The Enzyme Database

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Accepted name: albendazole monooxygenase
Reaction: albendazole + NADPH + H+ + O2 = albendazole S-oxide + NADP+ + H2O
For diagram of albendazole metabolism, click here
Glossary: albendazole = methyl [5-(propylsulfanyl)-1H-benzimidazol-2-yl]carbamate
Other name(s): albendazole oxidase (misleading); albendazole sulfoxidase (ambiguous); FMO3 (gene name); albendazole monooxygenase (flavin-containing)
Systematic name: albendazole,NADPH:oxygen oxidoreductase (sulfoxide-forming)
Comments: A microsomal flavin-containing monooxygenase. A similar conversion is also carried out by some microsomal cytochrome P-450 enzymes [EC, albendazole monooxygenase (sulfoxide-forming)]. It is estimated that cytochrome P-450s are responsible for 70% of the activity.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 101299-59-6
1.  Fargetton, X., Galtier, P. and Delatour, P. Sulfoxidation of albendazole by a cytochrome P450-independent monooxygenase from rat liver microsomes. Vet. Res. Commun. 10 (1986) 317–324. [PMID: 3739217]
2.  Moroni, P., Buronfosse, T., Longin-Sauvageon, C., Delatour, P. and Benoit, E. Chiral sulfoxidation of albendazole by the flavin adenine dinucleotide-containing and cytochrome P450-dependent monooxygenases from rat liver microsomes. Drug Metab. Dispos. 23 (1995) 160–165. [PMID: 7736906]
3.  Rawden, H.C., Kokwaro, G.O., Ward, S.A. and Edwards, G. Relative contribution of cytochromes P-450 and flavin-containing monoxygenases to the metabolism of albendazole by human liver microsomes. Br. J. Clin. Pharmacol. 49 (2000) 313–322. [PMID: 10759686]
[EC created 1989, modified 2018]

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