Ontology type: schema:ScholarlyArticle Open Access: True
2021-08-24
AUTHORSFlorian A. Jochheim, Dimitry Tegunov, Hauke S. Hillen, Jana Schmitzová, Goran Kokic, Christian Dienemann, Patrick Cramer
ABSTRACTThe coronavirus SARS-CoV-2 uses an RNA-dependent RNA polymerase (RdRp) to replicate and transcribe its genome. Previous structures of the RdRp revealed a monomeric enzyme composed of the catalytic subunit nsp12, two copies of subunit nsp8, and one copy of subunit nsp7. Here we report an alternative, dimeric form of the enzyme and resolve its structure at 5.5 Å resolution. In this structure, the two RdRps contain only one copy of nsp8 each and dimerize via their nsp7 subunits to adopt an antiparallel arrangement. We speculate that the RdRp dimer facilitates template switching during production of sub-genomic RNAs. More... »
PAGES999
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DOIhttp://dx.doi.org/10.1038/s42003-021-02529-9
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