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Structural Basis for the Inhibition of the RNA-Dependent RNA Polymerase from SARS-CoV-2 by Remdesivir

By Wanchao Yin, Chunyou Mao, Xiaodong Luan, Dan-Dan Shen, Qingya Shen, Haixia Su, Xiaoxi Wang, Fulai Zhou, Wenfeng Zhao, Minqi Gao, Shenghai Chang, Yuan-Chao Xie, Guanghui Tian, He-Wei Jiang, Sheng-Ce Tao, Jingshan Shen, Yi Jiang, Ruotian Jiang, H. Eric Xu, Shuyang Zhang, Yan Zhang, H. Eric Xu

Posted 09 Apr 2020
bioRxiv DOI: 10.1101/2020.04.08.032763 (published DOI: 10.1126/science.abc1560)

The pandemic of Corona Virus Disease 2019 (COVID-19) caused by SARS-CoV-2 has become a global crisis. The replication of SARS-CoV-2 requires the viral RNA-dependent RNA polymerase (RdRp), a direct target of the antiviral drug, Remdesivir. Here we report the structure of the SARS-CoV-2 RdRp either in the apo form or in complex with a 50-base template-primer RNA and Remdesivir at a resolution range of 2.5-2.8 Å. The complex structure reveals that the partial double-stranded RNA template is inserted into the central channel of the RdRp where Remdesivir is incorporated into the first replicated base pair and terminates the chain elongation. Our structures provide critical insights into the working mechanism of viral RNA replication and a rational template for drug design to combat the viral infection. ### Competing Interest Statement The authors have declared no competing interest.

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