| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Methanococcus maripaludis JJ | MMJJ_RS06865 | | NADH-quinone oxidoreductase subunit H | sig. | 100 | 100 |
| o | Methanococcus maripaludis S2 | MMP_RS07495 | | NADH-quinone oxidoreductase subunit H | no data | 99 | 100 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_3193 | | respiratory-chain NADH dehydrogenase subunit 1 (RefSeq) | no data | 31 | 77 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0433 | | Ech hydrogenase, subunit EchB, putative (TIGR) | strong | 31 | 71 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1519 | | respiratory-chain NADH dehydrogenase subunit 1 (RefSeq) | cofit | 31 | 85 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF4715 | | Formate hydrogenlyase subunit 4 | insig. | 29 | 80 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU2287 | | hydrogenase, CooK subunit, selenocysteine-containing, putative (TIGR) | insig. | 28 | 72 |
| o | Rhodospirillum rubrum S1H | Rru_A0317 | | Respiratory-chain NADH dehydrogenase, subunit 1 (NCBI) | insig. | 28 | 80 |
| | Klebsiella pneumoniae MKP103 | KDGMDA_02995 | | hydrogenase 3 membrane subunit | insig. | 27 | 78 |
| | Enterobacter asburiae PDN3 | EX28DRAFT_2813 | | Formate hydrogenlyase subunit 4 | insig. | 26 | 78 |
| | Escherichia coli BL21 | ECD_02572 | | hydrogenase 3, membrane subunit | insig. | 26 | 78 |
| | Escherichia coli ECOR27 | NOLOHH_12430 | hycD | formate hydrogenlyase subunit HycD | insig. | 26 | 78 |
| | Escherichia coli ECRC100 | OKFHMN_20585 | hycD | formate hydrogenlyase subunit HycD | cofit | 26 | 78 |
| | Escherichia coli ECRC101 | MCAODC_11110 | hycD | formate hydrogenlyase subunit HycD | insig. | 26 | 78 |
| | Escherichia coli ECRC102 | NIAGMN_18355 | hycD | formate hydrogenlyase subunit HycD | insig. | 26 | 78 |
| | Escherichia coli ECRC98 | JDDGAC_24250 | hycD | formate hydrogenlyase subunit HycD | insig. | 26 | 78 |
| | Escherichia coli ECRC99 | KEDOAH_07550 | hycD | formate hydrogenlyase subunit HycD | no data | 26 | 78 |
| | Escherichia fergusonii Becca | EFB2_01201 | | Formate hydrogenlyase subunit 4 | cofit | 26 | 78 |
| | Escherichia coli ECOR38 | HEPCGN_19775 | hycD | formate hydrogenlyase subunit HycD | insig. | 26 | 78 |
| | Escherichia coli ECRC62 | BNILDI_10980 | hycD | formate hydrogenlyase subunit HycD | insig. | 26 | 78 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01012 | | Formate hydrogenlyase subunit 4 | insig. | 26 | 78 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS15210 | | formate hydrogenlyase subunit HycD | no data | 26 | 78 |
| | Escherichia coli BW25113 | b2722 | hycD | hydrogenase 3, membrane subunit (NCBI) | sig. | 26 | 78 |
| | Klebsiella michiganensis M5al | BWI76_RS22325 | | hydrogenase 3 membrane subunit | insig. | 27 | 74 |
| | Escherichia coli ECRC100 | OKFHMN_21890 | hyfC | hydrogenase 4 subunit HyfC | cofit | 28 | 73 |
| | Escherichia coli ECRC101 | MCAODC_12420 | hyfC | hydrogenase 4 subunit HyfC | insig. | 28 | 73 |
| | Escherichia coli ECRC102 | NIAGMN_19660 | hyfC | hydrogenase 4 subunit HyfC | cofit | 28 | 73 |
| | Escherichia coli ECRC98 | JDDGAC_25835 | hyfC | hydrogenase 4 subunit HyfC | insig. | 28 | 73 |
