Phosphoprotein Phosphatase Inhibitor (PI-1)

Phosphoprotein phosphatase inhibitor regulates the activity of phosphoprotein phosphatase I (Figure 16.12). A phosphorylated form of PI-1 is active as an inhibitor, and the dephosphorylated form is inactive. Phosphorylation of PI-1 is carried out by C, the catalytic subunit of the cAMP-dependent protein kinase.

See also: Phosphoprotein Phosphatase I, cAMP-Dependent Protein Kinase