This domain is usually found in two copies per protein. It contains up to four conserved cysteines. The group includes proteins characterised as:
heterodisulphide reductase, subunit B (HrdB);
succinate dehydrogenase, subunit C (SdhC, EC:1.3.99.1);
Fe-S oxidoreductase;
glycerol-3-phosphate dehydrogenase subunit C (Anaerobic GlpC, EC:1.1.99.5); and
glycolate oxidase iron-sulphur subunit (GlcF) [1].
Pellicer MT, Badia J, Aguilar J, Baldoma L.
glc locus of Escherichia coli: characterization of genes encoding the subunits of glycolate oxidase and the glc regulator protein.
J. Bacteriol. 178 2051-9 1996
[PubMed: 8606183] http://jb.asm.org/cgi/content/abstract/178/7/2051