Predicted to enable ferrous iron transmembrane transporter activity; identical protein binding activity; and peptide hormone binding activity. Predicted to be involved in cellular iron ion homeostasis and iron ion export across plasma membrane. Predicted to act upstream of or within several processes, including multicellular organismal iron ion homeostasis; regulation of transcription by RNA polymerase II; and spleen trabecula formation. Predicted to be located in several cellular components, including cytosol; nucleoplasm; and synaptic vesicle. Predicted to be active in basolateral plasma membrane. Human ortholog(s) of this gene implicated in hemochromatosis type 4. Orthologous to human SLC40A1 (solute carrier family 40 member 1). [provided by Alliance of Genome Resources, Apr 2022]