| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Enterobacter sp. TBS_079 | MPMX20_03608 | | Hydrogenase-4 component B | insig. | 100 | 100 |
| o | Enterobacter asburiae PDN3 | EX28DRAFT_2814 | | Formate hydrogenlyase subunit 3/Multisubunit Na+/H+ antiporter, MnhD subunit | insig. | 92 | 100 |
| o | Escherichia coli Nissle 1917 | ECOLIN_RS15215 | | formate hydrogenlyase subunit 3 | insig. | 77 | 100 |
| o | Escherichia fergusonii Becca | EFB2_01200 | | NAD(P)H-quinone oxidoreductase subunit 2, chloroplastic | cofit | 76 | 100 |
| o | Escherichia coli ECRC62 | BNILDI_10975 | hycC | formate hydrogenlyase subunit 3 | insig. | 76 | 100 |
| o | Escherichia coli BL21 | ECD_02573 | | hydrogenase 3, membrane subunit | insig. | 76 | 100 |
| o | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01011 | | NAD(P)H-quinone oxidoreductase subunit 2, chloroplastic | insig. | 76 | 100 |
| o | Escherichia coli ECOR27 | NOLOHH_12425 | hycC | formate hydrogenlyase subunit 3 | insig. | 76 | 100 |
| o | Escherichia coli ECOR38 | HEPCGN_19770 | hycC | formate hydrogenlyase subunit 3 | insig. | 76 | 100 |
| o | Escherichia coli BW25113 | b2723 | hycC | NADH dehydrogenase subunit N (NCBI) | sig. | 76 | 100 |
| o | Escherichia coli ECRC100 | OKFHMN_20580 | hycC | formate hydrogenlyase subunit 3 | cofit | 76 | 100 |
| o | Escherichia coli ECRC101 | MCAODC_11105 | hycC | formate hydrogenlyase subunit 3 | insig. | 76 | 100 |
| o | Escherichia coli ECRC102 | NIAGMN_18350 | hycC | formate hydrogenlyase subunit 3 | cofit | 76 | 100 |
| o | Escherichia coli ECRC98 | JDDGAC_24245 | hycC | formate hydrogenlyase subunit 3 | insig. | 76 | 100 |
| o | Escherichia coli ECRC99 | KEDOAH_07555 | hycC | formate hydrogenlyase subunit 3 | no data | 76 | 100 |
| o | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF4716 | | Formate hydrogenlyase subunit 3 | insig. | 79 | 100 |
| o | Klebsiella pneumoniae MKP103 | KDGMDA_03000 | | formate hydrogenlyase subunit 3 | insig. | 69 | 100 |
| o | Klebsiella michiganensis M5al | BWI76_RS22330 | | formate hydrogenlyase subunit 3 | insig. | 70 | 100 |
| o | Rahnella sp. WP5 | EX31_RS19910 | | NADH dehydrogenase | insig. | 47 | 94 |
| o | Serratia liquefaciens MT49 | IAI46_12530 | | proton-conducting membrane transporter | no data | 46 | 94 |
| | Escherichia coli BL21 | ECD_02374 | | hydrogenase 4, membrane subunit | insig. | 38 | 83 |
| | Escherichia coli ECOR27 | NOLOHH_13555 | hyfB | hydrogenase 4 subunit B | insig. | 38 | 83 |
| | Escherichia coli ECRC100 | OKFHMN_21895 | hyfB | hydrogenase 4 subunit B | cofit | 38 | 83 |
| | Escherichia coli ECRC101 | MCAODC_12425 | hyfB | hydrogenase 4 subunit B | insig. | 38 | 83 |
| | Escherichia coli ECRC102 | NIAGMN_19665 | hyfB | hydrogenase 4 subunit B | insig. | 38 | 83 |
| | Escherichia coli ECRC62 | BNILDI_12365 | hyfB | hydrogenase 4 subunit B | insig. | 38 | 83 |
| | Escherichia coli ECRC98 | JDDGAC_25840 | hyfB | hydrogenase 4 subunit B | insig. | 38 | 83 |
| | Escherichia coli ECRC99 | KEDOAH_06325 | hyfB | hydrogenase 4 subunit B | no data | 38 | 83 |
| | Escherichia coli BW25113 | b2482 | hyfB | NADH dehydrogenase subunit N (NCBI) | insig. | 38 | 83 |
| | Escherichia coli ECOR38 | HEPCGN_21065 | hyfB | hydrogenase 4 subunit B | insig. | 38 | 83 |
| | Azospirillum sp. SherDot2 | MPMX19_03515 | | Hydrogenase-4 component B | insig. | 37 | 83 |
| o | Dickeya dianthicola 67-19 | HGI48_RS07345 | | hydrogenase 4 subunit B | insig. | 41 | 81 |
| o | Dickeya dianthicola ME23 | DZA65_RS07855 | | hydrogenase 4 subunit B | insig. | 41 | 81 |
| | Dickeya dadantii 3937 | DDA3937_RS07470 | | hydrogenase 4 subunit B | insig. | 41 | 81 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01246 | | Hydrogenase-4 component B | insig. | 43 | 60 |
