[HTML][HTML] The 5′-AMP-activated protein kinase γ3 isoform has a key role in carbohydrate and lipid metabolism in glycolytic skeletal muscle

BR Barnes, S Marklund, TL Steiler, M Walter… - Journal of Biological …, 2004 - ASBMB
5′-AMP-activated protein kinase (AMPK) is a metabolic stress sensor present in all
eukaryotes. A dominant missense mutation (R225Q) in pig PRKAG3, encoding the muscle-
specific γ3 isoform, causes a marked increase in glycogen content. To determine the
functional role of the AMPK γ3 isoform, we generated transgenic mice with skeletal muscle-
specific expression of wild type or mutant (225Q) mouse γ3 as well as Prkag3 knockout
mice. Glycogen resynthesis after exercise was impaired in AMPK γ3 knock-out mice and …