan
| | - Keiko Kowata
- Research Institute of Genome-based Biofactory, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohira, Sapporo, Japan
| | - Fumio Mizutani
- Research Institute of Genome-based Biofactory, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohira, Sapporo, Japan
| | - Sakae Tsuda
- Research Institute of Genome-based Biofactory, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohira, Sapporo, Japan
| | - Yasuo Komatsu
- Research Institute of Genome-based Biofactory, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohira, Sapporo, Japan
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Funakoshi K, Inada T, Kawabata H, Tomita T. Cooperative Function of Ammonium Polyacrylate with Antifreeze Protein Type I. Biomacromolecules 2008; 9:3150-6. [DOI: 10.1021/bm800739s] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kunio Funakoshi
- National Institute of Advanced Industrial Science and Technology (AIST), 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan, and Fine and Specialty Chemicals Research Center, Nippon Shokubai Company, Ltd., 5-8 Nishi Otabi-cho, Suita, Osaka 564-8512, Japan
| | - Takaaki Inada
- National Institute of Advanced Industrial Science and Technology (AIST), 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan, and Fine and Specialty Chemicals Research Center, Nippon Shokubai Company, Ltd., 5-8 Nishi Otabi-cho, Suita, Osaka 564-8512, Japan
| | - Hiroshi Kawabata
- National Institute of Advanced Industrial Science and Technology (AIST), 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan, and Fine and Specialty Chemicals Research Center, Nippon Shokubai Company, Ltd., 5-8 Nishi Otabi-cho, Suita, Osaka 564-8512, Japan
| | - Takashi Tomita
- National Institute of Advanced Industrial Science and Technology (AIST), 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan, and Fine and Specialty Chemicals Research Center, Nippon Shokubai Company, Ltd., 5-8 Nishi Otabi-cho, Suita, Osaka 564-8512, Japan
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Hirano Y, Nishimiya Y, Matsumoto S, Matsushita M, Todo S, Miura A, Komatsu Y, Tsuda S. Hypothermic preservation effect on mammalian cells of type III antifreeze proteins from notched-fin eelpout. Cryobiology 2008; 57:46-51. [PMID: 18603237 DOI: 10.1016/j.cryobiol.2008.05.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2007] [Revised: 04/24/2008] [Accepted: 05/23/2008] [Indexed: 11/16/2022]
Abstract
Antifreeze proteins (AFPs) can bind to the surface of ice crystals and have also been suggested to protect cells from hypothermic damage. The present study reports that type III AFPs from notched-fin eelpout, Zoarces elongatus Kner, can protect cells during hypothermic storage. This fish naturally expresses at least 13 isoforms of type III AFP (denoted NfeAFPs), the primary sequences of which were categorized into SP- and QAE-Sephadex binding groups (SP- and QAE-isoforms). We compared the preservation ability between the extracted isoform mixtures (NfeAFPs) and a recombinant single SP-isoform (RcNfeAFP6). Experiments were performed using cultivated mammalian cells (HepG2) exposed to 4 degrees C for 24-72 h. The preserved cells were evaluated by measuring LDH released, intracellular ATP, and WST-8 reduction. It appeared that the protective effect of the 2 samples increases dose-dependently at concentrations between 2 and 10 mg/ml. Under highest soluble amount of the protein (approximately 10 mg/ml), cell viability significantly improved compared with the ordinary preservation fluid (P<0.01). This effect was larger with NfeAFPs than with RcNfeAFP6 at the same concentration. The successful hypothermic preservation of cells using natural NfeAFPs may have a wide range of applications for cell engineering and clinical medical care.
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Affiliation(s)
- Yu Hirano
- Research Institute of Genome Based Biofactory, National Institute of Advanced Industrial Science and Technology, 2-17-2-1 Tsukisamu-Higashi, Toyohira, Sapporo, Hokkaido 062-8517, Japan
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NISHIMIYA Y, MIE Y, HIRANO Y, KONDO H, MIURA A, TSUDA S. Mass preparation and technological development of an antifreeze protein. ACTA ACUST UNITED AC 2008. [DOI: 10.5571/syntheng.1.7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Takamichi M, Nishimiya Y, Miura A, Tsuda S. Effect of annealing time of an ice crystal on the activity of type III antifreeze protein. FEBS J 2007; 274:6469-76. [PMID: 18028424 DOI: 10.1111/j.1742-4658.2007.06164.x] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Antifreeze proteins (AFPs) possess a unique ability to bind to a seed ice crystal to inhibit its growth. The strength of this binding has been evaluated by thermal hysteresis (TH). In this study, we examined the dependence of TH on experimental parameters, including cooling rate, annealing time, annealing temperature and the size of the seed ice crystal for an isoform of type III AFP from notched-fin eelpout (nfeAFP8). TH of nfeAFP8 dramatically decreased when using a fast cooling rate (0.20 degrees C x min(-1)). It also decreased with increasing seed crystal size under a slow cooling rate (0.01 degrees C x min(-1)), but such dependence was not detected under the fast cooling rate. TH was enhanced 1.4- and 2.5-fold when ice crystals were annealed for 3 h at 0.05 and 0.25 degrees C below T(m), respectively. After annealing for 2 h at 0.25 degrees C below T(m), TH activity showed marked dependence on the size of ice crystals. These results suggest that annealing of an ice crystal for 2-3 h significantly increased the TH value of type III AFP. Based on a proposed adsorption-inhibition model, we assume that type III AFP undergoes additional ice binding to the convex ice front over a 2-3 h time scale, which results in the TH dependence on the annealing time.
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Affiliation(s)
- Manabu Takamichi
- Functional Protein Research Group, Research Institute of Genome-based Biofactory, National Institute of Advanced Industrial Science and Technology, Toyohira, Sapporo, Japan
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