A trimeric hydrophobic zipper mediates the intramembrane assembly of SARS-CoV-2 spike.
A trimeric hydrophobic zipper mediates the intramembrane assembly of SARS-CoV-2 spike.
复制标题
三聚体疏水拉链介导 SARS-CoV-2 刺突的膜内组装。
DOI:
10.1101/2021.04.09.439203
复制
发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Chou,JamesJ
中科院分区:
文献类型:
--
作者:
Fu,Qingshan;Chou,JamesJ
The S protein of SARS-CoV-2 is a type I membrane protein that mediates membrane fusion and viral entry. A vast amount of structural information is available for the ectodomain of S, a primary target by the host immune system, but much less is known regarding its transmembrane domain (TMD) and its membrane-proximal regions. Here, we determined the NMR structure of the S protein TMD in bicelles that closely mimic a lipid bilayer. The TMD structure is a transmembrane α-helix (TMH) trimer that assembles spontaneously in a membrane. The trimer structure shows an extensive hydrophobic core along the 3-fold axis that resembles that of a trimeric leucine/isoleucine zipper, but with tetrad, not heptad, repeats. The trimeric core is strong in bicelles, resisting hydrogen–deuterium exchange for weeks. Although highly stable, structural guided mutagenesis identified single mutations that can completely dissociate the TMD trimer. Multiple studies have shown that the membrane anchors of viral fusion proteins can form highly specific oligomers, but the exact function of these oligomers remains unclear. Our findings should guide future experiments to address the above question for SARS coronaviruses.
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DOI:
10.1152/ajpcell.1984.247.1.c3
发表时间:
1984-07
期刊:
The American journal of physiology
影响因子:
--
作者:
J. Bijman;P. Quinton
通讯作者:
J. Bijman;P. Quinton
影响因子:
--
作者:
T. Akiyama;H. Fozzard
通讯作者:
H. Fozzard
影响因子:
--
作者:
M. Gray;A. Harris;L. Coleman;J. R. Greenwell;B. Argent
通讯作者:
B. Argent
影响因子:
64.8
作者:
Ming Li;J. D. McCann;Carole M. Liedtket;A. Nairn;P. Greengard;M. Welsh
通讯作者:
M. Welsh
DOI:
--
发表时间:
1988
期刊:
影响因子:
--
作者:
A. Beaudet
通讯作者:
A. Beaudet