CYP3A4,5 hydroxylates AFB1 to AFQ1
AFB1 + NADPH + O2 + H+ → AFQ1 + H2O + NADP+
- Reactome
- R-HSA-5423664
- Compartment
- cytosol · endoplasmic reticulum membrane
- Rhea
- None recorded
Inputs
- AFB1CHEBI:2504, C17H12O6, cytosol
- NADPHCHEBI:57783, C21H26N7O17P3, cytosol
- O2CHEBI:15379, O2, cytosol
- H+CHEBI:15378, H, cytosol
Outputs
- AFQ1CHEBI:78582, C17H12O7, cytosol
- H2OCHEBI:15377, H2O, cytosol
- NADP+CHEBI:58349, C21H25N7O17P3, cytosol
Catalysed by
- monooxygenase activity of CYP3A4,5 [endoplasmic reticulum membrane]
Literature
- The kinetics of aflatoxin B1 oxidation by human cDNA-expressed and human liver microsomal cytochromes P450 1A2 and 3A4 Toxicol. Appl. Pharmacol., 1996
- Aflatoxin metabolism in humans: detection of metabolites and nucleic acid adducts in urine by affinity chromatography Proc. Natl. Acad. Sci. U.S.A., 1985
- Oxidation of aflatoxins and sterigmatocystin by human liver microsomes: significance of aflatoxin Q1 as a detoxication product of aflatoxin B1 Chem. Res. Toxicol., 1992