Predicted to enable iron ion binding activity and oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, reduced pteridine as one donor, and incorporation of one atom of oxygen. Predicted to be involved in aromatic amino acid metabolic process. Is an ortholog of C. elegans cat-2. In C. elegans, cat-2 is involved in several processes, including cellular response to amphetamine; dopamine biosynthetic process from tyrosine; and male mating behavior.