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PKAR1A a regulatory subunit of cAMP-regulated protein kinase. The inactive form of the enzyme is composed of two regulatory chains and two catalytic chains. Activation by cAMP produces two active catalytic monomers and a regulatory dimer that binds four cAMP molecules. Four types of regulatory chains are found: I-alpha, I-beta, II-alpha, and II-beta. Their expression varies among tissues and is in some cases constitutive and in others inducible. Interacts with RFC2: the complex may be involved in cell survival. Defects in PRKAR1A are the cause of Carney complex type 1 (CNC1). CNC is a multiple neoplasia syndrome characterized by spotty skin pigmentation, cardiac and other myxomas, endocrine tumors, and psammomatous melanotic schwannomas. Note: This description may include information from UniProtKB.
Protein type: Protein kinase, regulatory subunit
Chromosomal Location of Human Ortholog: 17q24.2
Cellular Component: AMP-activated protein kinase complex; cytoplasm; cytosol; immunological synapse; membrane; protein complex
Molecular Function: cAMP-dependent protein kinase inhibitor activity; cAMP-dependent protein kinase regulator activity; protein binding; ubiquitin protein ligase binding
Biological Process: activation of protein kinase A; blood coagulation; negative regulation of activated T cell proliferation; regulation of transcription from RNA polymerase II promoter; renal water homeostasis
Disease: Acrodysostosis 1 With Or Without Hormone Resistance; Carney Complex, Type 1; Myxoma, Intracardiac; Pigmented Nodular Adrenocortical Disease, Primary, 1; Thyroid Carcinoma, Papillary
Reference #:  P10644 (UniProtKB)
Alt. Names/Synonyms: cAMP-dependent protein kinase regulatory subunit RIalpha; cAMP-dependent protein kinase type I-alpha regulatory chain; cAMP-dependent protein kinase type I-alpha regulatory subunit; CAR; CNC; CNC1; DKFZp779L0468; KAP0; MGC17251; PKR1; PPNAD1; PRKAR1; PRKAR1A; protein kinase A type 1a regulatory subunit; protein kinase, cAMP-dependent, regulatory, type I, alpha (tissue specific extinguisher 1); Tissue-specific extinguisher 1; TSE1
Gene Symbols: PRKAR1A
Molecular weight: 42,982 Da
Basal Isoelectric point: 5.27  Predict pI for various phosphorylation states
CST Pathways:  Actin Dynamics  |  AMPK Signaling  |  GPCR Signaling to MAPKs  |  Growth And Differentiation Control by MAPKs  |  Hedgehog Signaling  |  Inhibition of Apoptosis  |  Insulin Receptor Signaling  |  Microtubule Dynamics  |  Mitochondrial Control of Apoptosis  |  Parkinson's Disease
Protein-Specific Antibodies or siRNAs from Cell Signaling Technology® Total Proteins
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