Predicted to enable several functions, including FAD binding activity; heme binding activity; and oxidoreductase activity, acting on metal ions, NAD or NADP as acceptor. Predicted to be involved in copper ion import; fat cell differentiation; and protein homotrimerization. Predicted to act upstream of or within iron import into cell. Predicted to be located in nucleoplasm. Predicted to be integral component of membrane. Predicted to be active in endosome and plasma membrane. Orthologous to human STEAP4 (STEAP4 metalloreductase). [provided by Alliance of Genome Resources, Apr 2022]