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4Fe-4S dicluster domain-containing protein
This family includes proteins containing domains which bind to iron-sulfur clusters. Members include bacterial ferredoxins, various dehydrogenases, and various reductases. The structure of the domain is an alpha-antiparallel beta sandwich. (from Pfam)
4Fe-4S binding protein
Superfamily includes proteins containing domains which bind to iron-sulfur clusters. Members include bacterial ferredoxins, various dehydrogenases, and various reductases. Structure of the domain is an alpha-antiparallel beta sandwich. (from Pfam)
4Fe-4S binding domain
This superfamily includes proteins containing domains which bind to iron-sulfur clusters. Members include bacterial ferredoxins, various dehydrogenases, and various reductases. Structure of the domain is an alpha-antiparallel beta sandwich. (from Pfam)
FixG Ig-like domain-containing protein
This domain is part of a transmembrane protein, FixG, itself part of the FixGHIS operon closely associated with the FixNOPQ operon that is the symbiotically essential cbb3-type haem-copper oxidase complex. FixG expression is induced by oxygen-deprivation. This C-terminal domain adopts an E-set Ig-like fold. [1]. 8661920. The Bradyrhizobium japonicum fixGHIS genes are required for the. formation of the high-affinity cbb3-type cytochrome oxidase.. Preisig O, Zufferey R, Hennecke H;. Arch Microbiol. 1996;165:297-305.. [2]. 12620739. Genome sequence of Vibrio parahaemolyticus: a pathogenic. mechanism distinct from that of V cholerae.. Makino K, Oshima K, Kurokawa K, Yokoyama K, Uda T, Tagomori K,. Iijima Y, Najima M, Nakano M, Yamashita A, Kubota Y, Kimura S,. Yasunaga T, Honda T, Shinagawa H, Hattori M, Iida T;. Lancet. 2003;361:743-749. (from Pfam)
cytochrome c oxidase accessory protein CcoG
Member of this ferredoxin-like protein family are found exclusively in species with an operon encoding the cbb3 type of cytochrome c oxidase (cco-cbb3), and near the cco-cbb3 operon in about half the cases. The cco-cbb3 is found in a variety of proteobacteria and almost nowhere else, and is associated with oxygen use under microaerobic conditions. Some (but not all) of these proteobacteria are also nitrogen-fixing, hence the gene symbol fixG. FixG was shown essential for functional cco-cbb3 expression in Bradyrhizobium japonicum.
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