Protein Kinase, AMP Activated Gamma 2 (PRKAg2) Antibody – Rabbit Polyclonal

AMPKG2: AMP/ATP-binding subunit of AMP-activated protein kinase (AMPK), an energy sensor protein kinase that plays a key role in regulating cellular energy metabolism. In response to reduction of intracellular ATP levels, AMPK activates energy-producing pathways and inhibits energy-consuming processes: inhibits protein, carbohydrate and lipid biosynthesis, as well as cell growth and proliferation. AMPK acts via direct phosphorylation of metabolic enzymes, and by longer-term effects via phosphorylation of transcription regulators. Also acts as a regulator of cellular polarity by remodeling the actin cytoskeleton; probably by indirectly activating myosin. Gamma non-catalytic subunit mediates binding to AMP, ADP and ATP, leading to activate or inhibit AMPK: AMP-binding results in allosteric activation of alpha catalytic subunit (PRKAA1 or PRKAA2) both by inducing phosphorylation and preventing dephosphorylation of catalytic subunits. ADP also stimulates phosphorylation, without stimulating already phosphorylated catalytic subunit. ATP promotes dephosphorylation of catalytic subunit, rendering the AMPK enzyme inactive. AMPK is a heterotrimer of an alpha catalytic subunit (PRKAA1 or PRKAA2), a beta (PRKAB1 or PRKAB2) and a gamma non- catalytic subunits (PRKAG1, PRKAG2 or PRKAG3). Interacts with FNIP1 and FNIP2. Isoform B is ubiquitously expressed except in liver and thymus. The highest level is detected in heart with abundant expression in placenta and testis. Belongs to the 5'-AMP-activated protein kinase gamma subunit family. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Autophagy; Protein kinase, regulatory subunit

Chromosomal Location of Human Ortholog: 5|5 A3

Cellular Component: extracellular space; nucleotide-activated protein kinase complex

Molecular Function: ADP binding; AMP binding; AMP-activated protein kinase activity; ATP binding; cAMP-dependent protein kinase inhibitor activity; cAMP-dependent protein kinase regulator activity; nucleotide binding; phosphorylase kinase regulator activity; protein kinase activator activity; protein kinase binding

Biological Process: fatty acid biosynthetic process; fatty acid metabolic process; glycogen metabolic process; lipid metabolic process; negative regulation of protein kinase activity; positive regulation of protein kinase activity; regulation of catalytic activity; regulation of fatty acid metabolic process; regulation of glycolysis