CATH Classification

Domain Context

CATH Clusters

Superfamily Cytochrome P450
Functional Family cholesterol 24-hydroxylase isoform X2

Enzyme Information

1.14.14.25
Cholesterol 24-hydroxylase.
based on mapping to UniProt Q9Y6A2
Cholesterol + [reduced NADPH--hemoprotein reductase] + O(2) = (24S)- cholest-5-ene-3-beta,24-diol + [oxidized NADPH--hemoprotein reductase] + H(2)O.
-!- The enzyme can also produce 25-hydroxycholesterol. -!- In addition, it can further hydroxylate the product to 24,25- dihydroxycholesterol and 24,27-dihydroxycholesterol. -!- This reaction is the first step in the enzymic degradation of cholesterol in the brain as hydroxycholesterol can pass the blood- brain barrier whereas cholesterol cannot. -!- The direct electron donor to the enzyme is EC 1.6.2.4. -!- Formerly EC 1.14.13.98.

UniProtKB Entries (1)

Q9Y6A2
CP46A_HUMAN
Homo sapiens
Cholesterol 24-hydroxylase

PDB Structure

PDB 4ENH
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
In Silico and Intuitive Predictions of CYP46A1 Inhibition by Marketed Drugs with Subsequent Enzyme Crystallization in Complex with Fluvoxamine.
Mast, N., Linger, M., Clark, M., Wiseman, J., Stout, C.D., Pikuleva, I.A.
Mol.Pharmacol.