This gene encodes a peptide hormone that functions in the regulation of systemic iron metabolism. The encoded preproprotein is synthesized in the hepatocytes where it undergoes proteolytic processing to generate disulfide-linked mature peptides that are secreted into the bloodstream. Transgenic mice overexpressing the encoded protein develop normally with hematologic parameters similar to the non-transgenic mice. This gene is located adjacent to a related hepcidin gene on chromosome 7. [provided by RefSeq, Aug 2016]