Enables heme binding activity; molybdopterin cofactor binding activity; and sulfite oxidase activity. Involved in response to nutrient. Located in cytosol and mitochondrial intermembrane space. Biomarker of fatty liver disease. Human ortholog(s) of this gene implicated in inherited metabolic disorder and isolated sulfite oxidase deficiency. Orthologous to human SUOX (sulfite oxidase). [provided by Alliance of Genome Resources, Apr 2022]