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Zhu Q, Nicolardi S, Wang Y, Liu Y, Xu P, Wang J, Zhu D, Yu B. Expeditious chemical synthesis of xylomannans disproves the proposed antifreeze activities. Natl Sci Rev 2024; 11:nwae296. [PMID: 39315280 PMCID: PMC11418650 DOI: 10.1093/nsr/nwae296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 07/23/2024] [Accepted: 08/01/2024] [Indexed: 09/25/2024] Open
Abstract
Cold-adapted species are able to generate cryoprotective proteins and glycoproteins to prevent freezing damage. The [→4)-β-D-Manp-(1→4)-β-D-Xylp-(1→] n xylomannan from the Alaska beetle Upis ceramboides was disclosed by Walters and co-workers in 2009 as the first glycan-based antifreeze agent, which was later reported to be found in diverse taxa. Here, we report the rapid synthesis of four types of xylomannans, including the proposed antifreeze xylomannan up to a 64-mer (Type I), the regioisomeric [→3)-β-D-Manp-(1→4)-β-D-Xylp-(1→] n 16-mer (Type II), the diastereomeric [→4)-β-L-Manp-(1→4)-β-D-Xylp-(1→] n 16-mer (Type III) and the block-wise [→4)-β-D-Manp-(1→] m [→4)-β-D-Xylp-(1→] n 32-mer (Type IV), by employing a strategic iterative exponential glycan growth (IEGG) process. The nuclear magnetic resonance spectral data of the alleged natural xylomannan are in accordance only to those of the block-wise Type IV glycan and none of these synthetic xylomannans has been found to be capable of inducing thermal hysteresis. These results disprove the previous reports about the natural occurrence of antifreeze xylomannans.
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Affiliation(s)
- Qian Zhu
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Simone Nicolardi
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden 2333ZA, The Netherlands
| | - Yuanguang Wang
- Key Laboratory of Green Printing, Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yasong Liu
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Peng Xu
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Jianjun Wang
- Key Laboratory of Green Printing, Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Dapeng Zhu
- Institute of Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Biao Yu
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
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2
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Vicars Z, Choi J, Marks SM, Remsing RC, Patel AJ. Interfacial Ice Density Fluctuations Inform Surface Ice-Philicity. J Phys Chem B 2024; 128:8512-8521. [PMID: 39171456 DOI: 10.1021/acs.jpcb.4c03783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
The propensity of a surface to nucleate ice or bind to ice is governed by its ice-philicity─its relative preference for ice over liquid water. However, the relationship between the features of a surface and its ice-philicity is not well understood, and for surfaces with chemical or topographical heterogeneity, such as proteins, their ice-philicity is not even well-defined. In the analogous problem of surface hydrophobicity, it has been shown that hydrophobic surfaces display enhanced low water-density (vapor-like) fluctuations in their vicinity. To interrogate whether enhanced ice-like fluctuations are similarly observed near ice-philic surfaces, here we use molecular simulations and enhanced sampling techniques. Using a family of model surfaces for which the wetting coefficient, k, has previously been characterized, we show that the free energy of observing rare interfacial ice-density fluctuations decreases monotonically with increasing k. By utilizing this connection, we investigate a set of fcc systems and find that the (110) surface is more ice-philic than the (111) or (100) surfaces. By additionally analyzing the structure of interfacial ice, we find that all surfaces prefer to bind to the basal plane of ice, and the topographical complementarity of the (110) surface to the basal plane explains its higher ice-philicity. Using enhanced interfacial ice-like fluctuations as a measure of surface ice-philicity, we then characterize the ice-philicity of chemically heterogeneous and topologically complex systems. In particular, we study the spruce budworm antifreeze protein (sbwAFP), which binds to ice using a known ice-binding site (IBS) and resists engulfment using nonbinding sites of the protein (NBSs). We find that the IBS displays enhanced interfacial ice-density fluctuations and is therefore more ice-philic than the two NBSs studied. We also find the two NBSs are similarly ice-phobic. By establishing a connection between interfacial ice-like fluctuations and surface ice-philicity, our findings thus provide a way to characterize the ice-philicity of heterogeneous surfaces.
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Affiliation(s)
- Zachariah Vicars
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jeongmoon Choi
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Sean M Marks
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Richard C Remsing
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, United States
| | - Amish J Patel
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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3
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Wang Z, Ye X, Chen Y, Liu Y, Xie S, Tao Y, Zhang J, Wan X. Stereoselective Crystallization of Chiral Pharmaceuticals Aided by Cellulose Derivatives through Helical Pattern Matching. Chemistry 2024; 30:e202401550. [PMID: 38925570 DOI: 10.1002/chem.202401550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 06/21/2024] [Accepted: 06/25/2024] [Indexed: 06/28/2024]
Abstract
Stereoselective inhibition aided by "tailor-made" polymeric additives is an efficient approach to obtain enantiopure compounds through conglomerate crystallization. The chemical and configurational match between the side groups of polymers and the molecules of undesired enantiomer is considered to be a necessary condition for successful stereoseparation. Whereas in this contribution, we present an effective resolution of chiral pharmaceuticals by using cellulose acetates as the additives, which stereoselectively reside on the specific crystal faces of one enantiomer and inhibit its crystal nucleation and growth through helical pattern and supramolecular interaction complementarity. An investigation of nimodipine serves as a case study to highlight the novelty of this strategy wherein R-crystals exhibiting an impressive enantiomeric excess value of 97 % can be attained by employing a mere 0.01 wt % cellulose acetate. Guaifenesin and phenyl lactic acid are also well-resolved by utilizing this methodology. Our work not only brings about a brand-new design strategy for "tailor-made" additives, but will also promote the further exploration of the endless potential for utilizing natural biomolecules in chiral recognition and resolution.
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Affiliation(s)
- Zhaoxu Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030032, China
| | - Xichong Ye
- Shaanxi International Research Center for Soft Matter, State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yifu Chen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Yingze Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Siyu Xie
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Yi Tao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Jie Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Xinhua Wan
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
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4
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Tian X, Xu H, Qiu T, Wu F, Li X, Guo L. The Valence-Dependent Activity of Colloidal Molecules as Ice Recrystallization Inhibitors. ACS Macro Lett 2024; 13:935-942. [PMID: 39007898 DOI: 10.1021/acsmacrolett.4c00331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
Inspired by advances in cryopreservation techniques, which are essential for modern biomedical applications, there is a special interest in the ice recrystallization inhibition (IRI) of the antifreeze protein (AFPs) mimics. There are in-depth studies on synthetic materials mimicking AFPs, from simple molecular structure levels to complex self-assemblies. Herein, we report the valence-dependent IRI activity of colloidal organic molecules (CMs). The CMs were prepared through polymerization-induced particle-assembly (PIPA) of the ABC-type triblock terpolymer of poly(acryloxyethyl trimethylammonium chloride)-b-poly(benzyl acrylate)-b-poly(diacetone acrylamide) (PATAC-b-PBzA-b-PDAAM) at high monomer conversions. Stabilized by the cationic block of PATAC, the strong intermolecular H-bonding and incompatibility of the PDAAM block with PBzA contributed to the in situ formation of Janus particles (AX1) beyond the initial spherical seed particles (AX0), as well as the high valency clusters of linear AX2 and trigonal AX3. Their distribution was controlled mainly by the polymerization degrees (DPs) of PATAC and PDAAM blocks. IRI activity results of the CMs suggest that the higher fraction of AX1 results in the better IRI activity. Increasing the fraction of AX1 from 27% to 65% led to a decrease of the mean grain size from 39.8% to 10.9% and a depressed growth rate of ice crystals by 58%. Moreover, by replacing the PDAAM block with the temperature-responsive one of poly(N-isopropylacrylamide) (PNIPAM), temperature-adjustable IRI activity was observed, which is well related to the reversible transition of AX0 to AX1, providing a new idea for the molecular design of amphiphilic polymer nanoparticle-based IRI activity materials.
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Affiliation(s)
- Xiaoqian Tian
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Huangbing Xu
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, PR China
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Teng Qiu
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, PR China
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Fengjiao Wu
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Xiaoyu Li
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, PR China
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Longhai Guo
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, PR China
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, PR China
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5
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Jiang J, Lai Y, Sheng D, Tang G, Zhang M, Niu D, Yu F. Two-dimensional bilayer ice in coexistence with three-dimensional ice without confinement. Nat Commun 2024; 15:5762. [PMID: 38982091 PMCID: PMC11233582 DOI: 10.1038/s41467-024-50187-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 06/26/2024] [Indexed: 07/11/2024] Open
Abstract
Icing plays an important role in various physical-chemical process. Although the formation of two-dimensional ice requires nanoscale confinement, two-dimensional bilayer ice in coexistence with three-dimensional ice without confinement remains poorly understood. Here, a critical value of a surface energy parameter is identified to characterize the liquid-solid interface interaction, above which two-dimensional and three-dimensional coexisting ice can surprisingly form on the surface. The two-dimensional ice growth mechanisms could be revealed by capturing the growth and merged of the metastable edge structures. The phase diagram about temperature and pressure vs energy parameters is predicted to distinguish liquid water, two-dimensional ice and three-dimensional ice. Furthermore, the deicing characteristics of coexisting ice demonstrate that the ice adhesion strength is linearly related to the ratio of ice-surface interaction energy to ice temperature. In addition, for gas-solid phase transition, the phase diagram about temperature and energy parameters is predicted to distinguish gas, liquid water, two-dimensional ice and three-dimensional ice. This work gives a perspective for studying the singular structure and dynamics of ice in nanoscale and provides a guide for future experimental realization of the coexisting ice.
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Affiliation(s)
- Jing Jiang
- State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, CAS, Lanzhou, PR China
| | - Yuanming Lai
- State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, CAS, Lanzhou, PR China.
- Institute of Future Civil Technology, Chongqing Jiaotong University, Chongqing, PR China.
| | - Daichao Sheng
- School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW, Australia
| | - Guihua Tang
- MOE Key Laboratory of Thermo-Fluid Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, PR China
| | - Mingyi Zhang
- State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, CAS, Lanzhou, PR China
| | - Dong Niu
- Naval Architecture and Ocean Engineering College, Dalian Maritime University, Dalian, PR China
| | - Fan Yu
- State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, CAS, Lanzhou, PR China
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6
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Thosar AU, Cai Y, Marks SM, Vicars Z, Choi J, Pallath A, Patel AJ. On the engulfment of antifreeze proteins by ice. Proc Natl Acad Sci U S A 2024; 121:e2320205121. [PMID: 38833468 PMCID: PMC11181090 DOI: 10.1073/pnas.2320205121] [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: 12/04/2023] [Accepted: 04/16/2024] [Indexed: 06/06/2024] Open
Abstract
Antifreeze proteins (AFPs) are remarkable biomolecules that suppress ice formation at trace concentrations. To inhibit ice growth, AFPs must not only bind to ice crystals, but also resist engulfment by ice. The highest supercooling, [Formula: see text], for which AFPs are able to resist engulfment is widely believed to scale as the inverse of the separation, [Formula: see text], between bound AFPs, whereas its dependence on the molecular characteristics of the AFP remains poorly understood. By using specialized molecular simulations and interfacial thermodynamics, here, we show that in contrast with conventional wisdom, [Formula: see text] scales as [Formula: see text] and not as [Formula: see text]. We further show that [Formula: see text] is proportional to AFP size and that diverse naturally occurring AFPs are optimal at resisting engulfment by ice. By facilitating the development of AFP structure-function relationships, we hope that our findings will pave the way for the rational design of AFPs.
