Protein phosphatase-1 (PP1; see MIM 176875) is a major cellular phosphatase that reverses serine/threonine protein phosphorylation. PPP1R14D is a PP1 inhibitor that itself is regulated by phosphorylation. PPP1R14D (Protein Phosphatase 1 Regulatory Inhibitor Subunit 14D) is a Protein Coding gene. GO annotations related to this gene include protein phosphatase inhibitor activity. An important paralog of this gene is PPP1R14A.