Atlas One · Host Biology · Scale 03 — Molecular

Ferroportin

Ferroportin (SLC40A1/FPN1) is the sole cellular iron exporter; expressed on enterocytes, macrophages, and hepatocytes; hepcidin binds FPN → internalization → lysosomal degradation → iron sequestration; SLC40A1 mutations cause type 4 haemochromatosis (ferroportin disease).

Also known as: ferroportin, FPN1, SLC40A1, IREG1, MTP1, ferroportin-1, iron-regulated transporter, hepcidin receptor

Scale 03 — MolecularScale
draftStatus
2026-06-08Last Reviewed
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ferroportin

Ferroportin

Ferroportin (SLC40A1/FPN1) is the sole cellular iron exporter; expressed on enterocytes, macrophages, and hepatocytes; hepcidin binds FPN → internalization → lysosomal degradation → iron sequestration; SLC40A1 mutations cause type 4 haemochromatosis (ferroportin disease).