Protein phosphatase inhibitor-1, Protein phosphatase inhibitor, Protein phosphatase inhibitor-1 Protein phosphatase inhibitor 1, I 1, I1, Inhibitor 1, IPP 1, IPP1, PPP1R1A, Protein phosphatase 1 regulatory (inhibitor) subunit 1A, Protein phosphatase 1 regulatory subunit 1A.