Tsg101 Interacts with Herpes Simplex Virus 1 VP1/2 and Is a Substrate of VP1/2 Ubiquitin-Specific Protease Domain Activity
2013
Ubiquitination/deubiquitination of key factors represent crucial steps in the biogenesis of multivesicular body (MVB) and sorting of transmembrane proteins. We and others previously demonstrated that MVB is involved in herpes simplex virus 1 (HSV-1) envelopment and budding. Here, we report that the HSV-1 large tegument protein, VP1/2, interacts with and regulates the ubiquitination of Tsg101, a cellular protein essential in MVB formation, thus identifying the first cellular substrate of a herpesviral deubiquitinating enzyme.
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