Anti-HMG-CoA Reductase Antibody, clone IgG-A9 clone IgG-A9, from mouse

3-hydroxy-3-methylglutaryl-coenzyme A reductase (EC 1.1.1.34; UniProt P00347; also known as HMG-CoA reductase) is encoded by the HMGCR gene (Gene ID 100756363) in Cricetulus griseus (Chinese hamster). HMG-CoA reductase catalyzes the conversion of HMG-CoA to mevalonic acid, the rate-limiting enzyme of the mevalonate-isoprenoid biosynthesis (MIB) pathway responsible for the production of cholesterol and other isoprenoids, as well as farnesyl pyrophosphate (FPP) required for protein prenylation. HMG-CoA reductase is suppressed by cholesterol derived from the internalization and degradation of low density lipoprotein (LDL) via the LDL receptor as well as oxidized cholesterol species. Competitive inhibitors against HMG-CoA reductase induce LDL receptors expression in the liver, which in turn increases the catabolism of plasma LDL and lowers the plasma concentration of cholesterol. HMG-CoA reductase is a multitransmembrane ER protein with an N-terminal sterol-sensing domain (SSD; a.a. 61-218) and a C-terminal catalytic domain (a.a. 450-888) whose activity is inhibited upon SSD binding by cholesterol. Numerous studies have implicated the involvement of HMG-CoA reductase and mevalonate pathway in carcinogenesis.