Translocation pause of remdesivir-containing primer/template RNA duplex within SARS-CoV-2's RNA polymerase complexes.
Translocation pause of remdesivir-containing primer/template RNA duplex within SARS-CoV-2's RNA polymerase complexes.
复制标题
SARS-COV-2的RNA聚合酶复合物中含有雷氏剂的底漆/模板RNA双链体的易位暂停。
DOI:
10.3389/fmolb.2022.999291
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发表时间:
2022
影响因子:
5
通讯作者:
中科院分区:
文献类型:
--
作者:
The mechanism of remdesivir incorporation into the RNA primer by the RNA-dependent RNA polymerase (RdRp) of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) remains to be fully established at the molecular level. Here, we compare molecular dynamics (MD) simulations after incorporation of either remdesivir monophosphate (RMP) or adenosine monophosphate (AMP). We find that the Mg2+-pyrophosphate (PPi) binds more tightly to the polymerase when the added RMP is at the third primer position than in the AMP added complex. The increased affinity of Mg2+-PPi to the RMP-added primer/template (P/T) RNA duplex complex introduces a new hydrogen bond of a substituted cyano group in RMP with the K593 sidechain. The new interactions disrupt a switching mechanism of a hydrogen bond network that is essential for translocation of the P/T duplex product and for opening of a vacant NTP-binding site necessary for next primer extension. Furthermore, steric interactions between the sidechain of S861 and the 1′-cyano group of RMP at position i+3 hinders translocation of RMP to the i + 4 position, where i labels the insertion site. These findings are particularly valuable to guide the design of more effective inhibitors of SARS-CoV-2 RNA polymerase.
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影响因子:
16.6
作者:
Kokic G;Hillen HS;Tegunov D;Dienemann C;Seitz F;Schmitzova J;Farnung L;Siewert A;Höbartner C;Cramer P
通讯作者:
Cramer P
影响因子:
18.2
作者:
Byléhn F;Menéndez CA;Perez-Lemus GR;Alvarado W;de Pablo JJ
通讯作者:
de Pablo JJ
影响因子:
16
作者:
Bravo JPK;Dangerfield TL;Taylor DW;Johnson KA
通讯作者:
Johnson KA
影响因子:
64.5
作者:
Franklin, MC;Wang, JM;Steitz, TA
通讯作者:
Steitz, TA
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K