Plays an essential role in the inhibition of host immune response. Prevents the establishment of cellular antiviral state by blocking interferon-alpha/beta (IFN-alpha/beta) production and signaling pathway. Interacts with host IFIH1/MDA5 and DHX58/LGP2 to inhibit the transduction pathway involved in the activation of IFN-beta promoter, thus protecting the virus against cell antiviral state. Blocks the type I interferon signaling pathway by interacting with host TYK2 and thereby inhibiting downstream STAT1 and STAT2 phosphorylation (By similarity). Interacts with host IFIH1/MDA5 and DHX58/LGP2. Interacts with host TYK2; this interaction inhibits the type I interferon signaling pathway (By similarity). 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 Q03335). Highly virulent strain of Rinderpest virus can blocks the phosphorylation of host JAK1 kinase, thereby blocking the type II interferon signaling as well. Belongs to the paramyxoviruses V protein family.