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Affiliation(s)
- Aniket U. Thosar
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA19104
| | - Yusheng Cai
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA19104
| | - Sean M. Marks
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA19104
| | - Zachariah Vicars
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA19104
| | - Jeongmoon Choi
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA19104
| | - Akash Pallath
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA19104
| | - Amish J. Patel
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA19104
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7
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Peng Z, Hu W, Yang X, Liu Q, Shi X, Tang X, Zhao P, Xia Q. Overexpression of bond-forming active protein for efficient production of silk with structural changes and properties enhanced in silkworm. Int J Biol Macromol 2024; 264:129780. [PMID: 38290638 DOI: 10.1016/j.ijbiomac.2024.129780] [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: 09/04/2023] [Revised: 01/24/2024] [Accepted: 01/24/2024] [Indexed: 02/01/2024]
Abstract
Silkworm silk exhibits excellent mechanical properties, biocompatibility, and has potential applications in the biomedical sector. This study focused on enhancing the mechanical properties of Bombyx mori silk by overexpressing three bond-forming active proteins (BFAPs): AFP, HSP, and CRP in the silk glands of silkworms. Rheological tests confirmed increased viscoelasticity in the liquid fibroin stock solution of transgenic silkworms, and dynamic mechanical thermal analysis (DMTA) indicated that all three BFAPs participated in the interactions between fibroin molecular networks in transgenic silk. The mechanical property assay indicated that all three BFAPs improved the mechanical characteristics of transgenic silk, with AFP and HSP having the most significant effects. A synchrotron radiation Fourier transform infrared spectroscopy assay showed that all three BFAPs increased the β-sheet content of transgenic silk. Synchrotron radiation wide-angle X-ray diffraction assay showed that all three BFAPs changed the crystallinity, crystal size, and orientation factor of the silk. AFP and HSP significantly improved the mechanical attributes of transgenic silk through increased crystallinity, refined crystal size, and a slight decrease in orientation. This study opens new possibilities for modifying silk and other fiber materials.
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Affiliation(s)
- Zhangchuan Peng
- Integrative Science Center of Germplasm Creation in Western China (Chongqing) Science City, Biological Science Research Center, Southwest University, Chongqing 400715, China; Chongqing Institute of Advanced Pathology, Jinfeng Laboratory, Chongqing 401329, China
| | - Wenbo Hu
- Integrative Science Center of Germplasm Creation in Western China (Chongqing) Science City, Biological Science Research Center, Southwest University, Chongqing 400715, China
| | - Xi Yang
- Chongqing Municipality Clinical Research Center for Endocrinology and Metabolic Diseases, Chongqing University Three Gorges Hospital, Chongqing 404000, China
| | - Qingsong Liu
- Integrative Science Center of Germplasm Creation in Western China (Chongqing) Science City, Biological Science Research Center, Southwest University, Chongqing 400715, China
| | - XiaoTing Shi
- Integrative Science Center of Germplasm Creation in Western China (Chongqing) Science City, Biological Science Research Center, Southwest University, Chongqing 400715, China
| | - Xin Tang
- Chongqing Key Laboratory of Chinese Medicine & Health Science, Chongqing Academy of Chinese Materia Medica, Chongqing College of Traditional Chinese Medicine, Chongqing, China
| | - Ping Zhao
- Integrative Science Center of Germplasm Creation in Western China (Chongqing) Science City, Biological Science Research Center, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Sericultural Science, Chongqing 400716, China; Chongqing Engineering and Technology Research Center for Novel Silk Materials, Chongqing 400716, China.
| | - Qingyou Xia
- Integrative Science Center of Germplasm Creation in Western China (Chongqing) Science City, Biological Science Research Center, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Sericultural Science, Chongqing 400716, China; Chongqing Engineering and Technology Research Center for Novel Silk Materials, Chongqing 400716, China.
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8
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Midya US, Bandyopadhyay S. Ice Recrystallization Unveils the Binding Mechanism Operating at a Diffused Interface. J Phys Chem B 2024; 128:1170-1178. [PMID: 38287221 DOI: 10.1021/acs.jpcb.3c05934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2024]
Abstract
Recrystallization of ice is a natural phenomenon that causes adverse effects in cryopreservation, agriculture, and in frozen food industry. It has long been recognized that ice recrystallization occurs through the Ostwald ripening and accretion processes. However, neither of these processes has been explored in microscopic detail by state-of-the-art experimental techniques. We carried out atomistic molecular dynamics (MD) simulations to explore ice recrystallization through the accretion process. Attempts have been made to elucidate the binding mechanism that is operating at the diffused ice-water interface. It is demonstrated that two ice crystals spontaneously recognize each other and bind together to form a large crystal in liquid water, resulting in ice recrystallization by accretion. Interestingly, the study reveals that the binding occurs due to the freezing of the interfacial water layer present between the two ice planes, even at a temperature above the melting point of the ice crystal. The synergistically enhanced ordering effect of two ice surfaces on the interfacial water leads to such freezing occurring during the binding process. However, proper crystallographic alignment is not necessarily required for the binding of the two crystals. Simulations have also been carried out to study the binding between an ice crystal and the model ice-binding surface (IBS) of an antifreeze protein above the melting point of the ice crystal. It is found that such binding at the IBS is accompanied by freezing of the interfacial water. This establishes that the synergetic ordering-driven freezing of interfacial water is a common binding mechanism at the diffused surfaces of ice crystals. We believe that this mechanism will provide a microscopic understanding of the process of recrystallization inhibition and thus help in designing suitable materials for potent applications in recrystallization inhibition.
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Affiliation(s)
| | - Sanjoy Bandyopadhyay
- Molecular Modeling Laboratory, Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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9
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Vance TDR. Ice Isn't the Only Crystal in Town: Structure Determination of Ice-Binding Proteins via X-Ray Crystallography. Methods Mol Biol 2024; 2730:35-62. [PMID: 37943449 DOI: 10.1007/978-1-0716-3503-2_3] [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-binding proteins (IBPs) are proteins that have the remarkable ability to bind to ice, and their study has intrigued researchers for decades. This chapter explores the importance of structural biology in understanding IBPs and highlights the significant contributions of IBPs to the field of structural biology. The structures of various IBPs from different organisms have been elucidated, revealing key elements involved in ice binding. Structural biology techniques, including nuclear magnetic resonance (NMR) spectroscopy, transmission electron cryo-microscopy (cryo-EM), and X-ray crystallography, play crucial roles in solving protein structures. This article focuses on X-ray crystallography as a tool for investigating IBP structures, providing insights into its theoretical and practical aspects, experimental workflows, and common pitfalls to avoid.
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Affiliation(s)
- Tyler D R Vance
- Department of Laboratory Medicine and Pathobiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
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10
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Hansen T, Lee J, Reicher N, Ovadia G, Guo S, Guo W, Liu J, Braslavsky I, Rudich Y, Davies PL. Ice nucleation proteins self-assemble into large fibres to trigger freezing at near 0 °C. eLife 2023; 12:RP91976. [PMID: 38109272 PMCID: PMC10727499 DOI: 10.7554/elife.91976] [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] [Indexed: 12/20/2023] Open
Abstract
In nature, frost can form at a few degrees below 0 °C. However, this process requires the assembly of tens of thousands of ice-like water molecules that align together to initiate freezing at these relatively high temperatures. Water ordering on this scale is mediated by the ice nucleation proteins (INPs) of common environmental bacteria like Pseudomonas syringae and Pseudomonas borealis. However, individually, these 100 kDa proteins are too small to organize enough water molecules for frost formation, and it is not known how giant, megadalton-sized multimers, which are crucial for ice nucleation at high sub-zero temperatures, form. The ability of multimers to self-assemble was suggested when the transfer of an INP gene into Escherichia coli led to efficient ice nucleation. Here, we demonstrate that a positively charged subdomain at the C-terminal end of the central β-solenoid of the INP is crucial for multimerization. Truncation, relocation, or change of the charge of this subdomain caused a catastrophic loss of ice nucleation ability. Cryo-electron tomography of the recombinant E. coli showed that the INP multimers form fibres that are ~5 nm across and up to 200 nm long. A model of these fibres as an overlapping series of antiparallel dimers can account for all their known properties and suggests a route to making cell-free ice nucleators for biotechnological applications.
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Affiliation(s)
- Thomas Hansen
- Department of Biomedical and Molecular Sciences, Queen’s UniversityKingstonCanada
| | - Jocelyn Lee
- Department of Biomedical and Molecular Sciences, Queen’s UniversityKingstonCanada
| | - Naama Reicher
- Department of Earth and Planetary Sciences, The Weizmann Institute of ScienceRehovotIsrael
| | - Gil Ovadia
- The Robert H. Smith Faculty of Agriculture, Food and Environment, Institute of Biochemistry, Food Science, and Nutrition, The Hebrew University of JerusalemRehovotIsrael
| | - Shuaiqi Guo
- Department of Microbial Pathogenesis, Yale University School of MedicineNew HavenUnited States
| | - Wangbiao Guo
- Department of Microbial Pathogenesis, Yale University School of MedicineNew HavenUnited States
| | - Jun Liu
- Department of Microbial Pathogenesis, Yale University School of MedicineNew HavenUnited States
| | - Ido Braslavsky
- The Robert H. Smith Faculty of Agriculture, Food and Environment, Institute of Biochemistry, Food Science, and Nutrition, The Hebrew University of JerusalemRehovotIsrael
| | - Yinon Rudich
- Department of Earth and Planetary Sciences, The Weizmann Institute of ScienceRehovotIsrael
| | - Peter L Davies
- Department of Biomedical and Molecular Sciences, Queen’s UniversityKingstonCanada
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11
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Dhibar S, Jana B. Accurate Prediction of Antifreeze Protein from Sequences through Natural Language Text Processing and Interpretable Machine Learning Approaches. J Phys Chem Lett 2023; 14:10727-10735. [PMID: 38009833 DOI: 10.1021/acs.jpclett.3c02817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Antifreeze proteins (AFPs) bind to growing iceplanes owing to their structural complementarity nature, thereby inhibiting the ice-crystal growth by thermal hysteresis. Classification of AFPs from sequence is a difficult task due to their low sequence similarity, and therefore, the usual sequence similarity algorithms, like Blast and PSI-Blast, are not efficient. Here, a method combining n-gram feature vectors and machine learning models to accelerate the identification of potential AFPs from sequences is proposed. All these n-gram features are extracted from the K-mer counting method. The comparative analysis reveals that, among different machine learning models, Xgboost outperforms others in predicting AFPs from sequence when penta-mers are used as a feature vector. When tested on an independent dataset, our method performed better compared to other existing ones with sensitivity of 97.50%, recall of 98.30%, and f1 score of 99.10%. Further, we used the SHAP method, which provides important insight into the functional activity of AFPs.
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Affiliation(s)
- Saikat Dhibar
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Biman Jana
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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12
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Hansen T, Lee JC, Reicher N, Ovadia G, Guo S, Guo W, Liu J, Braslavsky I, Rudich Y, Davies PL. Ice nucleation proteins self-assemble into large fibres to trigger freezing at near 0 °C. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.03.551873. [PMID: 37577566 PMCID: PMC10418271 DOI: 10.1101/2023.08.03.551873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
In nature, frost can form at a few degrees below 0 °C. However, this process requires the assembly of tens of thousands of ice-like water molecules that align together to initiate freezing at these relatively high temperatures. Water ordering on this scale is mediated by the ice nucleation proteins of common environmental bacteria like Pseudomonas syringae and P. borealis. However, individually, these 100-kDa proteins are too small to organize enough water molecules for frost formation, and it is not known how giant, megadalton-sized multimers, which are crucial for ice nucleation at high sub-zero temperatures, form. The ability of multimers to self-assemble was suggested when the transfer of an ice nucleation protein gene into Escherichia coli led to efficient ice nucleation. Here we demonstrate that a positively-charged sub-domain at the C-terminal end of the central beta-solenoid of the ice nucleation protein is crucial for multimerization. Truncation, relocation, or change of the charge of this subdomain caused a catastrophic loss of ice nucleation ability. Cryo-electron tomography of the recombinant E. coli showed that the ice nucleation protein multimers form fibres that are ~ 5 nm across and up to 200 nm long. A model of these fibres as an overlapping series of antiparallel dimers can account for all their known properties and suggests a route to making cell-free ice nucleators for biotechnological applications.
