FMO1: Proteins and Enzymes

Metabolic N-oxidation of the diet-derived amino-trimethylamine (TMA) is mediated by flavin-containing monooxygenase andis subject to an inherited FMO3 polymorphism in man resulting in a small subpopulation with reduced TMA N-oxidationcapacity resulting in fish odor syndrome Trimethylaminuria. Three forms of the enzyme, FMO1 found in fetal liver, FMO2found in adult liver, and FMO3 are encoded by genes clustered in the 1q23-q25 region. Flavin-containing monooxygenasesare NADPH-dependent flavoenzymes that catalyzes the oxidation of soft nucleophilic heteroatom centers in drugs,pesticides, and xenobiotics. (provided by RefSeq)