GO:0009055

Hydrogenase, b-type cytochrome subunit, putative
Cytochrome c family protein
Cytochrome c553
Formate dehydrogenase 2 subunit alpha
Cytochrome c3
Electron transport complex subunit G
Cytochrome c family protein
Flavodoxin
Succinate dehydrogenase iron-sulfur subunit
FMN-dependent NADH-azoreductase