Predicted to enable monooxygenase activity. Predicted to be involved in lipid metabolic process. Predicted to be located in endoplasmic reticulum membrane. Expressed in excretory gland cell; intestine; and ventral nerve cord. Human ortholog(s) of this gene implicated in hypertension and trimethylaminuria. Is an ortholog of several human genes including FMO2 (flavin containing dimethylaniline monoxygenase 2); FMO3 (flavin containing dimethylaniline monoxygenase 3); and FMO4 (flavin containing dimethylaniline monoxygenase 4).