Apr 29, 2020

Molecular Basis for ADP-ribose Binding to the Macro-X Domain of SARS-CoV-2 Nsp3

BioRxiv : the Preprint Server for Biology
Daniel ZivkovicN. R. Silvaggi


The virus that causes COVID-19, SARS-CoV-2, has a large RNA genome that encodes numerous pro-teins that might be targets for antiviral drugs. Some of these proteins, such as the RNA-dependent RNA polymers, helicase and main protease, are well con-served between SARS-CoV-2 and the original SARS virus, but several others are not. This study examines one of the proteins encoded by SARS-CoV-2 that is most different, a macrodomain of nonstructural protein 3 (nsp3). Although 26% of the amino acids in this SARS-CoV-2 macrodomain differ from those seen in other coronaviruses, bio-chemical and structural data reveal that the protein retains the ability to bind ADP-ribose, which is an important characteristic of beta coronaviruses, and potential therapeutic target.

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Mentioned in this Paper

Fisher's Exact Test
Negative Selection
Population Group

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