Protects the virus against cell antiviral state by blocking host interferon signaling. Mechanistically, targets host phosphorylated STAT1 (phospho-STAT1) for degradation, thereby inhibiting the interferon alpha signaling pathway. Plays a role in the inhibition of host apoptosis. Interacts with and down-regulates the expression of host TXNL1. In turn, inhibits TXNL1-induced apoptosis through the BCL2-BAX-caspase 3 pathway. Inhibits host apoptosis also by negatively regulating host CacyBP/SIP. Promotes viral replication by activating the extracellular signal-regulated kinase (ERK) pathway. Interacts with host STAT1. Interacts with host TXNL1. Interacts (via C-terminus) with host CacyBP; this interaction inhibits host cell apoptosis. Partially edited. RNA editing at this position consists of an insertion of one guanine nucleotide. The sequence displayed here is the V protein, derived from the edited RNA. The unedited RNA gives rise to the P protein (AC Q06427).