Predicted to enable FAD binding activity and methylenetetrahydrofolate reductase (NAD(P)H) activity. Predicted to be involved in methionine biosynthetic process and tetrahydrofolate interconversion. Predicted to act upstream of or within methionine metabolic process. Is expressed in anterior neural tube; optic cup; and somite. Human ortholog(s) of this gene implicated in several diseases, including carcinoma (multiple); cardiovascular system disease (multiple); hematologic cancer (multiple); kidney failure (multiple); and liver disease (multiple). Orthologous to human MTHFR (methylenetetrahydrofolate reductase).