Probable Ni/Fe-hydrogenase 1 B-type cytochrome subunit
Electron + Hydrogen Ion + 2 Hydrogen Ion + menaquinone-8 → Hydrogen Ion + Menaquinol 8
Formate dehydrogenase-O iron-sulfur subunit
Electron + Formic acid + Hydrogen Ion + menaquinone-8 → Carbon dioxide + Hydrogen Ion + Menaquinol 8
4 Hydrogen Ion + 2 Hydrogen Ion + NADH + menaquinone-8 ? Electron + Hydrogen Ion + 4 Hydrogen Ion + Menaquinol 8 + NAD
2 Electron + 3 Hydrogen Ion + Menaquinol 8 + Trimethylamine N-oxide → 2 Hydrogen Ion + Trimethylamine + Water + menaquinone-8
hydrogenase 1, oxygen tolerant hydrogenase
Formate dehydrogenase, cytochrome b556(fdo) subunit