URI1 and cytomegalovirus infection: Our findings indicate that HCMV infection disrupts PP1 function through the temporal dysregulation of at least nine recognized regulatory subunits, PPP1R10, PPP1R7, YLPM1, PPP1R11, PPP1R9A, PPP1R8 (NIPP1), PPP1R9B, PPP1R12C, and URI1 (Figure 6).