cAMP-dependent protein kinase inhibitor alpha,cAMP-dependent protein kinase inhibitor, muscle/brain isoform,PKI-alpha,PRKACN1,protein kinase (cAMP-dependent, catalytic) inhibitor alpha.
Extremely potent competitive inhibitor of cAMP-dependent protein kinase activity, this protein interacts with the catalytic subunit of the enzyme after the cAMP-induced dissociation of its regulatory chains.