| | Escherichia coli ECRC99 | KEDOAH_06330 | hyfC | hydrogenase 4 subunit HyfC | no data | 28 | 73 |
| | Escherichia coli ECRC62 | BNILDI_12360 | hyfC | hydrogenase 4 subunit HyfC | cofit | 28 | 73 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01245 | | Hydrogenase-4 component C | insig. | 28 | 73 |
| | Escherichia coli BW25113 | b2483 | hyfC | hydrogenase 4 membrane subunit (VIMSS) | insig. | 28 | 73 |
| | Synechocystis sp000284455 PCC 6803 | SGL_RS17000 | | NADH-quinone oxidoreductase subunit NuoH | no data | 27 | 74 |
| | Escherichia coli ECOR27 | NOLOHH_13550 | hyfC | hydrogenase 4 subunit HyfC | insig. | 28 | 73 |
| | Synechococcus elongatus PCC 7942 | Synpcc7942_1343 | ndhA | NADH dehydrogenase subunit H | no data | 26 | 64 |
| | Rhodospirillum rubrum S1H | Rru_A1421 | | Respiratory-chain NADH dehydrogenase, subunit 1 (NCBI) | insig. | 25 | 77 |
| | Phaeobacter inhibens DSM 17395 | PGA1_c10480 | | NADH-quinone oxidoreductase subunit H | no data | 25 | 73 |
| | Sinorhizobium meliloti 1021 | SMa1516 | | NuoH2 NADH:ubiquinone oxidoreductase subunit 1 (chain H) | insig. | 26 | 67 |
| | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.1990.1 | | NADH-ubiquinone oxidoreductase chain H (EC 1.6.5.3) | no data | 24 | 67 |
| | Rahnella sp. WP5 | EX31_RS19915 | | respiratory chain complex I subunit 1 family protein | insig. | 26 | 90 |
| | Bosea sp. OAE506 | ABIE41_RS17915 | | NADH-quinone oxidoreductase subunit NuoH | no data | 25 | 76 |
| | Methanococcus maripaludis JJ | MMJJ_RS06040 | | NADH-quinone oxidoreductase subunit H | strong | 26 | 87 |
| | Ralstonia sp. UNC404CL21Col | ABZR87_RS14845 | | NADH-quinone oxidoreductase subunit NuoH | no data | 28 | 76 |
| | Dinoroseobacter shibae DFL-12 | Dshi_1321 | | NADH dehydrogenase (quinone) (RefSeq) | no data | 23 | 83 |
| | Ralstonia solanacearum PSI07 | RPSI07_RS14370 | | NADH-quinone oxidoreductase subunit NuoH | no data | 27 | 76 |
| | Xanthobacter sp. DMC5 | GFF1243 | | NADH-quinone oxidoreductase subunit H | no data | 24 | 73 |
| | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS02940 | | NADH-quinone oxidoreductase subunit H | no data | 26 | 76 |
| | Ralstonia solanacearum UW163 | UW163_RS10785 | | NADH-quinone oxidoreductase subunit H | no data | 26 | 76 |
| | Rhodospirillum rubrum S1H | Rru_A1562 | | Respiratory-chain NADH dehydrogenase, subunit 1 (NCBI) | no data | 24 | 67 |
| | Methanococcus maripaludis S2 | MMP_RS08330 | | NADH-quinone oxidoreductase subunit H | strong | 26 | 87 |
| | Escherichia coli ECOR38 | HEPCGN_21060 | hyfC | hydrogenase 4 subunit HyfC | insig. | 28 | 73 |
| | Ralstonia solanacearum GMI1000 | RS_RS10310 | | NADH-quinone oxidoreductase subunit H | no data | 26 | 73 |
| | Sinorhizobium meliloti 1021 | SMc01921 | | NADH dehydrogenase subunit H | no data | 24 | 73 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS13975 | | NADH-quinone oxidoreductase subunit H | no data | 23 | 67 |
| | Rhodopseudomonas palustris CGA009 | TX73_015250 | | NADH-quinone oxidoreductase subunit NuoH | no data | 26 | 73 |
| | Azospirillum brasilense Sp245 | AZOBR_RS07200 | | NADH:ubiquinone oxidoreductase subunit H | no data | 24 | 67 |