Stores iron in a soluble, non-toxic, readily available form. Important for iron homeostasis. Has ferroxidase activity . Iron is taken up in the ferrous form and deposited as ferric hydroxides after oxidation . Also plays a role in delivery of iron to cells (By similarity). Mediates iron uptake in capsule cells of the developing kidney (By similarity).
Subcellular locations: Cytoplasm
Expressed in the liver.