Structural basis of SARS-CoV-2 Omicron immune evasion and receptor engagement.
Structural basis of SARS-CoV-2 Omicron immune evasion and receptor engagement.
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DOI:
10.1126/science.abn8652
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发表时间:
2022-02-25
期刊:
影响因子:
56.9
通讯作者:
Veesler, David
中科院分区:
文献类型:
--
作者:
McCallum, Matthew;Czudnochowski, Nadine;Rosen, Laura E.;Zepeda, Samantha K.;Bowen, John E.;Walls, Alexandra C.;Hauser, Kevin;Joshi, Anshu;Stewart, Cameron;Dillen, Josh R.;Powell, Abigail E.;Croll, Tristan, I;Nix, Jay;Virgin, Herbert W.;Corti, Davide;Snell, Gyorgy;Veesler, David
The SARS-CoV-2 Omicron variant of concern evades antibody-mediated immunity that comes from vaccination or infection with earlier variants due to accumulation of numerous spike mutations. To understand the Omicron antigenic shift, we determined cryo-electron microscopy and X-ray crystal structures of the spike protein and the receptor-binding domain bound to the broadly neutralizing sarbecovirus monoclonal antibody (mAb) S309 (the parent mAb of sotrovimab) and to the human ACE2 receptor. We provide a blueprint for understanding the marked reduction of binding of other therapeutic mAbs that leads to dampened neutralizing activity. Remodeling of interactions between the Omicron receptor-binding domain and human ACE2 likely explains the enhanced affinity for the host receptor relative to the ancestral virus.
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影响因子:
48
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通讯作者:
Fraser JS
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64.8
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56.9
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通讯作者:
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