A eukayrotic protein serine-threonine phosphatase subtype that dephosphorylates a wide variety of cellular proteins. The enzyme is comprised of a catalytic subunit and regulatory subunit. Several isoforms of the protein phosphatase catalytic subunit exist due to the presence of multiple genes and the alternative splicing of their mRNAs. A large number of proteins have been shown to act as regulatory subunits for this enzyme. Many of the regulatory subunits have additional cellular functions.

Synonyms: Protein Phosphatase 1, Catalytic Subunit, beta Isoform Protein Phosphatase 1G Protein Phosphatase 1, Catalytic Subunit, gamma1 Isoform Protein Phosphatase 1C Phosphoprotein Phosphatase-1 delta Protein Phosphatase 1, Catalytic Subunit, gamma Isoform PP1c Enzyme Protein Phosphatase 1gamma Protein Phosphatase-1 Phosphoprotein Phosphatase 1 gamma 1 Protein Phosphatase-1G Phosphoprotein Phosphatase 1 delta EC 3.1.3.16 Protein Serine Threonine Phosphatase 1 beta Protein Phosphatase 1 gamma 2 Protein Phosphatase 1 Protein Phosphatase 1, Catalytic Subunit, gamma2 Isoform Protein Phosphatase 1, Regulatory Subunit Phosphatase-1 delta, Phosphoprotein Protein Phosphatase 1, Catalytic Subunit, delta Isoform Protein Phosphatase 1, Catalytic Subunit, alpha Isoform Type 1 Serine Threonine Protein Phosphatase Protein Phosphatase 1C gamma Protein Phosphatase-1 gamma 2 Protein Phosphatase-1 alpha Protein Phosphatase 1 alpha Protein Phosphatase 1, Catalytic Subunit Phosphoprotein Phosphatase-1 gamma 1 Protein-Serine-Threonine Phosphatase 1 beta Protein Phosphatase 1, Inhibitory Subunit Protein Serine-Threonine Phosphatase 1 beta