RNA replicase polyprotein

UniProtKB accession:  P10358

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Acts as a cysteine protease, methyltransferase and deubiquitinase (PubMed:22117220, PubMed:23966860, PubMed:29117247, PubMed:32732284) (Probable). The cysteine protease activity cleaves the polyprotein giving rise to mature proteins (PubMed:23966860). The methyltransferase domain is probably involved in viral RNA capping (Probable). The deubiquitylating activity counteracts the degradation of the viral polymerase mediated by the host ubiquitin-proteasome system (PubMed:22117220). The polymerase is thus stabilized and infectivity is increased (PubMed:22117220). Favors K63 poly-Ub linkage (PubMed:23345508).