UniprotKB/SwissProt ID: O88455 (O88455)
Gene Name:
Dhcr7
Organism: Mus musculus (Mouse)
Function: Oxidoreductase that catalyzes the last step of the cholesterol synthesis pathway, which transforms cholesta-5,7-dien-3beta-ol (7-dehydrocholesterol,7-DHC) into cholesterol by reducing the C7-C8 double bond of its sterol core (PubMed:11230174, PubMed:38297130). Can also metabolize cholesta-5,7,24-trien-3beta-ol (7-dehydrodemosterol, 7-DHD) to desmosterol, which is then metabolized by the Delta(24)-sterol reductase (DHCR24) to cholesterol (PubMed:11230174). Modulates ferroptosis (a form of regulated cell death driven by iron-dependent lipid peroxidation) through the metabolic breakdown of the anti-ferroptotic metabolites 7-DHC and 7-DHD which, when accumulated, divert the propagation of peroxyl radical-mediated damage from phospholipid components to its sterol core, protecting plasma and mitochondrial membranes from phospholipid autoxidation (PubMed:38297130) Component of the microsomal antiestrogen binding site (AEBS), a multiproteic complex at the ER membrane that consists of an association between cholestenol Delta-isomerase/EBP and DHCR7. This complex is responsible for cholesterol-5,6-epoxide hydrolase (ChEH) activity, which consists in the hydration of cholesterol-5,6-epoxides (5,6-EC) into cholestane-3beta,5alpha,6beta-triol (CT). The precise role of each component of this complex has not been described yet
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Endoplasmic reticulum membrane
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