The SARS-CoV-2 Spike variant D614G favors an open conformational state.
The SARS-CoV-2 Spike variant D614G favors an open conformational state.
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DOI:
10.1126/sciadv.abf3671
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发表时间:
2021-04
期刊:
影响因子:
13.6
通讯作者:
Gnanakaran S
中科院分区:
文献类型:
--
作者:
Mansbach RA;Chakraborty S;Nguyen K;Montefiori DC;Korber B;Gnanakaran S
Symmetrization of contacts in D614G SARS-CoV-2 Spike favors greater probability of infection-capable conformation. The COVID-19 (coronavirus disease 2019) pandemic underwent a rapid transition with the emergence of a dominant viral variant (from the “D-form” to the “G-form”) that carried an amino acid substitution D614G in its “Spike” protein. The G-form is more infectious in vitro and is associated with increased viral loads in the upper airways. To gain insight into the molecular-level underpinnings of these characteristics, we used microsecond all-atom simulations. We show that changes in the protein energetics favor a higher population of infection-capable states in the G-form through release of asymmetry present in the D-form inter-protomer interactions. Thus, the increased infectivity of the G-form is likely due to a higher rate of profitable binding encounters with the host receptor. It is also predicted to be more neutralization sensitive owing to enhanced exposure of the receptor binding domain, a key target region for neutralizing antibodies. These results are critical for vaccine design.
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DOI:
10.1126/science.abe8499
发表时间:
2020-12-18
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Hou YJ;Chiba S;Halfmann P;Ehre C;Kuroda M;Dinnon KH 3rd;Leist SR;Schäfer A;Nakajima N;Takahashi K;Lee RE;Mascenik TM;Graham R;Edwards CE;Tse LV;Okuda K;Markmann AJ;Bartelt L;de Silva A;Margolis DM;Boucher RC;Randell SH;Suzuki T;Gralinski LE;Kawaoka Y;Baric RS
通讯作者:
Baric RS
影响因子:
3
作者:
Koukos, Panagiotis I.;Glykos, Nicholas M.
通讯作者:
Glykos, Nicholas M.
影响因子:
14.9
作者:
Drozdetskiy A;Cole C;Procter J;Barton GJ
通讯作者:
Barton GJ
影响因子:
4.4
作者:
JORGENSEN, WL;CHANDRASEKHAR, J;KLEIN, ML
通讯作者:
KLEIN, ML
影响因子:
4.4
作者:
ESSMANN, U;PERERA, L;PEDERSEN, LG
通讯作者:
PEDERSEN, LG