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fdhF | Formate dehydrogenase-H, selenopolypeptide subunit; Decomposes formic acid to hydrogen and carbon dioxide under anaerobic conditions in the absence of exogenous electron acceptors. (715 aa) | ||||
fdoG | Formate dehydrogenase-O, large subunit; Allows to use formate as major electron donor during aerobic respiration. Subunit alpha possibly forms the active site; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. (1016 aa) | ||||
fdnG | Formate dehydrogenase-N, alpha subunit, nitrate-inducible; Formate dehydrogenase allows E.coli to use formate as major electron donor during anaerobic respiration, when nitrate is used as electron acceptor. The alpha subunit FdnG contains the formate oxidation site. Electrons are transferred from formate to menaquinone in the gamma subunit (FdnI), through the 4Fe-4S clusters in the beta subunit (FdnH). Formate dehydrogenase-N is part of a system that generates proton motive force, together with the dissimilatory nitrate reductase (Nar). (1015 aa) |