CATH Classification

Domain Context

CATH Clusters

Superfamily Cytochrome P450
Functional Family Cytochrome P450 family protein

Enzyme Information

1.14.13.48
(S)-limonene 6-monooxygenase.
based on mapping to UniProt P11712
(-)-(S)-limonene + NADPH + O(2) = (-)-trans-carveol + NADP(+) + H(2)O.
-!- High specificity, but NADH can act instead of NADPH, although more slowly.
1.14.13.-
With NADH or NADPH as one donor, and incorporation of one atom of oxygen.
based on mapping to UniProt P11712
1.14.13.80
(R)-limonene 6-monooxygenase.
based on mapping to UniProt P11712
(+)-(R)-limonene + NADPH + O(2) = (+)-trans-carveol + NADP(+) + H(2)O.
-!- The reaction is stereospecific with over 95% yield of (+)-trans- carveol from (R)-limonene. -!- (S)-Limonene, the substrate for EC 1.14.13.48 is not a substrate. -!- Forms part of the carvone biosynthesis pathway in Carum carvi (caraway) seeds.
1.14.13.49
(S)-limonene 7-monooxygenase.
based on mapping to UniProt P11712
(-)-(S)-limonene + NADPH + O(2) = (-)-perillyl alcohol + NADP(+) + H(2)O.
-!- High specificity, but NADH can act instead of NADPH, although more slowly.
1.14.99.38
Cholesterol 25-hydroxylase.
based on mapping to UniProt P11712
Cholesterol + AH(2) + O(2) = 25-hydroxycholesterol + A + H(2)O.
-!- Unlike most other sterol hydroxylases, this enzyme is not a cytochrome P450. -!- Instead, it uses diiron cofactors to catalyze the hydroxylation of hydrophobic substrates. -!- The diiron cofactor can be either Fe-O-Fe or Fe-OH-Fe and is bound to the enzyme through interactions with clustered histidine or glutamate residues. -!- In cell cultures, this enzyme down-regulates cholesterol synthesis and the processing of sterol regulatory element binding proteins (SREBPs).

UniProtKB Entries (1)

P11712
CP2C9_HUMAN
Homo sapiens
Cytochrome P450 2C9

PDB Structure

PDB 1OG2
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Crystal Structure of Human Cytochrome P450 2C9 with Bound Warfarin
Williams, P.A., Cosme, J., Ward, A., Angove, H.C., Matak Vinkovic, D., Jhoti, H.
Nature
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