Purity > 90% as determined by SDS-PAGE. MW: 18.2kDa. Full Length of Mature Protein: 81-210aa. N-terminal 6xHis-tagged. Macaca fascicularis (Crab-eating macaque) (Cynomolgus monkey). Promotes the biosynthesis of he and assbly and repair of iron-sulfur clusters by delivering Fe2+ to proteins involved in these pathways. May play a role in the protection against iron-catalyzed oxidative stress through its ability to catalyze the oxidation of Fe2+ to Fe3+; the oligomeric form but not the monomeric form has in vitro ferroxidase activity. May be able to store large amounts of iron in the form of a ferrihydrite mineral by oligomerization. Modulates the RNA-binding activity of ACO1.