Subnanometer structures of HIV-1 envelope trimers on aldrithiol-2-inactivated virus particles.
Subnanometer structures of HIV-1 envelope trimers on aldrithiol-2-inactivated virus particles.
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Aldrithiol-2 灭活病毒颗粒上 HIV-1 包膜三聚体的亚纳米结构
DOI:
10.1038/s41594-020-0452-2
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发表时间:
2020-08
影响因子:
16.8
通讯作者:
Liu J
中科院分区:
文献类型:
--
作者:
Li Z;Li W;Lu M;Bess J Jr;Chao CW;Gorman J;Terry DS;Zhang B;Zhou T;Blanchard SC;Kwong PD;Lifson JD;Mothes W;Liu J
The HIV-1 envelope glycoprotein (Env) trimer, comprised of gp120 and gp41 subunits, mediates entry into cells. Recombinant Env trimers have been studied structurally, but characterization of Env embedded in intact virus membranes has been limited to low resolution. Here, we deploy cryo-electron tomography and sub-tomogram averaging to determine the structures of Env trimers on aldrithiol-2 (AT-2)-inactivated virions in ligand-free, antibody-bound, and CD4-bound forms at sub-nanometer resolution. Tomographic reconstructions document molecular features consistent with high resolution structures of engineered soluble and detergent-solubilized Env trimers. One of three conformational states predicted by smFRET was not observed, potentially due to AT-2 inactivation. We did observe Env trimers to open in situ in response to CD4 with an outward movement of gp120-variable loops and an extension of a critical gp41 helix. Overall features of Env trimer embedded in AT-2 treated virions appear well-represented by current engineered trimers.
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影响因子:
48
作者:
Kucukelbir, Alp;Sigworth, Fred J.;Tagare, Hemant D.
通讯作者:
Tagare, Hemant D.
DOI:
10.1107/s2059798318009324
发表时间:
2018-09-01
期刊:
Acta crystallographica. Section D, Structural biology
影响因子:
--
作者:
Afonine PV;Klaholz BP;Moriarty NW;Poon BK;Sobolev OV;Terwilliger TC;Adams PD;Urzhumtsev A
通讯作者:
Urzhumtsev A
影响因子:
6.7
作者:
Khasnis MD;Halkidis K;Bhardwaj A;Root MJ
通讯作者:
Root MJ
影响因子:
8.8
作者:
Torrents de la Peña A;Julien JP;de Taeye SW;Garces F;Guttman M;Ozorowski G;Pritchard LK;Behrens AJ;Go EP;Burger JA;Schermer EE;Sliepen K;Ketas TJ;Pugach P;Yasmeen A;Cottrell CA;Torres JL;Vavourakis CD;van Gils MJ;LaBranche C;Montefiori DC;Desaire H;Crispin M;Klasse PJ;Lee KK;Moore JP;Ward AB;Wilson IA;Sanders RW
通讯作者:
Sanders RW
影响因子:
3
作者:
Kremer, JR;Mastronarde, DN;McIntosh, JR
通讯作者:
McIntosh, JR