Conformational reorganization of the SARS coronavirus spike following receptor binding: implications for membrane fusion.
Conformational reorganization of the SARS coronavirus spike following receptor binding: implications for membrane fusion.
复制标题
受体结合后SARS冠状病毒尖峰的构象重组:对膜融合的影响。
DOI:
10.1371/journal.pone.0001082
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发表时间:
2007-10-24
期刊:
影响因子:
3.7
通讯作者:
Booth TF
中科院分区:
文献类型:
--
作者:
Beniac DR;deVarennes SL;Andonov A;He R;Booth TF
The SARS coronavirus (SARS-CoV) spike is the largest known viral spike molecule, and shares a similar function with all class 1 viral fusion proteins. Previous structural studies of membrane fusion proteins have largely used crystallography of static molecular fragments, in isolation of their transmembrane domains. In this study we have produced purified, irradiated SARS-CoV virions that retain their morphology, and are fusogenic in cell culture. We used cryo-electron microscopy and image processing to investigate conformational changes that occur in the entire spike of intact virions when they bind to the viral receptor, angiotensin-converting enzyme 2 (ACE2). We have shown that ACE2 binding results in structural changes that appear to be the initial step in viral membrane fusion, and precisely localized the receptor-binding and fusion core domains within the entire spike. Furthermore, our results show that receptor binding and subsequent membrane fusion are distinct steps, and that each spike can bind up to three ACE2 molecules. The SARS-CoV spike provides an ideal model system to study receptor binding and membrane fusion in the native state, employing cryo-electron microscopy and single-particle image analysis.
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影响因子:
64.8
作者:
Li W;Moore MJ;Vasilieva N;Sui J;Wong SK;Berne MA;Somasundaran M;Sullivan JL;Luzuriaga K;Greenough TC;Choe H;Farzan M
通讯作者:
Farzan M
DOI:
10.1083/jcb.139.6.1455
发表时间:
1997-12-15
期刊:
The Journal of cell biology
影响因子:
--
作者:
Hernandez LD;Peters RJ;Delos SE;Young JA;Agard DA;White JM
通讯作者:
White JM
DOI:
10.1073/pnas.96.8.4319
发表时间:
1999-04-13
影响因子:
11.1
作者:
Kobe, B;Center, RJ;Poumbourios, P
通讯作者:
Poumbourios, P
影响因子:
64.5
作者:
Dimitrov DS
通讯作者:
Dimitrov DS
影响因子:
11.4
作者:
Li, WH;Zhang, CS;Sui, JH;Kuhn, JH;Moore, MJ;Luo, SW;Wong, SK;Huang, IC;Xu, KM;Vasilieva, N;Murakami, A;He, YQ;Marasco, WA;Guan, Y;Choe, HY;Farzan, M
通讯作者:
Farzan, M