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Affiliation(s)
- Thomas Hansen
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON Canada K7L 3N6
| | - Jocelyn C. Lee
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON Canada K7L 3N6
| | - Naama Reicher
- Department of Earth and Planetary Sciences, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Gil Ovadia
- The Robert H. Smith Faculty of Agriculture, Food and Environment, Institute of Biochemistry, Food Science, and Nutrition, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
| | - Shuaiqi Guo
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT 06536
| | - Wangbiao Guo
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT 06536
| | - Jun Liu
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, CT 06536
| | - Ido Braslavsky
- The Robert H. Smith Faculty of Agriculture, Food and Environment, Institute of Biochemistry, Food Science, and Nutrition, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
| | - Yinon Rudich
- Department of Earth and Planetary Sciences, The Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Peter L. Davies
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON Canada K7L 3N6
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13
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Aich R, Pal P, Chakraborty S, Jana B. Preferential Ordering and Organization of Hydration Water Favor Nucleation of Ice by Ice-Nucleating Proteins over Antifreeze Proteins. J Phys Chem B 2023; 127:6038-6048. [PMID: 37395194 DOI: 10.1021/acs.jpcb.3c01641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Bacteria containing ice-nucleating proteins (INPs) evolved in nature to nucleate ice at the high sub-zero ambiance. The ability of the INPs to induce order in the hydration layer and their aggregation propensity appear to be key factors of their ice nucleation abilities. However, the mechanism of the process of ice nucleation by INPs is yet to be understood clearly. Here, we have performed all-atom molecular dynamics simulations and analyzed the structure and dynamics of the hydration layer around the proposed ice-nucleating surface of a model INP. Results are compared with the hydration of a topologically similar non-ice-binding protein (non-IBP) and another ice-growth inhibitory antifreeze protein (sbwAFP). We observed that the hydration structure around the ice-nucleating surface of INP is highly ordered and the dynamics of the hydration water are slower, compared to the non-IBP. Even the ordering of the hydration layer is more evident around the ice-binding surface of INP, compared to the antifreeze protein sbwAFP. Particularly with increasing repeat units of INP, we observe an increased population of ice-like water. Interestingly, the distances between the hydroxyl groups of the threonine ladder and its associated channel water of the ice-binding surface (IBS) of INP in the X and Y direction mimic the oxygen atom distances of the basal plane of hexagonal ice. However, the structural synergies between the hydroxyl group distances of the threonine ladder and its associated channel water of the IBS of sbwAFP and oxygen atom distances of the basal plane are less evident. This difference makes the IBS of the INP a better template for ice nucleation than AFP, although both of them bind to the ice surface efficiently.
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Affiliation(s)
- Rahul Aich
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Prasun Pal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Sandipan Chakraborty
- Center for Innovation in Molecular and Pharmaceutical Sciences (CIMPS), Dr. Reddy's Institution of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 5000046, India
| | - Biman Jana
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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14
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Marks SM, Vicars Z, Thosar AU, Patel AJ. Characterizing Surface Ice-Philicity Using Molecular Simulations and Enhanced Sampling. J Phys Chem B 2023. [PMID: 37378637 DOI: 10.1021/acs.jpcb.3c01627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
The formation of ice, which plays an important role in diverse contexts ranging from cryopreservation to atmospheric science, is often mediated by solid surfaces. Although surfaces that interact favorably with ice (relative to liquid water) can facilitate ice formation by lowering nucleation barriers, the molecular characteristics that confer icephilicity to a surface are complex and incompletely understood. To address this challenge, here we introduce a robust and computationally efficient method for characterizing surface ice-philicity that combines molecular simulations and enhanced sampling techniques to quantify the free energetic cost of increasing surface-ice contact at the expense of surface-water contact. Using this method to characterize the ice-philicity of a family of model surfaces that are lattice matched with ice but vary in their polarity, we find that the nonpolar surfaces are moderately ice-phobic, whereas the polar surfaces are highly ice-philic. In contrast, for surfaces that display no complementarity to the ice lattice, we find that ice-philicity is independent of surface polarity and that both nonpolar and polar surfaces are moderately ice-phobic. Our work thus provides a prescription for quantitatively characterizing surface ice-philicity and sheds light on how ice-philicity is influenced by lattice matching and polarity.
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Affiliation(s)
- Sean M Marks
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Zachariah Vicars
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Aniket U Thosar
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Amish J Patel
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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15
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Farag H, Peters B. Engulfment Avalanches and Thermal Hysteresis for Antifreeze Proteins on Supercooled Ice. J Phys Chem B 2023. [PMID: 37294871 DOI: 10.1021/acs.jpcb.3c01089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Antifreeze proteins (AFPs) bind to the ice-water surface and prevent ice growth at temperatures below 0 °C through a Gibbs-Thomson effect. Each adsorbed AFP creates a metastable depression on the surface that locally resists ice growth, until ice engulfs the AFP. We recently predicted the susceptibility to engulfment as a function of AFP size, distance between AFPs, and supercooling [ J. Chem. Phys. 2023, 158, 094501]. For an ensemble of AFPs adsorbed on the ice surface, the most isolated AFPs are the most susceptible, and when an isolated AFP gets engulfed, its former neighbors become more isolated and more susceptible to engulfment. Thus, an initial engulfment event can trigger an avalanche of subsequent engulfment events, leading to a sudden surge of unrestrained ice growth. This work develops a model to predict the supercooling at which the first engulfment event will occur for an ensemble of randomly distributed AFP pinning sites on an ice surface. Specifically, we formulate an inhomogeneous survival probability that accounts for the AFP coverage, the distribution of AFP neighbor distances, the resulting ensemble of engulfment rates, the ice surface area, and the cooling rate. We use the model to predict thermal hysteresis trends and compare with experimental data.
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Affiliation(s)
- Hossam Farag
- Nuclear, Plasma, and Radiological Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Baron Peters
- Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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16
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Scholl CL, Holmstrup M, Graham LA, Davies PL. Polyproline type II helical antifreeze proteins are widespread in Collembola and likely originated over 400 million years ago in the Ordovician Period. Sci Rep 2023; 13:8880. [PMID: 37264058 DOI: 10.1038/s41598-023-35983-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/26/2023] [Indexed: 06/03/2023] Open
Abstract
Antifreeze proteins (AFPs) bind to ice crystals to prevent organisms from freezing. A diversity of AFP folds has been found in fish and insects, including alpha helices, globular proteins, and several different beta solenoids. But the variety of AFPs in flightless arthropods, like Collembola, has not yet been adequately assessed. Here, antifreeze activity was shown to be present in 18 of the 22 species of Collembola from cold or temperate zones. Several methods were used to characterize these AFPs, including isolation by ice affinity purification, MALDI mass spectrometry, amino acid composition analysis, tandem mass spectrometry sequencing, transcriptome sequencing, and bioinformatic investigations of sequence databases. All of these AFPs had a high glycine content and were predicted to have the same polyproline type II helical bundle fold, a fold unique to Collembola. These Hexapods arose in the Ordovician Period with the two orders known to produce AFPs diverging around 400 million years ago during the Andean-Saharan Ice Age. Therefore, it is likely that the AFP arose then and persisted in many lineages through the following two ice ages and intervening warm periods, unlike the AFPs of fish which arose independently during the Cenozoic Ice Age beginning ~ 30 million years ago.
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Affiliation(s)
- Connor L Scholl
- Department of Biomedical and Molecular Sciences, Queen's University, 18 Stuart Street, Kingston, ON, K7L3N6, Canada
| | - Martin Holmstrup
- Section of Terrestrial Ecology, Department of Ecoscience, Aarhus University, C.F. Møllers Allé 4, 8000, Aarhus C, Denmark
- Arctic Research Center, Aarhus University, Ny Munkegade 114, 8000, Aarhus C, Denmark
| | - Laurie A Graham
- Department of Biomedical and Molecular Sciences, Queen's University, 18 Stuart Street, Kingston, ON, K7L3N6, Canada
| | - Peter L Davies
- Department of Biomedical and Molecular Sciences, Queen's University, 18 Stuart Street, Kingston, ON, K7L3N6, Canada.
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17
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Wei Y, Wang F, Guo Z. Bio-inspired and metal-derived superwetting surfaces: Function, stability and applications. Adv Colloid Interface Sci 2023; 314:102879. [PMID: 36934513 DOI: 10.1016/j.cis.2023.102879] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 02/19/2023] [Accepted: 03/07/2023] [Indexed: 03/14/2023]
Abstract
Due to their exceptional anti-icing, anti-corrosion, and anti-drag qualities, biomimetic metal-derived superwetting surfaces, which are widely employed in the aerospace, automotive, electronic, and biomedical industries, have raised significant concern. However, further applications in other domains have been hampered by the poor mechanical and chemical durability of superwetting metallic surfaces, which can result in metal fatigue and corrosion. The potential for anti-corrosion, anti-contamination, anti-icing, oil/water separation, and oil transportation on surfaces with superwettability has increased in recent years due to the advancement of research in biomimetic superwetting interface theory and practice. Recent developments in functionalized biomimetic metal-derived superwetting surfaces were summarized in this paper. Firstly, a detailed presentation of biomimetic metal-derived superwetting surfaces with unique capabilities was made. The problems with the long-term mechanical and chemical stability of biomimetic metal-derived superwetting surfaces were then examined, along with potential solutions. Finally, in an effort to generate fresh concepts for the study of biomimetic metal-derived superwetting surfaces, the applications of superwetting metallic surfaces in various domains were discussed in depth. The future direction of biomimetic metal-derived superwetting surfaces was also addressed.
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Affiliation(s)
- Yuren Wei
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, School of Materials Science & Engineering, Hubei Key Laboratory of Polymer Materials, Hubei University, Wuhan 430062, China
| | - Fengyi Wang
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, School of Materials Science & Engineering, Hubei Key Laboratory of Polymer Materials, Hubei University, Wuhan 430062, China.
| | - Zhiguang Guo
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, School of Materials Science & Engineering, Hubei Key Laboratory of Polymer Materials, Hubei University, Wuhan 430062, China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
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18
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Farag H, Peters B. Free energy barriers for anti-freeze protein engulfment in ice: Effects of supercooling, footprint size, and spatial separation. J Chem Phys 2023; 158:094501. [PMID: 36889941 DOI: 10.1063/5.0131983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Anti-freeze proteins (AFPs) protect organisms at freezing conditions by attaching to the ice surface and arresting its growth. Each adsorbed AFP locally pins the ice surface, resulting in a metastable dimple for which the interfacial forces counteract the driving force for growth. As supercooling increases, these metastable dimples become deeper, until metastability is lost in an engulfment event where the ice irreversibly swallows the AFP. Engulfment resembles nucleation in some respects, and this paper develops a model for the "critical profile" and free energy barrier for the engulfment process. Specifically, we variationally optimize the ice-water interface and estimate the free energy barrier as a function of the supercooling, the AFP footprint size, and the distance to neighboring AFPs on the ice surface. Finally, we use symbolic regression to derive a simple closed-form expression for the free energy barrier as a function of two physically interpretable, dimensionless parameters.
