A novel mutation in murine hepatitis virus nsp5, the viral 3C-like proteinase, causes temperature-sensitive defects in viral growth and protein processing.

Abstract excerpt

Sequencing and reversion analysis of murine hepatitis virus (MHV) temperature-sensitive (ts) viruses has identified putative ts mutations in the replicase nonstructural proteins (nsp's) of these coronaviruses. In this study, reverse transcriptase PCR sequencing of the RNA genome of an isolate of the MHV ts virus Alb ts6, referred to as Alb/ts/nsp5/V148A, identified a putative ts mutation in nsp5 (T10651C,...

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