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A genus-specific nsp12 region impacts polymerase assembly in Alpha- and Gammacoronaviruses. | LitMetric

A genus-specific nsp12 region impacts polymerase assembly in Alpha- and Gammacoronaviruses.

bioRxiv

Department of Biochemistry, Institute for Molecular Virology, Center for Quantitative Cell Imaging, University of Wisconsin-Madison, Madison, Wisconsin 53706.

Published: July 2024

AI Article Synopsis

Article Abstract

Coronavirus relevancy for human health has surged over the past 20 years as they have a propensity for spillover into humans from animal reservoirs resulting in pandemics such as COVID-19. The diversity within the subfamily and high infection frequency in animal species worldwide creates a looming threat that calls for research across all genera within the subfamily. We sought to contribute to the limited structural knowledge within the genera and determined the structure of the viral core replication-transcription complex (RTC) from Infectious Bronchitis Virus (IBV) using single-particle cryo-EM. Comparison between our IBV structure with published RTC structures from other genera reveals structural differences across genera. Using biochemical assays, we characterized these differences and revealed their differing involvement in core RTC formation across different genera. Our findings highlight the value of cross-genera studies, as they show genera specific features in coronavirus genome replication. A broader knowledge of coronavirus replication will better prepare us for future coronavirus spillovers.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11291119PMC
http://dx.doi.org/10.1101/2024.07.23.604833DOI Listing

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