Like most cytoplasmic negative-sense RNA viruses, despite the paramyxoviruses complete viral RNA synthesis and replication in the cytoplasm, some viral proteins are localized in the nucleus at early stages of virus infection, such as the M protein of NiV, SeV, NDV, MeV and MuV, or the NP protein of MeV [5]. This evidence concerns the gene MYOM2 and viral infectious disease.