a non-catalytic subunit of AMPK, a highly conserved kinase of the CAMKL family. The holoenzyme consists of a catalytic subunit (alpha) and two regulatory subunits (beta, gamma). Each subunit exists as multiple genetic isoforms giving rise to 12 different possible combinations of holoenzyme. Plays a key role in regulation of energy homeostasis. Activated by an elevated AMP-ATP ratio due to environmental stress, such as heat shock, hypoxia and ischemia. AMPK phosphorylates and regulates many metabolic enzymes. Note: This description may include information from UniProtKB.
Protein type: Autophagy; Protein kinase, regulatory subunit
Cellular Component: AMP-activated protein kinase complex; cytosol; membrane; nucleoplasm
Molecular Function: ADP binding; AMP binding; AMP-activated protein kinase activity; ATP binding; cAMP-dependent protein kinase activity; cAMP-dependent protein kinase regulator activity; protein binding; protein kinase activity; protein kinase binding
Biological Process: cell cycle arrest; macroautophagy; positive regulation of protein kinase activity; protein amino acid phosphorylation; regulation of glycolysis; regulation of macroautophagy; signal transduction; spermatogenesis