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Archives of virology

Identification of cleavage of NS5A of C-strain classical swine fever virus.


PMID 27766426

Abstract

NS5A is a multifunctional non-structural protein of classical swine fever virus (CSFV) that plays an important role in viral replication, but how it exerts its functions is unknown. Here, we report the cleavage of NS5A of the vaccine C-strain, resulting in two truncated forms (b and c). Further experiments using calpain- and caspase-family-specific inhibitors, followed by a caspase-6-specific shRNAs and inhibitor, showed that the cleavage of C-strain NS5A to produce truncated form c is mediated by caspase-6, mapping to