PKA Inhibitor [6-22] Peptide

This peptide is a potent and competitive inhibitor of protein kinase A (PKA) with a Ki = 1.7 nM. The peptide sequence corresponds to residues 6-22 of human cAMP-dependent protein kinase inhibitor alpha (PKI-alpha) and is amidated at the C-terminus end. PKI-alpha interacts with the catalytic subunit of PKA after the cAMP-induced dissociation of its regulatory chains.