ExplorEnz: EC 1.14.14.55

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1.14.14.55

Accepted name:

quinine 3-monooxygenase

Reaction:

quinine + [reduced NADPH—hemoprotein reductase] + O₂ = 3-hydroxyquinine + [oxidized NADPH—hemoprotein reductase] + H₂O

Glossary:

quinine = a quinoline alkaloid

Other name(s):

CYP3A4 (gene name)

Systematic name:

quinine,[reduced NADPH—hemoprotein reductase]:oxygen oxidoreductase

Comments:

A cytochrome P-450 (heme-thiolate) protein.

Links to other databases:

BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 50812-30-1, 213327-78-7

References:

1.	Relling, M.V., Evans, R., Dass, C., Desiderio, D.M. and Nemec, J. Human cytochrome P₄₅₀ metabolism of teniposide and etoposide. J. Pharmacol. Exp. Ther. 261 (1992) 491–496. [PMID: 1578365]
2.	Zhang, H., Coville, P.F., Walker, R.J., Miners, J.O., Birkett, D.J. and Wanwimolruk, S. Evidence for involvement of human CYP3A in the 3-hydroxylation of quinine. Br. J. Clin. Pharmacol. 43 (1997) 245–252. [DOI] [PMID: 9088578]
3.	Zhao, X.-J., Kawashiro, T. and Ishizaki, T. Mutual inhibition between quinine and etoposide by human liver microsomes. Evidence for cytochrome P4503A4 involvement in their major metabolic pathways. Drug Metab. Dispos. 26 (1998) 188–191. [PMID: 9456308]
4.	Zhao, X.-J., Yokoyama, H., Chiba, K., Wanwimolruk, S. and Ishizaki, T. Identification of human cytochrome P₄₅₀ isoforms involved in the 3-hydroxylation of quinine by human liver microsomes and nine recombinant human cytochromes P₄₅₀. J. Pharmacol. Exp. Ther. 279 (1996) 1327–1334. [PMID: 8968357]

[EC 1.14.14.55 created 2000 as EC 1.14.13.67, transferred 2017 to EC 1.14.14.55]