| o | Xanthobacter sp. DMC5 | GFF2057 | | Hydrogenase-4 component B | insig. | 32 | 82 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS01070 | | hydrogenase 4 subunit B | cofit | 37 | 59 |
| o | Rhodanobacter sp. FW510-T8 | OKGIIK_07585 | hyfB | hydrogenase 4 subunit B | insig. | 32 | 81 |
| o | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS17305 | | hydrogenase 4 subunit B | strong | 32 | 81 |
| o | Rhodanobacter denitrificans MT42 | LRK55_RS17530 | | hydrogenase 4 subunit B | cofit | 32 | 81 |
| o | Rhodospirillum rubrum S1H | Rru_A0315 | | NADH dehydrogenase (quinone) (NCBI) | insig. | 31 | 93 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS11710 | | hydrogenase 4 subunit B | insig. | 32 | 79 |
| o | Mycobacterium tuberculosis H37Rv | Rv0083 | | Probable oxidoreductase | insig. | 32 | 69 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_3194 | | NADH dehydrogenase (quinone) (RefSeq) | strong | 27 | 76 |
| | Rhodospirillum rubrum S1H | Rru_A0320 | | NADH dehydrogenase (quinone) (NCBI) | insig. | 30 | 53 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS17115 | | NADH-quinone oxidoreductase subunit L | no data | 28 | 66 |
| | Rhodospirillum rubrum S1H | Rru_A1420 | | NADH dehydrogenase (quinone) (NCBI) | insig. | 27 | 57 |
| | Rhodospirillum rubrum S1H | Rru_A0314 | | NADH dehydrogenase (quinone) (NCBI) | cofit | 28 | 53 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01240 | | NAD(P)H-quinone oxidoreductase subunit 2, chloroplastic | insig. | 29 | 53 |
| | Escherichia coli ECOR27 | NOLOHH_13530 | hyfF | hydrogenase 4 subunit F | insig. | 29 | 53 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU2286 | | hydrogenase, CooM subunit, putative (TIGR) | strong | 27 | 75 |
| | Escherichia coli BL21 | ECD_02378 | | hydrogenase 4, membrane subunit | insig. | 29 | 53 |
| | Escherichia coli BW25113 | b2486 | hyfF | NADH dehydrogenase subunit N (NCBI) | insig. | 29 | 53 |
| | Escherichia coli ECRC99 | KEDOAH_06345 | hyfF | hydrogenase 4 subunit F | no data | 29 | 53 |
| | Escherichia coli ECRC100 | OKFHMN_21875 | hyfF | hydrogenase 4 subunit F | cofit | 29 | 53 |
| | Escherichia coli ECRC101 | MCAODC_12405 | hyfF | hydrogenase 4 subunit F | insig. | 29 | 53 |
| | Escherichia coli ECRC102 | NIAGMN_19645 | hyfF | hydrogenase 4 subunit F | insig. | 29 | 53 |
| | Escherichia coli ECRC98 | JDDGAC_25820 | hyfF | hydrogenase 4 subunit F | insig. | 29 | 53 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_3194 | | NADH dehydrogenase (quinone) (RefSeq) | strong | 29 | 63 |
| | Dickeya dianthicola 67-19 | HGI48_RS07325 | | hydrogenase 4 subunit F | insig. | 27 | 53 |
| | Dickeya dianthicola ME23 | DZA65_RS07835 | | hydrogenase 4 subunit F | insig. | 27 | 53 |
| | Dickeya dadantii 3937 | DDA3937_RS07450 | | hydrogenase 4 subunit F | insig. | 28 | 53 |
| | Escherichia coli ECOR38 | HEPCGN_21045 | hyfF | hydrogenase 4 subunit F | insig. | 29 | 53 |
| | Azospirillum sp. SherDot2 | MPMX19_03511 | | NAD(P)H-quinone oxidoreductase subunit 2, chloroplastic | insig. | 28 | 53 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS23590 | | NADH-quinone oxidoreductase subunit L | no data | 27 | 62 |
| | Lysobacter sp. OAE881 | ABIE51_RS09895 | | monovalent cation/H+ antiporter subunit A | insig. | 28 | 78 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS00910 | | monovalent cation/H+ antiporter subunit A | cofit | 34 | 38 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS07595 | | monovalent cation/H+ antiporter subunit A | strong | 29 | 42 |
| | Escherichia coli ECRC62 | BNILDI_12335 | hyfF | hydrogenase 4 subunit F | insig. | 28 | 53 |
| | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.589.1 | | hypothetical protein | insig. | 32 | 44 |
| | Pseudomonas stutzeri RCH2 | Psest_2851 | | NADH:ubiquinone oxidoreductase subunit 5 (chain L)/Multisubunit Na+/H+ antiporter, MnhA subunit | strong | 31 | 46 |
| | Synechocystis sp000284455 PCC 6803 | SGL_RS03225 | | NAD(P)H-quinone oxidoreductase subunit 4 | strong | 30 | 34 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS07335 | | monovalent cation/H+ antiporter subunit A | cofit | 32 | 38 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_04220 | | NADH-quinone oxidoreductase subunit L | insig. | 27 | 66 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_14260 | | NADH-quinone oxidoreductase subunit L | no data | 25 | 65 |
| | Synechococcus elongatus PCC 7942 | Synpcc7942_1439 | ndhD2 | NAD(P)H-quinone oxidoreductase subunit D | strong | 30 | 42 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS17195 | | proton-conducting transporter membrane subunit | insig. | 34 | 32 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS17720 | | NADH dehydrogenase | insig. | 34 | 32 |
| | Rhodospirillum rubrum S1H | Rru_A1420 | | NADH dehydrogenase (quinone) (NCBI) | insig. | 28 | 53 |
| | Sinorhizobium meliloti 1021 | SMa1538 | | monovalent cation/H+ antiporter subunit D | insig. | 31 | 53 |
| | Pseudomonas stutzeri RCH2 | Psest_3887 | | Formate hydrogenlyase subunit 3/Multisubunit Na+/H+ antiporter, MnhD subunit | insig. | 32 | 48 |
| | Azospirillum sp. SherDot2 | MPMX19_01735 | | NADH-quinone oxidoreductase subunit L | no data | 25 | 67 |
| | Xanthobacter sp. DMC5 | GFF2060 | | NAD(P)H-quinone oxidoreductase subunit 2, chloroplastic | insig. | 28 | 48 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1603 | | putative monovalent cation/H+ antiporter subunit D (RefSeq) | strong | 27 | 52 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU2286 | | hydrogenase, CooM subunit, putative (TIGR) | strong | 26 | 66 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_14045 | | Cation:proton antiporter | cofit | 31 | 48 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF2658 | | Na(+) H(+) antiporter subunit A; Na(+) H(+) antiporter subunit B | cofit | 28 | 46 |
| | Marinobacter adhaerens HP15 | HP15_2590 | | monovalent cation/H+ antiporter subunit D | sig. | 25 | 60 |
| | Sinorhizobium meliloti 1021 | SMa1541 | | monovalent cation/H+ antiporter subunit D | insig. | 27 | 59 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS17210 | | proton-conducting transporter membrane subunit | insig. | 30 | 40 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS17735 | | hypothetical protein | insig. | 30 | 40 |
| | Dinoroseobacter shibae DFL-12 | Dshi_0731 | | NADH dehydrogenase (quinone) (RefSeq) | strong | 30 | 32 |
| | Dickeya dadantii 3937 | DDA3937_RS07460 | | hydrogenase 4 subunit D | sig. | 27 | 76 |
| | Synechococcus elongatus PCC 7942 | Synpcc7942_1977 | ndhF1 | NAD(P)H-quinone oxidoreductase subunit F | strong | 27 | 55 |
| | Dickeya dianthicola 67-19 | HGI48_RS14260 | | NADH-quinone oxidoreductase subunit L | strong | 30 | 54 |
| | Marinobacter adhaerens HP15 | HP15_2581 | | monovalent cation/H+ antiporter subunit A | strong | 31 | 43 |
| | Dickeya dianthicola ME23 | DZA65_RS14935 | | NADH-quinone oxidoreductase subunit L | no data | 30 | 54 |
| | Acidovorax sp. GW101-3H11 | Ac3H11_2582 | | Na(+) H(+) antiporter subunit A; Na(+) H(+) antiporter subunit B | strong | 31 | 49 |
| | Acinetobacter baumannii LAC-4 | RR41_RS17265 | | monovalent cation/H+ antiporter subunit A | no data | 29 | 46 |
| | Azospirillum sp. SherDot2 | MPMX19_04697 | | NAD(P)H-quinone oxidoreductase subunit 2, chloroplastic | cofit | 31 | 44 |