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Affiliation(s)
- Hossam Farag
- Nuclear, Plasma, and Radiological Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Baron Peters
- Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
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19
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Biomedical applications of solid-binding peptides and proteins. Mater Today Bio 2023; 19:100580. [PMID: 36846310 PMCID: PMC9950531 DOI: 10.1016/j.mtbio.2023.100580] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/06/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023] Open
Abstract
Over the past decades, solid-binding peptides (SBPs) have found multiple applications in materials science. In non-covalent surface modification strategies, solid-binding peptides are a simple and versatile tool for the immobilization of biomolecules on a vast variety of solid surfaces. Especially in physiological environments, SBPs can increase the biocompatibility of hybrid materials and offer tunable properties for the display of biomolecules with minimal impact on their functionality. All these features make SBPs attractive for the manufacturing of bioinspired materials in diagnostic and therapeutic applications. In particular, biomedical applications such as drug delivery, biosensing, and regenerative therapies have benefited from the introduction of SBPs. Here, we review recent literature on the use of solid-binding peptides and solid-binding proteins in biomedical applications. We focus on applications where modulating the interactions between solid materials and biomolecules is crucial. In this review, we describe solid-binding peptides and proteins, providing background on sequence design and binding mechanism. We then discuss their application on materials relevant for biomedicine (calcium phosphates, silicates, ice crystals, metals, plastics, and graphene). Although the limited characterization of SBPs still represents a challenge for their design and widespread application, our review shows that SBP-mediated bioconjugation can be easily introduced into complex designs and on nanomaterials with very different surface chemistries.
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20
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Morgan-Richards M, Marshall CJ, Biggs PJ, Trewick SA. Insect Freeze-Tolerance Downunder: The Microbial Connection. INSECTS 2023; 14:89. [PMID: 36662017 PMCID: PMC9860888 DOI: 10.3390/insects14010089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 01/10/2023] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
Insects that are freeze-tolerant start freezing at high sub-zero temperatures and produce small ice crystals. They do this using ice-nucleating agents that facilitate intercellular ice growth and prevent formation of large crystals where they can damage tissues. In Aotearoa/New Zealand the majority of cold adapted invertebrates studied survive freezing at any time of year, with ice formation beginning in the rich microbiome of the gut. Some freeze-tolerant insects are known to host symbiotic bacteria and/or fungi that produce ice-nucleating agents and we speculate that gut microbes of many New Zealand insects may provide ice-nucleating active compounds that moderate freezing. We consider too the possibility that evolutionary disparate freeze-tolerant insect species share gut microbes that are a source of ice-nucleating agents and so we describe potential transmission pathways of shared gut fauna. Despite more than 30 years of research into the freeze-tolerant mechanisms of Southern Hemisphere insects, the role of exogenous ice-nucleating agents has been neglected. Key traits of three New Zealand freeze-tolerant lineages are considered in light of the supercooling point (temperature of ice crystal formation) of microbial ice-nucleating particles, the initiation site of freezing, and the implications for invertebrate parasites. We outline approaches that could be used to investigate potential sources of ice-nucleating agents in freeze-tolerant insects and the tools employed to study insect microbiomes.
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Affiliation(s)
- Mary Morgan-Richards
- Wildlife & Ecology Group, School of Natural Sciences, Massey University Manawatu, Palmerston North 4410, New Zealand
| | - Craig J. Marshall
- Department of Biochemistry, University of Otago, Dunedin 9016, New Zealand
| | - Patrick J. Biggs
- Molecular Biosciences, School of Natural Sciences, Massey University Manawatu, Palmerston North 4410, New Zealand
| | - Steven A. Trewick
- Wildlife & Ecology Group, School of Natural Sciences, Massey University Manawatu, Palmerston North 4410, New Zealand
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21
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Kuramochi M, Arai T, Mio K, Tsuda S, Sasaki YC. The effect of ice-binding proteins on the cryopreservation of Caenorhabditis elegans. MICROPUBLICATION BIOLOGY 2023; 2023:10.17912/micropub.biology.000734. [PMID: 37090154 PMCID: PMC10119691 DOI: 10.17912/micropub.biology.000734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/19/2023] [Accepted: 04/05/2023] [Indexed: 04/25/2023]
Abstract
Ice-binding proteins (IBPs) are capable of binding ice crystals and inhibiting their growth. IBPs have also been reported to stabilize cell membranes under non-freezing conditions. The effects of IBPs help to reduce cold- and freezing-induced damage to cells and tissues in cryopreservation. Here, we examined whether certain IBPs, namely, fish NfeIBP6 and NfeIBP8 and fungal AnpIBP1a N55D (AnpIBP), improve the recovery rate of the nematode Caenorhabditis elegans after a deep cryopreservation at -80°C. The expression of fungus-derived AnpIBP in C. elegans significantly improved its recovery rate. This result provides useful information to establish a cryopreservation technique for long-term storage using IBP molecules.
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Affiliation(s)
- Masahiro Kuramochi
- Graduate School of Science and Engineering, Ibaraki University, Hitachi, 316-8511, Japan
- Correspondence to: Masahiro Kuramochi (
)
| | - Tatsuya Arai
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, 277-8561, 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
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, 277-8561, Japan
| | - Yuji C Sasaki
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, 277-8561, Japan
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22
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Lin M, Cao H, Li J. Control strategies of ice nucleation, growth, and recrystallization for cryopreservation. Acta Biomater 2023; 155:35-56. [PMID: 36323355 DOI: 10.1016/j.actbio.2022.10.056] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/20/2022] [Accepted: 10/26/2022] [Indexed: 02/02/2023]
Abstract
The cryopreservation of biomaterials is fundamental to modern biotechnology and biomedicine, but the biggest challenge is the formation of ice, resulting in fatal cryoinjury to biomaterials. To date, abundant ice control strategies have been utilized to inhibit ice formation and thus improve cryopreservation efficiency. This review focuses on the mechanisms of existing control strategies regulating ice formation and the corresponding applications to biomaterial cryopreservation, which are of guiding significance for the development of ice control strategies. Herein, basics related to biomaterial cryopreservation are introduced first. Then, the theoretical bases of ice nucleation, growth, and recrystallization are presented, from which the key factors affecting each process are analyzed, respectively. Ice nucleation is mainly affected by melting temperature, interfacial tension, shape factor, and kinetic prefactor, and ice growth is mainly affected by solution viscosity and cooling/warming rate, while ice recrystallization is inhibited by adsorption or diffusion mechanisms. Furthermore, the corresponding research methods and specific control strategies for each process are summarized. The review ends with an outlook of the current challenges and future perspectives in cryopreservation. STATEMENT OF SIGNIFICANCE: Ice formation is the major limitation of cryopreservation, which causes fatal cryoinjury to cryopreserved biomaterials. This review focuses on the three processes related to ice formation, called nucleation, growth, and recrystallization. The theoretical models, key influencing factors, research methods and corresponding ice control strategies of each process are summarized and discussed, respectively. The systematic introduction on mechanisms and control strategies of ice formation is instructive for the cryopreservation development.
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Affiliation(s)
- Min Lin
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory for CO(2) Utilization and Reduction Technology, Tsinghua University, Beijing 100084, China
| | - Haishan Cao
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory for CO(2) Utilization and Reduction Technology, Tsinghua University, Beijing 100084, China.
| | - Junming Li
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory for CO(2) Utilization and Reduction Technology, Tsinghua University, Beijing 100084, China
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23
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Pal P, Aich R, Chakraborty S, Jana B. Molecular Factors of Ice Growth Inhibition for Hyperactive and Globular Antifreeze Proteins: Insights from Molecular Dynamics Simulation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:15132-15144. [PMID: 36450094 DOI: 10.1021/acs.langmuir.2c02149] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The molecular mechanism behind the ice growth inhibition by antifreeze proteins (AFPs) is yet to be understood completely. Also, what physical parameters differentiate between the AFP and non-AFP are largely unknown. Thus, to get an atomistic overview of the differential antifreeze activities of different classes of AFPs, we have studied ice growth from different ice surfaces in the presence of a moderately active globular type III AFP and a hyperactive spruce budworm (sbw) AFP. Results are compared with the observations of ice growth simulations in the presence of topologically similar non-AFPs using all-atom molecular dynamics simulations. Simulation data suggest that the ice surface coverage is a critical factor in ice growth inhibition. Due to the presence of an ice binding surface (IBS), AFPs form a high affinity complex with ice, accompanied by a transition of hydration water around the IBS from clathrate-like to ice-like. Several residues around the periphery of the IBS anchor the AFP to the curved ice surface mediated by multiple strong hydrogen bonds, stabilizing the complex immensely. In the high surface coverage regime, the slow unbinding kinetics dominates over the ice growth kinetics and thus facilitates the ice growth inhibition. Due to the non-availability of a proper IBS, non-AFPs form a low-affinity complex with the growing ice surface. As a result, the non-AFPs are continuously repelled by the surface. If the concentration of AFPs is low, then the effective surface coverage is reduced significantly. In this low surface coverage regime, AFPs can also behave like impurities and are engulfed by the growing ice crystal.
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Affiliation(s)
- Prasun Pal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Rahul Aich
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Sandipan Chakraborty
- Center for Innovation in Molecular and Pharmaceutical Sciences (CIMPS), Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500046, India
| | - Biman Jana
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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24
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Delesky EA, Garcia LF, Lobo AJ, Mikofsky RA, Dowdy ND, Wallat JD, Miyake GM, Srubar WV. Bioinspired Threonine-Based Polymers with Potent Ice Recrystallization Inhibition Activity. ACS APPLIED POLYMER MATERIALS 2022; 4:7934-7942. [PMID: 36714526 PMCID: PMC9881732 DOI: 10.1021/acsapm.2c01496] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Ice growth mitigation is a pervasive challenge for multiple industries. In nature, ice-binding proteins (IBPs) demonstrate potent ice growth prevention through ice recrystallization inhibition (IRI). However, IBPs are expensive, difficult to produce in large quantities, and exhibit minimal resilience to nonphysiological environmental stressors, such as pH. For these reasons, researchers have turned to bioinspired polymeric materials that mimic IBP behavior. To date, however, no synthetic polymer has rivaled the ability of native IBPs to display IRI activity at ultralow nanomolar concentrations. In this work, we study the IRI activity of peptides and polypeptides inspired by common ice-binding residues of IBPs to inform the synthesis and characterization of a potent bioinspired polymer that mimics IBP behavior. We show first that the threonine polypeptide (pThr) displays the best IRI activity in phosphate-buffered saline (PBS). Second, we use pThr as a molecular model to synthesize and test a bioinspired polymer, poly(2-hydroxypropyl methacrylamide) (pHPMA). We show that pHPMA exhibits potent IRI activity in neutral PBS at ultralow concentrations (0.01 mg/mL). pHPMA demonstrates potent IRI activity at low molecular weights (2.3 kDa), with improved activity at higher molecular weights (32.8 kDa). These results substantiate that pHPMA is a robust molecule that mitigates ice crystal growth at concentrations similar to native IBPs.
