AMPKbeta1 is a member of the SNF1 kinase family. It is a heterotrimeric protein comprising of an alpha (catalytic), beta (non-catalytic) and gamma (non-catalytic) subunits, 63, 38 and 38kDa respectively.AMPKbeta1 regulates fatty acid and sterol synthesis by phosphorylation of acteyl-coA. It also regulates cholesterol synthesis via phosphorylation and in-activation of hydroxymethylglutaryl-CoA reductase.Two isoforms of AMPKbeta1 have been found.
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