7-Dehydrocholesterol reductase, also known as DHCR7, is a protein that in humans is encoded by the DHCR7 gene. [5] [6] [7]
7-dehydrocholesterol reductase | |||||||||
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Identifiers | |||||||||
EC no. | 1.3.1.21 | ||||||||
CAS no. | 9080-21-1 | ||||||||
Databases | |||||||||
IntEnz | IntEnz view | ||||||||
BRENDA | BRENDA entry | ||||||||
ExPASy | NiceZyme view | ||||||||
KEGG | KEGG entry | ||||||||
MetaCyc | metabolic pathway | ||||||||
PRIAM | profile | ||||||||
PDB structures | RCSB PDB PDBe PDBsum | ||||||||
Gene Ontology | AmiGO / QuickGO | ||||||||
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The protein encoded by this gene is an enzyme catalyzing the production of cholesterol from 7-dehydrocholesterol using NADPH.
The DHCR7 gene encodes delta-7-sterol reductase (EC 1.3.1.21), the ultimate enzyme of mammalian sterol biosynthesis that converts 7-dehydrocholesterol (7-DHC) to cholesterol. This enzyme removes the C(7-8) double bond introduced by the sterol delta8-delta7 isomerases. In addition, its role in drug-induced malformations is known: inhibitors of the last step of cholesterol biosynthesis such as AY9944 and BM15766 severely impair brain development. [5]
A deficiency is associated with Smith–Lemli–Opitz syndrome. [8]
All house cats and dogs have higher-than-usual activity of this enzyme, causing an inability to synthesize vitamin D due to the lack of 7-dehydrocholesterol. [9]
Click on genes, proteins and metabolites below to link to respective articles. [§ 1]
This article incorporates text from the United States National Library of Medicine, which is in the public domain.