The protein encoded by this gene is a catalytic subunit of the AMP-activated protein kinase (AMPK). AMPK is a heterotrimer consisting of an alpha catalytic subunit, and non-catalytic beta and gamma subunits. AMPK is an important energy-sensing enzyme that monitors cellular energy status. In response to cellular metabolic stresses, AMPK is activated, and thus phosphorylates and inactivates acetyl-CoA carboxylase (ACC) and beta-hydroxy beta-methylglutaryl-CoA reductase (HMGCR), key enzymes involved in regulating de novo biosynthesis of fatty acid and cholesterol. Studies of the mouse counterpart suggest that this catalytic subunit may control whole-body insulin sensitivity and is necessary for maintaining myocardial energy homeostasis during ischemia.
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Protein Aliases: 5'-AMP-activated protein kinase catalytic subunit alpha-1; 5'-AMP-activated protein kinase catalytic subunit alpha-2; 5'-AMP-activated protein kinase, catalytic alpha-1 chain; 5'-AMP-activated protein kinase, catalytic alpha-2 chain; AAPK2; ACACA kinase; Acetyl-CoA carboxylase kinase; AMP -activate kinase alpha 1 subunit; AMP-activated protein kinase; AMP-activated protein kinase alpha-2 subunit variant 2; AMP-activated protein kinase alpha-2 subunit variant 3; AMP-activated protein kinase alpha-2 variant B; AMP-activated protein kinase, alpha 1 catalytic subunit; AMP-activated protein kinase, catalytic, alpha-1; AMPK alpha 1; AMPK alpha 2; AMPK alpha-1 chain; AMPK alpha-2 chain; AMPK subunit alpha-1; AMPK subunit alpha-2; AMPK-alpha-1 chain; AMPK-alpha-2 chain; HMGCR kinase; Hydroxymethylglutaryl-CoA reductase kinase; pAMPK; prkaa2; protein kinase, AMP-activated, alpha 1 catalytic subunit; protein kinase, AMP-activated, alpha 2 catalytic subunit; Tau-protein kinase PRKAA1
Gene Aliases: 2310008I11Rik; A830082D05; AI194361; AI450832; AL024255; AMPK; AMPK1; AMPK2; AMPKa1; AMPKa2; AMPKalpha1; AMPKalpha2; C130083N04Rik; PRKAA; PRKAA1; PRKAA2
Molecular Function: non-receptor serine/threonine protein kinase