Protein Name protein kinase cAMP-activated catalytic subunit alpha
Organism Homo sapiens
Gene ID 5566
Gene Symbol


UniProt P17612 (KAPCA_HUMAN), A0A024R7J0 (A0A024R7J0_HUMAN), A8K8B9 (A8K8B9_HUMAN)
Relationships Total Number of functionally related compound(s) : 32
Total Number of Articles : 59

protein kinase cAMP-activated catalytic subunit alpha

Gene Summary

This gene encodes one of the catalytic subunits of protein kinase A, which exists as a tetrameric holoenzyme with two regulatory subunits and two catalytic subunits, in its inactive form. cAMP causes the dissociation of the inactive holoenzyme into a dimer of regulatory subunits bound to four cAMP and two free monomeric catalytic subunits. Four different regulatory subunits and three catalytic subunits have been identified in humans. cAMP-dependent phosphorylation of proteins by protein kinase A is important to many cellular processes, including differentiation, proliferation, and apoptosis. Constitutive activation of this gene caused either by somatic mutations, or genomic duplications of regions that include this gene, have been associated with hyperplasias and adenomas of the adrenal cortex and are linked to corticotropin-independent Cushing's syndrome. Alternative splicing results in multiple transcript variants encoding different isoforms. Tissue-specific isoforms that differ at the N-terminus have been described, and these isoforms may differ in the post-translational modifications that occur at the N-terminus of some isoforms. [provided by RefSeq, Jan 2015]

  • cAMP-dependent protein kinase catalytic subunit alpha
  • PKA C-alpha
  • protein kinase A catalytic subunit
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