A flavoprotein. The enzyme catalyses the reduction of bound ferric iron in a variety of iron chelators (siderophores), resulting in the release of ferrous iron. The enzyme from the hyperthermophilic archaeon Archaeoglobus fulgidus is not active with uncomplexed Fe(III). cf. EC 22.214.171.124, ferric-chelate reductase (NADH) and EC 126.96.36.199, ferric-chelate reductase (NADPH).
Vadas, A., Monbouquette, H.G., Johnson, E. and Schroder, I. Identification and characterization of a novel ferric reductase from the hyperthermophilic Archaeon Archaeoglobus fulgidus. J. Biol. Chem.274 (1999) 36715–36721. [DOI] [PMID: 10593977]
Chiu, H.J., Johnson, E., Schroder, I. and Rees, D.C. Crystal structures of a novel ferric reductase from the hyperthermophilic archaeon Archaeoglobus fulgidus and its complex with NADP+. Structure9 (2001) 311–319. [DOI] [PMID: 11525168]