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Affiliation(s)
- Elizabeth A Delesky
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, Colorado 80309-0428, United States
| | - Luis F Garcia
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Aparna J Lobo
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80309-0428, United States
| | - Rebecca A Mikofsky
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, Colorado 80309-0428, United States
| | - Nicolas D Dowdy
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, Colorado 80309-0428, United States
| | - Jaqueline D Wallat
- Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, Colorado 80309-0428, United States
| | - Garret M Miyake
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Wil V Srubar
- Materials Science and Engineering Program and Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, Colorado 80309-0428, United States
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25
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Electron microscopy and calorimetry of proteins in supercooled water. Sci Rep 2022; 12:16512. [PMID: 36192511 PMCID: PMC9529883 DOI: 10.1038/s41598-022-20430-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 09/13/2022] [Indexed: 11/08/2022] Open
Abstract
Some of the best nucleating agents in nature are ice-nucleating proteins, which boost ice growth better than any other material. They can induce immersion freezing of supercooled water only a few degrees below 0 °C. An open question is whether this ability also extends to the deposition mode, i.e., to water vapor. In this work, we used three proteins, apoferritin, InaZ (ice nucleation active protein Z), and myoglobin, of which the first two are classified as ice-nucleating proteins for the immersion freezing mode. We studied the ice nucleation ability of these proteins by differential scanning calorimetry (immersion freezing) and by environmental scanning electron microscopy (deposition freezing). Our data show that InaZ crystallizes water directly from the vapor phase, while apoferritin first condenses water in the supercooled state, and subsequently crystallizes it, just as myoglobin, which is unable to nucleate ice.
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26
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Water-organizing motif continuity is critical for potent ice nucleation protein activity. Nat Commun 2022; 13:5019. [PMID: 36028506 PMCID: PMC9418140 DOI: 10.1038/s41467-022-32469-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 07/29/2022] [Indexed: 12/02/2022] Open
Abstract
Bacterial ice nucleation proteins (INPs) can cause frost damage to plants by nucleating ice formation at high sub-zero temperatures. Modeling of Pseudomonas borealis INP by AlphaFold suggests that the central domain of 65 tandem sixteen-residue repeats forms a beta-solenoid with arrays of outward-pointing threonines and tyrosines, which may organize water molecules into an ice-like pattern. Here we report that mutating some of these residues in a central segment of P. borealis INP, expressed in Escherichia coli, decreases ice nucleation activity more than the section’s deletion. Insertion of a bulky domain has the same effect, indicating that the continuity of the water-organizing repeats is critical for optimal activity. The ~10 C-terminal coils differ from the other 55 coils in being more basic and lacking water-organizing motifs; deletion of this region eliminates INP activity. We show through sequence modifications how arrays of conserved motifs form the large ice-nucleating surface required for potency. Ice nucleation proteins have the same tandemly arrayed water-organizing motifs seen in some antifreeze proteins, but on a larger scale. The authors show that mutation, interruption, and truncation of these arrays reduce ice nucleation activity indicating that the two protein types share a common mechanism.
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27
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Jiang S, Diao Y, Yang H. Recent advances of bio-inspired anti-icing surfaces. Adv Colloid Interface Sci 2022; 308:102756. [PMID: 36007284 DOI: 10.1016/j.cis.2022.102756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 07/16/2022] [Accepted: 08/11/2022] [Indexed: 11/25/2022]
Abstract
The need for improved anti-icing surfaces is the demand of the time and closely related to many important aspects of our lives as surface icing threatens not only industrial production but also human safety. Freezing on a cold surface is usually a heterogeneous nucleation process induced by the substrate. Creating an anti-icing surface is mainly achieved by changing surface morphology and chemistry to regulate the interaction between the surface and the water/ice to inhibit freezing on the surface. In this paper, recent research progress in the creation of biomimetic anti-icing surfaces is reviewed. Firstly, basic strategies of bionic anti-icing are introduced, and then bionic anti-icing surface strategies are reviewed according to four aspects: the process of ice formation, including condensate self-removing, inhibiting ice nucleation, reducing ice adhesion, and melting accumulated ice on the surface. The remaining challenges and the direction of future development of biomimetic anti-icing surfaces are also discussed.
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Affiliation(s)
- Shanshan Jiang
- School of Materials Science and Engineering, Zhengzhou University, 450001 Zhengzhou, Henan, China
| | - Yunhe Diao
- School of Materials Science and Engineering, Zhengzhou University, 450001 Zhengzhou, Henan, China
| | - Huige Yang
- School of Materials Science and Engineering, Zhengzhou University, 450001 Zhengzhou, Henan, China.
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28
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Kuramochi M, Zhu S, Takanashi C, Yang Y, Arai T, Shinkai Y, Doi M, Mio K, Tsuda S, Sasaki YC. A mutation to a fish ice-binding protein synthesized in transgenic Caenorhabditis elegans modulate its cold tolerance. Biochem Biophys Res Commun 2022; 628:98-103. [PMID: 36084557 DOI: 10.1016/j.bbrc.2022.08.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 08/24/2022] [Indexed: 11/02/2022]
Abstract
A cryoprotectant known as ice-binding protein (IBP) is thought to facilitate the cold survival of plants, insects, and fungi. Here, we prepared a genetically modified Caenorhabditis elegans strain to synthesize fish-derived IBPs in its body wall muscles and examined whether the antifreeze activity modification of this IBP by point mutation affects the cold tolerance of this worm. We chose a 65-residue IBP identified from notched-fin eelpout, for which the replacement of the 20th alanine residue (A20) modifies its antifreeze activity. These mutant proteins are denoted A20L, A20G, A20T, A20V, and A20I along with the wild-type (WT) protein. We evaluated the survival rate (%) of the transgenic C. elegans that synthesized each IBP mutant following 24 h of preservation at -5, +2, and +5 °C. Significantly, a dramatic improvement in the survival rate was detected for the worms synthesizing the activity-enhanced mutants (A20T and A20I), especially at +2 °C. In contrast, the rate was not improved by the expression of the defective mutants (A20L, A20G, WT and A20V). The survival rate (%) probably correlates with the antifreeze activity of the IBP. These data suggest that IBP protects the cell membrane by employing its ice-binding mechanism, which ultimately improves the cold tolerance of an IBP-containing animal.
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29
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Béliveau C, Gagné P, Picq S, Vernygora O, Keeling CI, Pinkney K, Doucet D, Wen F, Spencer Johnston J, Maaroufi H, Boyle B, Laroche J, Dewar K, Juretic N, Blackburn G, Nisole A, Brunet B, Brandão M, Lumley L, Duan J, Quan G, Lucarotti CJ, Roe AD, Sperling FAH, Levesque RC, Cusson M. The Spruce Budworm Genome: Reconstructing the Evolutionary History of Antifreeze Proteins. Genome Biol Evol 2022; 14:evac087. [PMID: 35668612 PMCID: PMC9210311 DOI: 10.1093/gbe/evac087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/27/2022] [Accepted: 05/31/2022] [Indexed: 11/13/2022] Open
Abstract
Insects have developed various adaptations to survive harsh winter conditions. Among freeze-intolerant species, some produce "antifreeze proteins" (AFPs) that bind to nascent ice crystals and inhibit further ice growth. Such is the case of the spruce budworm, Choristoneura fumiferana (Lepidoptera: Tortricidae), a destructive North American conifer pest that can withstand temperatures below -30°C. Despite the potential importance of AFPs in the adaptive diversification of Choristoneura, genomic tools to explore their origins have until now been limited. Here we present a chromosome-scale genome assembly for C. fumiferana, which we used to conduct comparative genomic analyses aimed at reconstructing the evolutionary history of tortricid AFPs. The budworm genome features 16 genes homologous to previously reported C. fumiferana AFPs (CfAFPs), 15 of which map to a single region on chromosome 18. Fourteen of these were also detected in five congeneric species, indicating Choristoneura AFP diversification occurred before the speciation event that led to C. fumiferana. Although budworm AFPs were previously considered unique to the genus Choristoneura, a search for homologs targeting recently sequenced tortricid genomes identified seven CfAFP-like genes in the distantly related Notocelia uddmanniana. High structural similarity between Notocelia and Choristoneura AFPs suggests a common origin, despite the absence of homologs in three related tortricids. Interestingly, one Notocelia AFP formed the C-terminus of a "zonadhesin-like" protein, possibly representing the ancestral condition from which tortricid AFPs evolved. Future work should clarify the evolutionary path of AFPs between Notocelia and Choristoneura and assess the role of the "zonadhesin-like" protein as precursor of tortricid AFPs.
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Affiliation(s)
- Catherine Béliveau
- Laurentian Forestry Centre, Natural Resources Canada, Quebec City, Quebec, Canada
| | - Patrick Gagné
- Laurentian Forestry Centre, Natural Resources Canada, Quebec City, Quebec, Canada
| | - Sandrine Picq
- Laurentian Forestry Centre, Natural Resources Canada, Quebec City, Quebec, Canada
| | - Oksana Vernygora
- Department of Entomology, University of Kentucky, Lexington, Kentucky, USA
| | - Christopher I Keeling
- Laurentian Forestry Centre, Natural Resources Canada, Quebec City, Quebec, Canada
- Département de biochimie, de microbiologie et de bio-informatique, Université Laval, Quebec City, Quebec, Canada
| | - Kristine Pinkney
- Great Lakes Forestry Centre, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada
| | - Daniel Doucet
- Great Lakes Forestry Centre, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada
| | - Fayuan Wen
- Great Lakes Forestry Centre, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada
- Center for Sickle Cell Disease, College of Medicine, Howard University, Washington DC, USA
| | - J Spencer Johnston
- Department of Entomology, Texas A&M University, 2475 College Station, Texas, USA
| | - Halim Maaroufi
- Institut de biologie intégrative et des systèmes, Université Laval, Quebec City, Quebec, Canada
| | - Brian Boyle
- Institut de biologie intégrative et des systèmes, Université Laval, Quebec City, Quebec, Canada
| | - Jérôme Laroche
- Institut de biologie intégrative et des systèmes, Université Laval, Quebec City, Quebec, Canada
| | - Ken Dewar
- Quantitative Life Sciences, McGill University, Montreal, Quebec, Canada
| | - Nikoleta Juretic
- Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Gwylim Blackburn
- Pacific Forestry Centre, Natural Resources Canada, Victoria, British Columbia, Canada
| | - Audrey Nisole
- Laurentian Forestry Centre, Natural Resources Canada, Quebec City, Quebec, Canada
| | - Bryan Brunet
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, Ontario, Canada
| | - Marcelo Brandão
- Laboratório de Biologia Integrativa e Sistêmica - CBMEG/UNICAMP, Campinas, Brazil
| | - Lisa Lumley
- Alberta Biodiversity Monitoring Institute, University of Alberta, Edmonton, Alberta, Canada
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Jun Duan
- Great Lakes Forestry Centre, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada
- University of British Columbia, Vancouver, British Columbia, Canada
| | - Guoxing Quan
- Great Lakes Forestry Centre, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada
| | | | - Amanda D Roe
- Great Lakes Forestry Centre, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada
| | - Felix A H Sperling
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Roger C Levesque
- Institut de biologie intégrative et des systèmes, Université Laval, Quebec City, Quebec, Canada
| | - Michel Cusson
- Laurentian Forestry Centre, Natural Resources Canada, Quebec City, Quebec, Canada
- Département de biochimie, de microbiologie et de bio-informatique, Université Laval, Quebec City, Quebec, Canada
- Institut de biologie intégrative et des systèmes, Université Laval, Quebec City, Quebec, Canada
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30
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Yu H, Zhang Q, Zhuang W. Comparative analysis of hydration layer reorientation dynamics of antifreeze protein and protein cytochrome P450. CHINESE J CHEM PHYS 2022. [DOI: 10.1063/1674-0068/cjcp2203038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Antifreeze proteins (AFPs) inhibit ice re-crystallization by a mechanism remaining largely elusive. Dynamics of AFPs’ hydration water and its involvement in the antifreeze activity have not been identified conclusively. We herein, by simulation and theory, examined the water reorientation dynamics in the first hydration layer of an AFP from the spruce budworm, Choristoneura fumiferana, compared with a protein cytochrome P450 (CYP). The increase of potential acceptor water molecules around donor water molecules leads to the acceleration of hydrogen bond exchange between water molecules. Therefore, the jump reorientation of water molecules around the AFP active region is accelerated. Due to the mutual coupling and excitation of hydrogen bond exchange, with the acceleration of hydrogen bond exchange, the rearrangement of the hydrogen bond network and the frame reorientation of water are accelerated. Therefore, the water reorientation dynamics of AFP is faster than that of CYP. The results of this study provide a new physical image of antifreeze protein and a new understanding of the antifreeze mechanism of antifreeze proteins.
