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CAS OpenIR  > 中科院上海应用物理研究所2011-2017年  > 期刊论文
题名:
Janus effect of antifreeze proteins on ice nucleation
作者: Liu, K; Wang, CL; Ma, J; Shi, GS; Yao, X; Fang, HP; Song, YL; Wang, JJ
刊名: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
出版日期: 2016
卷号: 113, 期号:51, 页码:14739-14744
关键词: antifreeze proteins ; ice nucleation ; Janus effect ; interfacial water ; selective tethering
DOI: 10.1073/pnas.1614379114
通讯作者: Wang, JJ (reprint author), Chinese Acad Sci, Inst Chem, Key Lab Green Printing, Beijing 100190, Peoples R China. ; Wang, JJ (reprint author), Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China. ; Wang, CL (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Div Interfacial Water, Shanghai 201800, Peoples R China. ; Wang, CL (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China.
文章类型: 期刊论文
英文摘要: The mechanism of ice nucleation at the molecular level remains largely unknown. Nature endows antifreeze proteins (AFPs) with the unique capability of controlling ice formation. However, the effect of AFPs on ice nucleation has been under debate. Here we report the observation of both depression and promotion effects of AFPs on ice nucleation via selectively binding the ice-binding face (IBF) and the non-ice-binding face (NIBF) of AFPs to solid substrates. Freezing temperature and delay time assays show that ice nucleation is depressed with the NIBF exposed to liquid water, whereas ice nucleation is facilitated with the IBF exposed to liquid water. The generality of this Janus effect is verified by investigating three representative AFPs. Molecular dynamics simulation analysis shows that the Janus effect can be established by the distinct structures of the hydration layer around IBF and NIBF. Our work greatly enhances the understanding of the mechanism of AFPs at the molecular level and brings insights to the fundamentals of heterogeneous ice nucleation.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000390044900063
ISSN号: 0027-8424
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26554
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Liu, K,Wang, CL,Ma, J,et al. Janus effect of antifreeze proteins on ice nucleation[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2016-01-01,113(51):14739-14744.
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