| Role | Gene | Name | Anaero. fumarate as e acceptor | |
| | | ⨯ | |
| Formate dehydrogenase -O, gamma subunit (EC 1.2.1.2) | Shewana3_3918 | | -0.1 | |
| | Shewana3_3922 | | -1.0 | |
| Formate dehydrogenase N alpha subunit (EC 1.2.1.2) | No genes | | | |
| Formate dehydrogenase N beta subunit (EC 1.2.1.2) | Shewana3_0103 | | -0.2 | |
| | Shewana3_2090 | | +1.4 | |
| Formate dehydrogenase N gamma subunit (EC 1.2.1.2) | Shewana3_0104 | | -0.1 | |
| | Shewana3_2091 | | -0.7 | |
| Formate dehydrogenase O alpha subunit (EC 1.2.1.2) | No genes | | | |
| Formate dehydrogenase O beta subunit (EC 1.2.1.2) | No genes | | | |
| Formate dehydrogenase O gamma subunit (EC 1.2.1.2) | No genes | | | |
| Formate dehydrogenase O putative subunit | No genes | | | |
| Formate dehydrogenase chain D (EC 1.2.1.2) | Shewana3_0108 | | +0.1 | |
| | Shewana3_1873 | | +0.8 | |
| | Shewana3_3910 | | -1.3 | |
| 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) | Shewana3_3298 | | -0.0 | |
| | Shewana3_3916 | | -0.0 | |
| | Shewana3_3920 | | -0.6 | |
| Formate hydrogenlyase hypothetical subunit | No genes | | | |
| Formate hydrogenlyase regulatory protein HycA | No genes | | | |
| Formate hydrogenlyase subunit 2 | No genes | | | |
| Formate hydrogenlyase subunit 3 | No genes | | | |
| Formate hydrogenlyase subunit 3/Multisubunit Na+/H+ antiporter, MnhD subunit | No genes | | | |
| Formate hydrogenlyase subunit 4 | No genes | | | |
| Formate hydrogenlyase subunit 5 | No genes | | | |
| Formate hydrogenlyase subunit 6 | No genes | | | |
| Formate hydrogenlyase subunit 7 | No genes | | | |
| Formate hydrogenlyase transcriptional activator | Shewana3_1488 | | -0.2 | |
| 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 | Shewana3_3912 | | -0.4 | |
| 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 | Shewana3_1872 | | +0.1 | |
| Putative formate dehydrogenase, cytochrome B subunit (EC 1.2.1.2) | Shewana3_0709 | | +0.3 | |
| Putative formate dehydrogenase-specific chaperone | Shewana3_3914 | | -1.7 | |
| formate dehydrogenase formation protein FdhE | Shewana3_0105 | | -0.0 | |
| | Shewana3_2092 | | +0.5 | |
| 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 | | | |