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Affiliation(s)
- Hongfeng Yu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qiang Zhang
- College of Chemistry and Material Sciences, Inner Mongolia Minzu University, Tongliao 028043, China
| | - Wei Zhuang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
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31
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Davies PL. Reflections on antifreeze proteins and their evolution. Biochem Cell Biol 2022; 100:282-291. [PMID: 35580352 DOI: 10.1139/bcb-2022-0029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The discovery of radically different antifreeze proteins (AFPs) in fishes during the 1970s and 1980s suggested that these proteins had recently and independently evolved to protect teleosts from freezing in icy seawater. Early forays into the isolation and characterization of AFP genes in these fish showed they were massively amplified, often in long tandem repeats. The work of many labs in the 1980s onward led to the discovery and characterization of AFPs in other kingdoms, such as insects, plants, and many different microorganisms. The distinct ice-binding property that these ice-binding proteins (IBPs) share has facilitated their purification through adsorption to ice, and the ability to produce recombinant versions of IBPs has enabled their structural characterization and the mapping of their ice-binding sites (IBSs) using site-directed mutagenesis. One hypothesis for their ice affinity is that the IBS organizes surface waters into an ice-like pattern that freezes the protein onto ice. With access now to a rapidly expanding database of genomic sequences, it has been possible to trace the origins of some fish AFPs through the process of gene duplication and divergence, and to even show the horizontal transfer of an AFP gene from one species to another.
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Affiliation(s)
- Peter L Davies
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON K7L 3N6, Canada
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32
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Delesky EA, Srubar WV. Ice-binding proteins and bioinspired synthetic mimics in non-physiological environments. iScience 2022; 25:104286. [PMID: 35573196 PMCID: PMC9097698 DOI: 10.1016/j.isci.2022.104286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Elizabeth A. Delesky
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Wil V. Srubar
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO 80309, USA
- Department of Civil, Environmental and Architectural Engineering, University of Colorado Boulder, ECOT 441 UCB 428, Boulder, CO 80309, USA
- Corresponding author
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33
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Deeva AA, Glukhova KA, Isoyan LS, Okulova YD, Uversky VN, Melnik BS. Design and Analysis of a Mutant form of the Ice-Binding Protein from Choristoneura fumiferana. Protein J 2022; 41:304-314. [PMID: 35366124 DOI: 10.1007/s10930-022-10049-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2022] [Indexed: 10/18/2022]
Abstract
Ice-binding proteins are expressed in the cells of some cold adapted organisms, helping them to survive at extremely low temperatures. One of the problems in studying such proteins is the difficulty of their isolation and purification. For example, eight cysteine residues in the cfAF (antifreeze protein from the eastern spruce budworm Choristoneura fumiferana) form intermolecular bridges during the overexpression of this protein. This impedes the process of the protein purification dramatically. To overcome this issue, in this work, we designed a mutant form of the ice-binding protein cfAFP, which is much easier to isolate that the wild-type protein. The mutant form named mIBP83 did not lose the ability to bind to ice surface. Besides, observation of the processes of freezing and melting of ice in the presence of mIBP83 showed that this protein affects the process of ice melting, increasing its melting temperature, and does not decrease the water freezing temperature.
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Affiliation(s)
- Anna A Deeva
- Biophysics Department, Siberian Federal University, Svobodny 79, Krasnoyarsk, Russia, 660041
| | - Ksenia A Glukhova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Puschino, Russia
| | - Lala S Isoyan
- Biophysics Department, Siberian Federal University, Svobodny 79, Krasnoyarsk, Russia, 660041
| | - Yuliya D Okulova
- Institute of Protein Research of the Russian Academy of Sciences, 4 Institutskaya Str., Pushchino, Moscow Region, Russia, 142290
| | - Vladimir N Uversky
- Department of Molecular Medicine and Byrd Alzheimer's Research Institure, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Bogdan S Melnik
- Institute of Protein Research of the Russian Academy of Sciences, 4 Institutskaya Str., Pushchino, Moscow Region, Russia, 142290.
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35
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Ekpo MD, Xie J, Hu Y, Liu X, Liu F, Xiang J, Zhao R, Wang B, Tan S. Antifreeze Proteins: Novel Applications and Navigation towards Their Clinical Application in Cryobanking. Int J Mol Sci 2022; 23:2639. [PMID: 35269780 PMCID: PMC8910022 DOI: 10.3390/ijms23052639] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 02/16/2022] [Accepted: 02/25/2022] [Indexed: 12/04/2022] Open
Abstract
Antifreeze proteins (AFPs) or thermal hysteresis (TH) proteins are biomolecular gifts of nature to sustain life in extremely cold environments. This family of peptides, glycopeptides and proteins produced by diverse organisms including bacteria, yeast, insects and fish act by non-colligatively depressing the freezing temperature of the water below its melting point in a process termed thermal hysteresis which is then responsible for ice crystal equilibrium and inhibition of ice recrystallisation; the major cause of cell dehydration, membrane rupture and subsequent cryodamage. Scientists on the other hand have been exploring various substances as cryoprotectants. Some of the cryoprotectants in use include trehalose, dimethyl sulfoxide (DMSO), ethylene glycol (EG), sucrose, propylene glycol (PG) and glycerol but their extensive application is limited mostly by toxicity, thus fueling the quest for better cryoprotectants. Hence, extracting or synthesizing antifreeze protein and testing their cryoprotective activity has become a popular topic among researchers. Research concerning AFPs encompasses lots of effort ranging from understanding their sources and mechanism of action, extraction and purification/synthesis to structural elucidation with the aim of achieving better outcomes in cryopreservation. This review explores the potential clinical application of AFPs in the cryopreservation of different cells, tissues and organs. Here, we discuss novel approaches, identify research gaps and propose future research directions in the application of AFPs based on recent studies with the aim of achieving successful clinical and commercial use of AFPs in the future.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Songwen Tan
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China; (M.D.E.); (J.X.); (Y.H.); (X.L.); (F.L.); (J.X.); (R.Z.); (B.W.)
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36
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Hu R, Zhang M, Liu W, Mujumdar AS, Bai B. Novel synergistic freezing methods and technologies for enhanced food product quality: A critical review. Compr Rev Food Sci Food Saf 2022; 21:1979-2001. [PMID: 35179815 DOI: 10.1111/1541-4337.12919] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 12/19/2021] [Accepted: 01/04/2022] [Indexed: 11/28/2022]
Abstract
Freezing has a long history as an effective food preservation method, but traditional freezing technologies have quality limitations, such as the potential for water loss and/or shrinkage and/or nutrient loss, etc. in the frozen products. Due to enhanced quality preservation and simpler thawing operation, synergistic technologies for freezing are emerging as the optimal methods for frozen food processing. This article comprehensively reviewed the recently developed synergistic technologies for freezing and pretreatment, for example, ultrasonication, cell alive system freezing, glass transition temperature regulation, high pressure freezing, pulsed electric field pretreatment, osmotic pretreatment, and antifreeze protein pretreatment, etc. The mechanisms and applications of these techniques are outlined briefly here. Though the application of new treatments in freezing is relatively mature, reducing the energy consumption in the application of these new technologies is a key issue for future research. It is also necessary to consider scale-up issues involved in large-scale applications as much of the research effort so far is limited to laboratory or pilot scale. For future development, intelligent freezing should be given more attention. Freezing should automatically identify and respond to different freezing conditions according to the nature of different materials to achieve more efficient freezing. PRACTICAL APPLICATION: This paper provides a reference for subsequent production and research, and analyzes the advantages and disadvantages of different novel synergistic technologies, which points out the direction for subsequent industry development and research. At the same time, it provides new ideas for the freezing industry.
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Affiliation(s)
- Rui Hu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,Jiangsu Province International Joint Laboratory on Fresh Food Smart Processing and Quality Monitoring, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Min Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Wenchao Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Arun S Mujumdar
- Department of Bioresource Engineering, Macdonald Campus, McGill University, Ste. Anne decBellevue, Quebec, Canada
| | - Baosong Bai
- Yechun Food Production and Distribution Co., Ltd., Yangzhou, Jiangsu, P. R. China
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37
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Fu D, Sun Y, Gao H, Liu B, Kang X, Chen H. Identification and Functional Characterization of Antifreeze Protein and Its Mutants in Dendroctonus armandi (Coleoptera: Curculionidae: Scolytinae) Larvae Under Cold Stress. ENVIRONMENTAL ENTOMOLOGY 2022; 51:167-181. [PMID: 34897398 DOI: 10.1093/ee/nvab134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Indexed: 06/14/2023]
Abstract
Dendroctonus armandi (Tsai and Li) (Coleoptera: Curculionidae: Scolytinae) is considered to be the most destructive forest pest in the Qinling and Bashan Mountains of China. Low winter temperatures limit insect's populations, distribution, activity, and development. Insects have developed different strategies such as freeze-tolerance and freeze-avoidance to survive in low temperature conditions. In the present study, we used gene cloning, real-time polymerase chain reaction (PCR), RNA interference (RNAi), and heterologous expression to study the function of the D. armandi antifreeze protein gene (DaAFP). We cloned the 800 bp full-length cDNA encoding 228 amino acids of DaAFP and analyzed its structure using bioinformatics analysis. The DaAFP amino acid sequence exhibited 24-86% similarity with other insect species. The expression of DaAFP was high in January and in the larvae, head, and midgut of D. armandi. In addition, the expression of DaAFP increased with decreasing temperature and increasing exposure time. RNAi analysis also demonstrated that AFP plays an important role in the cold tolerance of overwintering larvae. The thermal hysteresis and antifreeze activity assay of DaAFP and its mutants indicated that the more regular the DaAFP threonine-cystine-threonine (TXT) motif, the stronger the antifreeze activity. These results suggest that DaAFP plays an essential role as a biological cryoprotectant in overwintering D. armandi larvae and provides a theoretical basis for new pest control methods.
