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Protein Kinase R (PKR) inhibits translation initiation following double-stranded RNA (dsRNA) binding and thereby represses viral replication. Human cytomegalovirus (HCMV) encodes two noncanonical dsRNA binding proteins, IRS1 and TRS1, and the expression of at least one of these PKR antagonists is essential for HCMV replication. In this study, we investigated the role of dsRNA binding by TRS1 in PKR...
Viral double-stranded RNA (dsRNA) activates protein kinase R (PKR), which phosphorylates eIF2α and inhibits translation. In response, viruses have evolved various strategies to evade the antiviral impact of PKR. We investigated whether guinea pig cytomegalovirus (GPCMV), a useful model of congenital CMV infection, encodes a gene that interferes with the PKR pathway. Using a proteomic screen, we identified...
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