NM_006251.5
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NCBI GenBank Nucleotide #
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UniProt Primary Accession #
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UniProt Secondary Accession #
UniProt Related Accession #
Molecular Weight
~68kDa (A1); ~38kDa (B1); ~65kDa (G2)
NCBI Official Full Name
Homo sapiens protein kinase AMP-activated catalytic subunit alpha 1 (PRKAA1), transcript variant 1, mRNA
NCBI Official Synonym Full Names
protein kinase AMP-activated catalytic subunit alpha 1
NCBI Official Synonym Symbols
NCBI Protein Information
5'-AMP-activated protein kinase catalytic subunit alpha-1
UniProt Protein Name
5'-AMP-activated protein kinase catalytic subunit alpha-1
UniProt Synonym Protein Names
Acetyl-CoA carboxylase kinase (EC:2.7.11.27
UniProt Synonym Gene Names
NCBI Summary for AMPK
The protein encoded by this gene belongs to the ser/thr protein kinase family. It is the catalytic subunit of the 5'-prime-AMP-activated protein kinase (AMPK). AMPK is a cellular energy sensor conserved in all eukaryotic cells. The kinase activity of AMPK is activated by the stimuli that increase the cellular AMP/ATP ratio. AMPK regulates the activities of a number of key metabolic enzymes through phosphorylation. It protects cells from stresses that cause ATP depletion by switching off ATP-consuming biosynthetic pathways. Alternatively spliced transcript variants encoding distinct isoforms have been observed. [provided by RefSeq, Jul 2008]
UniProt Comments for AMPK
AMPKA1: a catalytic subunit of AMP-activated protein kinase (AMPK). Acts as an energy sensor, playing a key role in regulating cellular energy metabolism. A protein kinase of the CAMKL family whose activation is regulated by the balance between ADP/AMP/ATP, and intracellular Ca(2+) levels. Acts as a metabolic stress-sensing protein kinase switching off biosynthetic pathways when cellular ATP levels are depleted and when 5'-ADP and -AMP rise in response to fuel limitation and/or hypoxia. Activates energy-producing pathways and inhibits energy-consuming processes. Restores ATP levels in cells by switching off anabolic and switching on catabolic pathways. Activated primarily by rising ADP levels and not, as previously thought, solely by AMP. AMPK resembles an adenylate charge regulatory system in which anabolic and catabolic pathways are regulated by adenine nucleotide ratios. Acts via direct phosphorylation of a number of metabolic enzymes and transcription regulators. Activated by at least two distinct upstream kinases: the tumor suppressor LKB1 and CaMKK2. Also acts as a regulator of cellular polarity by remodeling the actin cytoskeleton, probably by indirectly activating myosin. AMPK is a heterotrimer of an alpha catalytic subunit (AMPKA1 or -2), a beta (AMPKB1 or -2) and a gamma non-catalytic subunit (AMPKG1, -2 or -3). Different possible combinations of subunits give rise to 12 different holoenzymes. Binding of ADP or AMP to non-catalytic gamma subunit (PRKAG1, -2 or -3) results in allosteric activation. AMPK is activated by antihyperglycemic drug metformin, a drug prescribed to patients with type 2 diabetes: in vivo, metformin seems to mainly inhibit liver gluconeogenesis. However, metformin can be used to activate AMPK in muscle and other cells in culture or ex vivo. Selectively inhibited by compound C (6-[4-(2-Piperidin-1-yl-ethoxy)-phenyl)]-3-pyridin-4-yl-pyyrazolo[1,5-a] pyrimidine. Activated by resveratrol, a natural polyphenol present in red wine, and S17834, a synthetic polyphenol. Two isoforms of the human protein are produced by alternative splicing.
Protein type: AMPK subfamily; Autophagy; CAMK group; CAMKL family; EC 2.7.11.1; EC 2.7.11.26; EC 2.7.11.27; EC 2.7.11.31; Kinase, protein; Protein kinase, CAMK; Protein kinase, Ser/Thr (non-receptor)
Chromosomal Location of Human Ortholog: 5p13.1
Cellular Component: AMP-activated protein kinase complex; cytoplasm; cytosol; intracellular; nuclear speck; nucleoplasm; nucleus
Molecular Function: AMP-activated protein kinase activity; chromatin binding; histone serine kinase activity; protein binding; protein kinase activity
Biological Process: cell cycle arrest; cellular response to glucose starvation; cellular response to nutrient levels; fatty acid homeostasis; glucose homeostasis; lipid biosynthetic process; macroautophagy; negative regulation of apoptosis; negative regulation of lipid catabolic process; negative regulation of TOR signaling pathway; positive regulation of autophagy; positive regulation of glycolysis; protein amino acid phosphorylation; regulation of circadian rhythm; regulation of macroautophagy; response to gamma radiation; signal transduction
Product References and Citations for AMPK recombinant protein
1. Hardie, G.D. The AMP-activated protein kinase pathway - new players upstream and downstream. J. Cell Sci. 2004;117: 5479 -5487. 2. Kahn, B.B. et al. AMP-activated protein kinase: Ancient energy gauge provides clues to modern understanding of metabolism. Cell Metab; 2005: 1, 15 -25.
Research Articles on AMPK
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Products associated with AMPK recombinant protein
Pathways associated with AMPK recombinant protein
Diseases associated with AMPK recombinant protein
Organs/Tissues associated with AMPK recombinant protein
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