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Affiliation(s)
- Danyang Fu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- College of Forestry, Northwest A&F University, Yangling, Shaanxi, China
| | - Yaya Sun
- College of Forestry, Northwest A&F University, Yangling, Shaanxi, China
| | - Haiming Gao
- College of Forestry, Northwest A&F University, Yangling, Shaanxi, China
| | - Bin Liu
- College of Forestry, Northwest A&F University, Yangling, Shaanxi, China
| | - Xiaotong Kang
- College of Forestry, Northwest A&F University, Yangling, Shaanxi, China
| | - Hui Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
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38
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Hwang J, Kim B, Lee MJ, Kim EJ, Cho SM, Lee SG, Han SJ, Kim K, Lee JH, Do H. Importance of rigidity of ice-binding protein (FfIBP) for hyperthermal hysteresis activity and microbial survival. Int J Biol Macromol 2022; 204:485-499. [PMID: 35149098 DOI: 10.1016/j.ijbiomac.2022.02.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 02/05/2022] [Accepted: 02/07/2022] [Indexed: 01/18/2023]
Abstract
Ice-binding proteins (IBPs) are well-characterized proteins responsible for the cold-adaptation mechanisms. Despite extensive structural and biological investigation of IBPs and antifreeze proteins, only a few studies have considered the relationship between protein stabilization and thermal hysteresis (TH) activity as well as the implication of hyperactivity. Here, we investigated the important role of the head capping region in stabilization and the hyper-TH activity of FfIBP using molecular dynamics simulation. Data comparison revealed that residues on the ice-binding site of the hyperactive FfIBP are immobilized, which could be correlated with TH activity. Further comparison analysis indicated the disulfide bond in the head region is mainly involved in protein stabilization and is crucial for hyper-TH activity. This finding could also be generalized to known hyperactive IBPs. Furthermore, in mimicking the physiological conditions, bacteria with membrane-anchored FfIBP formed brine pockets in a TH activity-dependent manner. Cells with a higher number of TH-active IBPs showed an increased number of brine pockets, which may be beneficial for short- and long-term survival in cold environments by reducing the salt concentration. The newly identified conditions for hyper-TH activity and their implications on bacterial survival provide insights into novel mechanistic aspects of cold adaptation in polar microorganisms.
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Affiliation(s)
- Jisub Hwang
- Research Unit of Cryogenic Novel Material, Korea Polar Research Institute, Incheon 21990, Republic of Korea; Department of Polar Sciences, University of Science and Technology, Incheon 21990, Republic of Korea
| | - Bomi Kim
- Research Unit of Cryogenic Novel Material, Korea Polar Research Institute, Incheon 21990, Republic of Korea; Department of Polar Sciences, University of Science and Technology, Incheon 21990, Republic of Korea
| | - Min Ju Lee
- Research Unit of Cryogenic Novel Material, Korea Polar Research Institute, Incheon 21990, Republic of Korea
| | - Eun Jae Kim
- Division of Life Sciences, Korea Polar Research Institute, Incheon 21990, Republic of Korea
| | - Sung Mi Cho
- Division of Life Sciences, Korea Polar Research Institute, Incheon 21990, Republic of Korea
| | - Sung Gu Lee
- Research Unit of Cryogenic Novel Material, Korea Polar Research Institute, Incheon 21990, Republic of Korea; Department of Polar Sciences, University of Science and Technology, Incheon 21990, Republic of Korea
| | - Se Jong Han
- Department of Polar Sciences, University of Science and Technology, Incheon 21990, Republic of Korea; Division of Life Sciences, Korea Polar Research Institute, Incheon 21990, Republic of Korea
| | - Kitae Kim
- Research Unit of Cryogenic Novel Material, Korea Polar Research Institute, Incheon 21990, Republic of Korea; Department of Polar Sciences, University of Science and Technology, Incheon 21990, Republic of Korea.
| | - Jun Hyuck Lee
- Research Unit of Cryogenic Novel Material, Korea Polar Research Institute, Incheon 21990, Republic of Korea; Department of Polar Sciences, University of Science and Technology, Incheon 21990, Republic of Korea.
| | - Hackwon Do
- Research Unit of Cryogenic Novel Material, Korea Polar Research Institute, Incheon 21990, Republic of Korea; Department of Polar Sciences, University of Science and Technology, Incheon 21990, Republic of Korea.
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39
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Lukas M, Schwidetzky R, Eufemio RJ, Bonn M, Meister K. Toward Understanding Bacterial Ice Nucleation. J Phys Chem B 2022; 126:1861-1867. [PMID: 35084861 PMCID: PMC8919256 DOI: 10.1021/acs.jpcb.1c09342] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Bacterial ice nucleators
(INs) are among the most effective ice
nucleators known and are relevant for freezing processes in agriculture,
the atmosphere, and the biosphere. Their ability to facilitate ice
formation is due to specialized ice-nucleating proteins (INPs) anchored
to the outer bacterial cell membrane, enabling the crystallization
of water at temperatures up to −2 °C. In this Perspective,
we highlight the importance of functional aggregation of INPs for
the exceptionally high ice nucleation activity of bacterial ice nucleators.
We emphasize that the bacterial cell membrane, as well as environmental
conditions, is crucial for a precise functional INP aggregation. Interdisciplinary
approaches combining high-throughput droplet freezing assays with
advanced physicochemical tools and protein biochemistry are needed
to link changes in protein structure or protein–water interactions
with changes on the functional level.
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Affiliation(s)
- Max Lukas
- Max Planck Institute for Polymer Research, 55128 Mainz, Germany
| | | | | | - Mischa Bonn
- Max Planck Institute for Polymer Research, 55128 Mainz, Germany
| | - Konrad Meister
- Max Planck Institute for Polymer Research, 55128 Mainz, Germany.,University of Alaska Southeast, Juneau, Alaska 99801, United States
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40
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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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41
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Wu X, Yao F, Zhang H, Li J. Antifreeze proteins and their biomimetics for cell cryopreservation: Mechanism, function and application-A review. Int J Biol Macromol 2021; 192:1276-1291. [PMID: 34634336 DOI: 10.1016/j.ijbiomac.2021.09.211] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/30/2021] [Accepted: 09/30/2021] [Indexed: 12/26/2022]
Abstract
Cell-based therapy is a promising technology for intractable diseases and health care applications, in which cryopreservation has become an essential procedure to realize the production of therapeutic cells. Ice recrystallization is the major factor that affects the post-thaw viability of cells. As a typical series of biomacromolecules with ice recrystallization inhibition (IRI) activity, antifreeze proteins (AFPs) have been employed in cell cryopreservation. Meanwhile, synthesized materials with IRI activity have emerged in the name of biomimetics of AFPs to expand their availability and practicality. However, fabrication of AFPs mimetics is in a chaotic period. There remains little commonality among different AFPs mimetics, then it is difficult to set guidelines on their design. With no doubt, a comprehensive understanding on the antifreezing mechanism of AFPs in molecular level will enable us to rebuild the function of AFPs, and provide convenience to clarify the relationship between structure and function of these early stage biomimetics. In this review, we would discuss those previously reported biomimetics to summarize their structure characteristics concerning the IRI activity and attempt to develop a roadmap for guiding the design of novel AFPs mimetics.
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Affiliation(s)
- Xiaojun Wu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Fanglian Yao
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Frontiers Science Center for Synthetic Biology, Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, China
| | - Hong Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Frontiers Science Center for Synthetic Biology, Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, China.
| | - Junjie Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Frontiers Science Center for Synthetic Biology, Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, China.
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42
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Madzharova F, Bregnhøj M, Chatterley AS, Løvschall KB, Drace T, Andersen Dreyer LS, Boesen T, Weidner T. Electrostatics Trigger Interfacial Self-Assembly of Bacterial Ice Nucleators. Biomacromolecules 2021; 23:505-512. [PMID: 34846123 DOI: 10.1021/acs.biomac.1c01217] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ice active bacteria can catalyze water freezing at high subzero temperatures using ice nucleating proteins (INPs) located at their outer cell walls. INPs are the most effective ice nucleators known and are of significant interest for agriculture, climate research, and freeze/antifreeze technologies. The aggregation of INPs into large ice nucleation sites is a key step for effective ice nucleation. It has been proposed that ice active bacteria can drive the aggregation of INPs and thereby trigger ice nucleation. However, the mechanism of INP aggregate assembly and the molecular processes behind the activation are still unclear. Both biochemical pathways and activation through electrostatics have been proposed based on experiments with lysed ice active bacteria. For a more direct view on the assembly of INPs, we follow the structure and water interactions of a synthetic model INP of the well-studied ice bacterium Pseudomonas syringae at the air-water interface as a function of the subphase pH. By combining sum frequency generation spectroscopy with two-dimensional infrared spectra, we conclude that self-assembly and electrostatic interactions drive the formation of ordered INP structures capable of aligning interfacial water.
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Affiliation(s)
- Fani Madzharova
- Department of Chemistry, Aarhus University, Aarhus C 8000, Denmark
| | - Mikkel Bregnhøj
- Department of Chemistry, Aarhus University, Aarhus C 8000, Denmark
| | | | | | - Taner Drace
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus C 8000, Denmark.,Interdisciplinary Nanoscience Center-iNano, Aarhus University, Aarhus C 8000, Denmark
| | | | - Thomas Boesen
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus C 8000, Denmark.,Interdisciplinary Nanoscience Center-iNano, Aarhus University, Aarhus C 8000, Denmark
| | - Tobias Weidner
- Department of Chemistry, Aarhus University, Aarhus C 8000, Denmark
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43
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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: 30] [Impact Index Per Article: 10.0] [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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44
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Roterman I, Stapor K, Fabian P, Konieczny L. In Silico Modeling of the Influence of Environment on Amyloid Folding Using FOD-M Model. Int J Mol Sci 2021; 22:10587. [PMID: 34638925 PMCID: PMC8508659 DOI: 10.3390/ijms221910587] [Citation(s) in RCA: 7] [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: 08/27/2021] [Revised: 09/24/2021] [Accepted: 09/25/2021] [Indexed: 11/17/2022] Open
Abstract
The role of the environment in amyloid formation based on the fuzzy oil drop model (FOD) is discussed here. This model assumes that the hydrophobicity distribution within a globular protein is consistent with a 3D Gaussian (3DG) distribution. Such a distribution is interpreted as the idealized effect of the presence of a polar solvent-water. A chain with a sequence of amino acids (which are bipolar molecules) determined by evolution recreates a micelle-like structure with varying accuracy. The membrane, which is a specific environment with opposite characteristics to the polar aquatic environment, directs the hydrophobic residues towards the surface. The modification of the FOD model to the FOD-M form takes into account the specificity of the cell membrane. It consists in "inverting" the 3DG distribution (complementing the Gaussian distribution), which expresses the exposure of hydrophobic residues on the surface. It turns out that the influence of the environment for any protein (soluble or membrane-anchored) is the result of a consensus factor expressing the participation of the polar environment and the "inverted" environment. The ratio between the proportion of the aqueous and the "reversed" environment turns out to be a characteristic property of a given protein, including amyloid protein in particular. The structure of amyloid proteins has been characterized in the context of prion, intrinsically disordered, and other non-complexing proteins to cover a wider spectrum of molecules with the given characteristics based on the FOD-M model.
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Affiliation(s)
- Irena Roterman
- Department of Bioinformatics and Telemedicine, Medical College, Jagiellonian University, Medyczna 7, 30-688 Kraków, Poland
| | - Katarzyna Stapor
- Institute of Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland; (K.S.); (P.F.)
| | - Piotr Fabian
- Institute of Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland; (K.S.); (P.F.)
| | - Leszek Konieczny
- Chair of Medical Biochemistry, Medical College, Jagiellonian University, Kopernika 7, 31-034 Kraków, Poland;
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45
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Li R, Elliott WA, Clark RJ, Sutjianto JG, Rioux RM, Palmer JC, Rimer JD. Factors controlling the molecular modification of one-dimensional zeolites. Phys Chem Chem Phys 2021; 23:18610-18617. [PMID: 34612398 DOI: 10.1039/d1cp02619d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Interactions between organic molecules and inorganic materials are ubiquitous in many applications and often play significant roles in directing pathways of crystallization. It is frequently debated whether kinetics or thermodynamics plays a more prominent role in the ability of molecular modifiers to impact crystal nucleation and growth processes. In the case of nanoporous zeolites, approaches in rational design often capitalize on the ability of organics, used as either modifiers or structure-directing agents, to markedly impact the physicochemical properties of zeolites. It has been demonstrated for multiple topologies that modifier-zeolite interactions can alter crystal size and morphology, yet few studies have distinguished the roles of thermodynamics and kinetics. We use a combination of calorimetry and molecular modeling to estimate the binding energies of organics on zeolite surfaces and correlate these results with synthetic trends in crystal morphology. Our findings reveal unexpectedly small energies of interaction for a range of modifiers with two zeolite structures, indicating the effect of organics on zeolite crystal surface free energy is minor and kinetic factors most likely govern growth modification.
