Protein Information

Name CYP2C9
Synonyms (R) limonene 6 monooxygenase; Xenobiotic monooxygenase; Mephenytoin 4 hydroxylase; Microsomal monooxygenase; S mephenytoin 4 hydroxylase; (S) limonene 6 monooxygenase; (S) limonene 7 monooxygenase; CPC 9…

Compound Information

Name methoxychlor
CAS 1,1′-(2,2,2-trichloroethylidene)bis[4-methoxybenzene]

Reference List

PubMed Abstract RScore(About this table)
15486075 Hazai E, Kupfer D: Interactions between CYP2C9 and CYP2C19 in reconstituted binary systems influence their catalytic activity: possible rationale for the inability of CYP2C19 to catalyze methoxychlor demethylation in human liver microsomes. Drug Metab Dispos. 2005 Jan;33(1):157-64. Epub 2004 Oct 14.

The current study examines whether the lack of methoxychlor-O-demethylation by CYP2C19 in HLM was due to CYP2C19 exhibiting inferior competition for the NADPH-cytochrome P450 reductase (CPR) versus CYP2C9 and explores the interactions between CYP2C9 and CYP2C19 in a singular and binary complex of a reconstituted system.
226(2,4,4,6) Details
14985143 Hu Y, Krausz K, Gelboin HV, Kupfer D: CYP2C subfamily, primarily CYP2C9, catalyses the enantioselective demethylation of the endocrine disruptor pesticide methoxychlor in human liver microsomes: use of inhibitory monoclonal antibodies in P450 identification. Xenobiotica. 2004 Feb;34(2):117-32.
163(2,2,2,3) Details
9733665 Stresser DM, Kupfer D: Human cytochrome P450-catalyzed conversion of the proestrogenic pesticide methoxychlor into an estrogen. Drug Metab Dispos. 1998 Sep;26(9):868-74.

Co-incubation of liver microsomes with methoxychlor and various P450 isoform-selective inhibitors suggested involvement of several P450s in mono-O-demethylation, including CYP1A2, CYP2A6, CYP2C9, and CYP2C19.
33(0,1,1,3) Details
12167570 Hu Y, Kupfer D: Metabolism of the endocrine disruptor pesticide-methoxychlor by human P450s: pathways involving a novel catechol metabolite. Drug Metab Dispos. 2002 Sep;30(9):1035-42.

Inhibition studies with HLM and P450s indicate that CYP2C9 and likely 2C19 are catalysts of methoxychlor-mono-demethylation.
31(0,1,1,1) Details
12433799 Hu Y, Kupfer D: Enantioselective metabolism of the endocrine disruptor pesticide methoxychlor by human cytochromes P450 (P450s): major differences in selective enantiomer formation by various P450 isoforms. Drug Metab Dispos. 2002 Dec;30(12):1329-36.

P450 inhibitors demonstrated that CYP2C9 and possibly 2C19 are major hepatic catalysts forming (S)-mono-OH-M, and CYP1A2 is primarily involved in forming the (R)-mono-OH-M.
1(0,0,0,1) Details
18585438 Bikadi Z, Hazai E: In silico description of differential enantioselectivity in methoxychlor O-demethylation by CYP2C enzymes. Biochim Biophys Acta. 2008 Sep;1780(9):1070-9. Epub 2008 Jun 9.

0(0,0,0,0) Details