Desulfoferrodoxins contains two types of iron: an Fe-S4 site very similar to that found in desulforedoxin from Desulfovibrio gigas and an octahedral coordinated high-spin ferrous site most probably with nitrogen/oxygen-containing ligands. Due to this rather unusual combination of active centres, this novel protein is named desulfoferrodoxin [1].

1: Purification and characterization of desulfoferrodoxin. A novel protein from Desulfovibrio desulfuricans (ATCC 27774) and from Desulfovibrio vulgaris (strain Hildenborough) that contains a distorted rubredoxin center and a mononuclear ferrous center. Moura I, Tavares P, Moura JJ, Ravi N, Huynh BH, Liu MY, LeGall J; J Biol Chem 1990;265:21596-21602. PMID:2174880

2: Primary structure of desulfoferrodoxin from Desulfovibrio desulfuricans ATCC 27774, a new class of non-heme iron proteins. Devreese B, Tavares P, Lampreia J, Van Damme N, Le Gall J, Moura JJ, Van Beeumen J, Moura I; FEBS Lett 1996;385:138-142. PMID:8647238