| Role | Gene | Name | |
|---|
| Formate dehydrogenase -O, gamma subunit (EC 1.2.1.2) | No genes | | |
| Formate dehydrogenase N alpha subunit (EC 1.2.1.2) | No genes | | |
| Formate dehydrogenase N beta subunit (EC 1.2.1.2) | No genes | | |
| Formate dehydrogenase N gamma subunit (EC 1.2.1.2) | HEPCGN_26410 | fdnI | |
| Formate dehydrogenase O alpha subunit (EC 1.2.1.2) | No genes | | |
| Formate dehydrogenase O beta subunit (EC 1.2.1.2) | HEPCGN_12595 | fdoH | |
| Formate dehydrogenase O gamma subunit (EC 1.2.1.2) | HEPCGN_12600 | fdoI | |
| Formate dehydrogenase O putative subunit | No genes | | |
| Formate dehydrogenase chain D (EC 1.2.1.2) | HEPCGN_12585 | fdhD | |
| Formate dehydrogenase putative subunit (EC 1.2.1.2) | No genes | | |
| Formate dehydrogenase related protein | No genes | | |
| Formate dehydrogenase-O, iron-sulfur subunit (EC 1.2.1.2) | No genes | | |
| Formate dehydrogenase-O, major subunit (EC 1.2.1.2) | No genes | | |
| Formate hydrogenlyase hypothetical subunit | No genes | | |
| Formate hydrogenlyase regulatory protein HycA | HEPCGN_19760 | hycA | |
| Formate hydrogenlyase subunit 2 | HEPCGN_19765 | hycB | |
| Formate hydrogenlyase subunit 3 | HEPCGN_19770 | hycC | |
| | HEPCGN_21065 | hyfB | |
| Formate hydrogenlyase subunit 3/Multisubunit Na+/H+ antiporter, MnhD subunit | No genes | | |
| Formate hydrogenlyase subunit 4 | HEPCGN_19775 | hycD | |
| Formate hydrogenlyase subunit 5 | No genes | | |
| Formate hydrogenlyase subunit 6 | No genes | | |
| Formate hydrogenlyase subunit 7 | HEPCGN_19790 | hycG | |
| Formate hydrogenlyase transcriptional activator | HEPCGN_19725 | flhA | |
| | HEPCGN_19730 | flhA | |
| | HEPCGN_21020 | hyfR | |
| Hydrogenase-4 component A (EC 1.-.-.-) | No genes | | |
| Hydrogenase-4 component B (EC 1.-.-.-) | No genes | | |
| Hydrogenase-4 component C (EC 1.-.-.-) | No genes | | |
| Hydrogenase-4 component D (EC 1.-.-.-) | No genes | | |
| Hydrogenase-4 component E (EC 1.-.-.-) | No genes | | |
| Hydrogenase-4 component F (EC 1.-.-.-) | No genes | | |
| Hydrogenase-4 component G (EC 1.-.-.-) | No genes | | |
| Hydrogenase-4 component H (EC 1.-.-.-) | No genes | | |
| Hydrogenase-4 component I (EC 1.-.-.-) | No genes | | |
| Hydrogenase-4 transcriptional activator | No genes | | |
| Hypothetical protein YrhD | No genes | | |
| Hypothetical protein probably related to Formate dehydrogenase function | No genes | | |
| NAD-dependent formate dehydrogenase (EC 1.2.1.2) | No genes | | |
| NAD-dependent formate dehydrogenase alpha subunit | No genes | | |
| NAD-dependent formate dehydrogenase beta subunit | No genes | | |
| NAD-dependent formate dehydrogenase delta subunit | No genes | | |
| NAD-dependent formate dehydrogenase gamma subunit | No genes | | |
| Putative formate dehydrogenase iron-sulfur subunit (EC 1.2.1.2) | No genes | | |
| Putative formate dehydrogenase oxidoreductase protein | HEPCGN_26545 | ydeO | |
| | HEPCGN_26555 | ydeP | |
| Putative formate dehydrogenase, cytochrome B subunit (EC 1.2.1.2) | No genes | | |
| Putative formate dehydrogenase-specific chaperone | No genes | | |
| formate dehydrogenase formation protein FdhE | HEPCGN_12605 | fdhE | |
| hydrogenase, HycC subunit, putative | No genes | | |
| hydrogenase, group 4, HycE subunit, putative | No genes | | |
| hydrogenase, group 4, HycG subunit, putative | No genes | | |
| tungsten-containing formate dehydrogenase alpha subunit | No genes | | |
| tungsten-containing formate dehydrogenase beta subunit | No genes | | |