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  • Title: C terminal CYS-RICH region of mumps virus structural V protein correlates with block of interferon alpha and gamma signal transduction pathway through decrease of STAT 1-alpha.
    Author: Kubota T, Yokosawa N, Yokota S, Fujii N.
    Journal: Biochem Biophys Res Commun; 2001 Apr 27; 283(1):255-9. PubMed ID: 11322797.
    Abstract:
    It has been reported that interferon (IFN)-alpha/gamma signal transduction pathway is blocked in several cell lines persistently infected with mumps virus (MV) through decrease of STAT-1alpha. Expression of the MV structural V protein (MV-V) or C terminal CYS-RICH region of the V protein (MV-Vsp) inhibited the establishment of the antivirus state induced by IFN, but not by expression of the MV-P protein. Suppression of IFN-induced STAT-1alpha, STAT-2, and IRF-9 (p48) induction was also recognized in the cells transfected with expression vector of the MV-V (pTM-V) or MV-Vsp (pTM-Vsp) protein, even though it was in the absence of the other virus protein. It is supposed that the cysteine-rich domain of V protein (Vsp) is involved in the suppression of the IFN signal transduction pathway.
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