Description Biochem/physiol Actions AMPK (A1/B2/G1) is a member of the AMPK family which are heterotrimeric proteins consisting of an α catalytic subunit, and non-catalytic β and γ subunits. AMPKs are an important energy-sensing enzyme group in the cells that monitor energy status particularly in response to stress. AMPKs regulate fatty acid and cholesterol synthesis by regulating the key rate-limiting enzymes acetyl-CoA carboxylase and 3-hydroxy-3-methylglutaryl-CoA reductase. The β subunit may be a positive regulator of AMPK activity and is highly expressed in skeletal muscle. Physical form Supplied in 50 mM Sodium Phosphate, pH 7.0, with 150 mM imidazole, 0.1 mM PMSF, 0.2 mM DTT, and 25% glycerol. Legal Information PRECISIO is a registered trademark of Sigma-Aldrich Co. LLC