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Structure of the RNA-dependent RNA polymerase from COVID-19 virus #MMPMID32277040
Gao Y; Yan L; Huang Y; Liu F; Zhao Y; Cao L; Wang T; Sun Q; Ming Z; Zhang L; Ge J; Zheng L; Zhang Y; Wang H; Zhu Y; Zhu C; Hu T; Hua T; Zhang B; Yang X; Li J; Yang H; Liu Z; Xu W; Guddat LW; Wang Q; Lou Z; Rao Z
Science 2020[May]; 368 (6492): 779-782 PMID32277040show ga
A novel coronavirus [severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2)] outbreak has caused a global coronavirus disease 2019 (COVID-19) pandemic, resulting in tens of thousands of infections and thousands of deaths worldwide. The RNA-dependent RNA polymerase [(RdRp), also named nsp12] is the central component of coronaviral replication and transcription machinery, and it appears to be a primary target for the antiviral drug remdesivir. We report the cryo-electron microscopy structure of COVID-19 virus full-length nsp12 in complex with cofactors nsp7 and nsp8 at 2.9-angstrom resolution. In addition to the conserved architecture of the polymerase core of the viral polymerase family, nsp12 possesses a newly identified beta-hairpin domain at its N terminus. A comparative analysis model shows how remdesivir binds to this polymerase. The structure provides a basis for the design of new antiviral therapeutics that target viral RdRp.