Transmembrane glycoprotein that is the rate-limiting enzyme in cholesterol biosynthesis as well as in the biosynthesis of nonsterol isoprenoids that are essential for normal cell function including ubiquinone and geranylgeranyl proteins.
Specificity
Natural and recombinant Bovine 3-hydroxy-3-methylglutaryl-coenzyme A reductase
Subcellular Location
Endoplasmic reticulum membrane Multi-pass membrane protein
Homodimer (By similarity). Interacts with INSIG1 (via its SSD); the interaction, accelerated by sterols, leads to the recruitment of HMGCR to AMFR/gp78 for its ubiquitination by the sterol-mediated ERAD pathway. Interacts with UBIAD1.