A type I cAMP-dependent protein kinase regulatory subunit that plays a role in confering CYCLIC AMP activation of protein kinase activity. It has a lower affinity for cAMP than the CYCLIC-AMP-DEPENDENT PROTEIN KINASE RIBETA SUBUNIT.

Synonyms: 0 PKA RIalpha RI alpha, cAMP Protein Kinase RIalpha, PKA Regulatory Subunit RIalpha, Cyclic AMP Dependent Protein Kinase Cyclic AMP-Dependent Protein Kinase RIalpha Subunit RIalpha, cAMP Protein Kinase Cyclic AMP Dependent Protein Kinase RIalpha Subunit RIalpha, Protein Kinase A Cyclic-AMP-Dependent Protein Kinase RIalpha Subunit Protein Kinase A, RIalpha Subunit Regulatory Subunit RIalpha, Cyclic-AMP-Dependent Protein Kinase