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Affiliation(s)
- Rui Li
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Environmental Chemical Engineering, Beijing University of Technology, Beijing 100124, P. R. China
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46
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Arai T, Yamauchi A, Miura A, Kondo H, Nishimiya Y, Sasaki YC, Tsuda S. Discovery of Hyperactive Antifreeze Protein from Phylogenetically Distant Beetles Questions Its Evolutionary Origin. Int J Mol Sci 2021; 22:3637. [PMID: 33807342 PMCID: PMC8038014 DOI: 10.3390/ijms22073637] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 03/28/2021] [Accepted: 03/28/2021] [Indexed: 11/16/2022] Open
Abstract
Beetle hyperactive antifreeze protein (AFP) has a unique ability to maintain a supercooling state of its body fluids, however, less is known about its origination. Here, we found that a popular stag beetle Dorcus hopei binodulosus (Dhb) synthesizes at least 6 isoforms of hyperactive AFP (DhbAFP). Cold-acclimated Dhb larvae tolerated -5 °C chilled storage for 24 h and fully recovered after warming, suggesting that DhbAFP facilitates overwintering of this beetle. A DhbAFP isoform (~10 kDa) appeared to consist of 6-8 tandem repeats of a 12-residue consensus sequence (TCTxSxNCxxAx), which exhibited 3 °C of high freezing point depression and the ability of binding to an entire surface of a single ice crystal. Significantly, these properties as well as DNA sequences including the untranslated region, signal peptide region, and an AFP-encoding region of Dhb are highly similar to those identified for a known hyperactive AFP (TmAFP) from the beetle Tenebrio molitor (Tm). Progenitor of Dhb and Tm was branched off approximately 300 million years ago, so no known evolution mechanism hardly explains the retainment of the DNA sequence for such a lo-ng divergence period. Existence of unrevealed gene transfer mechanism will be hypothesized between these two phylogenetically distant beetles to acquire this type of hyperactive AFP.
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Affiliation(s)
- Tatsuya Arai
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan; (T.A.); (A.M.); (H.K.); (Y.N.)
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan;
| | - Akari Yamauchi
- Graduate School of Life Sciences, Hokkaido University, Sapporo 060-0810, Japan;
| | - Ai Miura
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan; (T.A.); (A.M.); (H.K.); (Y.N.)
| | - Hidemasa Kondo
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan; (T.A.); (A.M.); (H.K.); (Y.N.)
- Graduate School of Life Sciences, Hokkaido University, Sapporo 060-0810, Japan;
| | - Yoshiyuki Nishimiya
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan; (T.A.); (A.M.); (H.K.); (Y.N.)
| | - Yuji C. Sasaki
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan;
- OPERANDO Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8563, Japan
| | - Sakae Tsuda
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan; (T.A.); (A.M.); (H.K.); (Y.N.)
- Graduate School of Life Sciences, Hokkaido University, Sapporo 060-0810, Japan;
- OPERANDO Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8563, Japan
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47
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Khan NMMU, Arai T, Tsuda S, Kondo H. Characterization of microbial antifreeze protein with intermediate activity suggests that a bound-water network is essential for hyperactivity. Sci Rep 2021; 11:5971. [PMID: 33727595 PMCID: PMC7966756 DOI: 10.1038/s41598-021-85559-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 03/03/2021] [Indexed: 12/27/2022] Open
Abstract
Antifreeze proteins (AFPs) inhibit ice growth by adsorbing onto specific ice planes. Microbial AFPs show diverse antifreeze activity and ice plane specificity, while sharing a common molecular scaffold. To probe the molecular mechanisms responsible for AFP activity, we here characterized the antifreeze activity and crystal structure of TisAFP7 from the snow mold fungus Typhula ishikariensis. TisAFP7 exhibited intermediate activity, with the ability to bind the basal plane, compared with a hyperactive isoform TisAFP8 and a moderately active isoform TisAFP6. Analysis of the TisAFP7 crystal structure revealed a bound-water network arranged in a zigzag pattern on the surface of the protein's ice-binding site (IBS). While the three AFP isoforms shared the water network pattern, the network on TisAFP7 IBS was not extensive, which was likely related to its intermediate activity. Analysis of the TisAFP7 crystal structure also revealed the presence of additional water molecules that form a ring-like network surrounding the hydrophobic side chain of a crucial IBS phenylalanine, which might be responsible for the increased adsorption of AFP molecule onto the basal plane. Based on these observations, we propose that the extended water network and hydrophobic hydration at IBS together determine the TisAFP activity.
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Affiliation(s)
- N M-Mofiz Uddin Khan
- Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan.,Department of Chemistry, Dhaka University of Engineering and Technology, Gazipur Gazipur, 1700, Bangladesh
| | - Tatsuya Arai
- Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Sakae Tsuda
- Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan.,Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1, Tsukisamu-Higashi, Toyohira, Sapporo, Hokkaido, 062-8517, Japan.,OPERANDO Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8563, Japan
| | - Hidemasa Kondo
- Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan. .,Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1, Tsukisamu-Higashi, Toyohira, Sapporo, Hokkaido, 062-8517, Japan.
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48
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Crystal structure of an insect antifreeze protein reveals ordered waters on the ice-binding surface. Biochem J 2021; 477:3271-3286. [PMID: 32794579 DOI: 10.1042/bcj20200539] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/10/2020] [Accepted: 08/14/2020] [Indexed: 11/17/2022]
Abstract
Antifreeze proteins (AFPs) are characterized by their ability to adsorb to the surface of ice crystals and prevent any further crystal growth. AFPs have independently evolved for this purpose in a variety of organisms that encounter the threat of freezing, including many species of polar fish, insects, plants and microorganisms. Despite their diverse origins and structures, it has been suggested that all AFPs can organize ice-like water patterns on one side of the protein (the ice-binding site) that helps bind the AFP to ice. Here, to test this hypothesis, we have solved the crystal structure at 2.05 Å resolution of an AFP from the longhorn beetle, Rhagium mordax with five molecules in the unit cell. This AFP is hyperactive, and its crystal structure resembles that of the R. inquisitor ortholog in having a β-solenoid fold with a wide, flat ice-binding surface formed by four parallel rows of mainly Thr residues. The key difference between these structures is that the R. inquisitor AFP crystallized with its ice-binding site (IBS) making protein-protein contacts that limited the surface water patterns. Whereas the R. mordax AFP crystallized with the IBSs exposed to solvent enabling two layers of unrestricted ordered surface waters to be seen. These crystal waters make close matches to ice lattice waters on the basal and primary prism planes.
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49
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Roeters SJ, Golbek TW, Bregnhøj M, Drace T, Alamdari S, Roseboom W, Kramer G, Šantl-Temkiv T, Finster K, Pfaendtner J, Woutersen S, Boesen T, Weidner T. Ice-nucleating proteins are activated by low temperatures to control the structure of interfacial water. Nat Commun 2021; 12:1183. [PMID: 33608518 PMCID: PMC7895962 DOI: 10.1038/s41467-021-21349-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 01/22/2021] [Indexed: 11/17/2022] Open
Abstract
Ice-nucleation active (INA) bacteria can promote the growth of ice more effectively than any other known material. Using specialized ice-nucleating proteins (INPs), they obtain nutrients from plants by inducing frost damage and, when airborne in the atmosphere, they drive ice nucleation within clouds, which may affect global precipitation patterns. Despite their evident environmental importance, the molecular mechanisms behind INP-induced freezing have remained largely elusive. We investigate the structural basis for the interactions between water and the ice-nucleating protein InaZ from the INA bacterium Pseudomonas syringae. Using vibrational sum-frequency generation (SFG) and two-dimensional infrared spectroscopy, we demonstrate that the ice-active repeats of InaZ adopt a β-helical structure in solution and at water surfaces. In this configuration, interaction between INPs and water molecules imposes structural ordering on the adjacent water network. The observed order of water increases as the interface is cooled to temperatures close to the melting point of water. Experimental SFG data combined with molecular-dynamics simulations and spectral calculations show that InaZ reorients at lower temperatures. This reorientation can enhance water interactions, and thereby the effectiveness of ice nucleation. Ice-nucleating proteins promote ice formation at high sub-zero temperatures, but the mechanism is still unclear. The authors investigate a model ice-nucleating protein at the air-water interface using vibrational sum frequency generation spectroscopy and simulations, revealing its reorientation at low temperatures, which increases contact with water molecules and promotes their ordering.
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Affiliation(s)
- Steven J Roeters
- Department of Chemistry, Aarhus University, Aarhus C, Denmark.,Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | | | - Mikkel Bregnhøj
- Department of Chemistry, Aarhus University, Aarhus C, Denmark
| | - Taner Drace
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus C, Denmark
| | - Sarah Alamdari
- Department of Chemical Engineering, University of Washington, Seattle, WA, USA
| | - Winfried Roseboom
- Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - Gertjan Kramer
- Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - Tina Šantl-Temkiv
- Department of Biology, Aarhus University, Aarhus C, Denmark.,The Stellar Astrophysics Centre - SAC, Department of Physics and Astronomy, Aarhus University, Aarhus C, Denmark
| | - Kai Finster
- Department of Biology, Aarhus University, Aarhus C, Denmark.,The Stellar Astrophysics Centre - SAC, Department of Physics and Astronomy, Aarhus University, Aarhus C, Denmark
| | - Jim Pfaendtner
- Department of Chemical Engineering, University of Washington, Seattle, WA, USA
| | - Sander Woutersen
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - Thomas Boesen
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus C, Denmark.,Interdisciplinary Nanoscience Center - iNano, Aarhus University, Aarhus C, Denmark
| | - Tobias Weidner
- Department of Chemistry, Aarhus University, Aarhus C, Denmark. .,Department of Chemical Engineering, University of Washington, Seattle, WA, USA. .,Interdisciplinary Nanoscience Center - iNano, Aarhus University, Aarhus C, Denmark.
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Jian Y, Handschuh-Wang S, Zhang J, Lu W, Zhou X, Chen T. Biomimetic anti-freezing polymeric hydrogels: keeping soft-wet materials active in cold environments. MATERIALS HORIZONS 2021; 8:351-369. [PMID: 34821259 DOI: 10.1039/d0mh01029d] [Citation(s) in RCA: 118] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
As one of the most outstanding materials, the analysis of the structure and function of hydrogels has been extensively carried out to tailor and adapt them to various fields of application. The high water content, which is beneficial for plenty of applications in the biomedical setting, prevents the adoption of hydrogels in flexible electronics and sensors in real life applications, because hydrogels lose their excellent properties, including conductivity, transparency, flexibility, etc., upon freezing at sub-zero temperatures. Therefore, depressing the liquid-solid phase transition temperature is a powerful means to expand the application scope of hydrogels, and will benefit the chemical engineering and materials science communities. This review summarizes the recent research progress of anti-freezing hydrogels. At first, approaches for the generation of anti-freezing (hydro)gels are introduced and their anti-freezing mechanisms and performances are briefly discussed. These approaches are either based on addition of salts, alcohols (cryoprotectants and organohydrogels), and ionic liquids (ionogels), modification of the polymer network or a combination of several techniques. Then, a concise overview of applications leveraged by the widened temperature resistance is provided and future research areas and developments are envisaged.
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Affiliation(s)
- Yukun Jian
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China.
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