| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Xanthobacter sp. DMC5 | GFF2058 | | Formate hydrogenlyase subunit 4 | insig. | 100 | 100 |
| o | Azospirillum brasilense Sp245 | AZOBR_RS14525 | | formate hydrogenlyase | sig. | 70 | 92 |
| o | Magnetospirillum magneticum AMB-1 | AMB_RS01065 | | formate hydrogenlyase | insig. | 63 | 99 |
| o | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS11715 | | NADH-quinone oxidoreductase subunit H | insig. | 49 | 88 |
| o | Rhodanobacter denitrificans MT42 | LRK55_RS17525 | | NADH-quinone oxidoreductase subunit H | insig. | 49 | 88 |
| o | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS17300 | | NADH-quinone oxidoreductase subunit H | sig. | 49 | 88 |
| o | Rhodanobacter sp. FW510-T8 | OKGIIK_07590 | hyfC | formate hydrogenlyase | insig. | 48 | 88 |
| o | Mycobacterium tuberculosis H37Rv | Rv0084 | | Possible formate hydrogenlyase HycD (FHL) | insig. | 48 | 90 |
| o | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF4715 | | Formate hydrogenlyase subunit 4 | insig. | 36 | 88 |
| o | Escherichia coli ECRC62 | BNILDI_10980 | hycD | formate hydrogenlyase subunit HycD | insig. | 35 | 90 |
| o | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01012 | | Formate hydrogenlyase subunit 4 | insig. | 35 | 90 |
| o | Escherichia coli BW25113 | b2722 | hycD | hydrogenase 3, membrane subunit (NCBI) | sig. | 35 | 90 |
| o | Escherichia coli BL21 | ECD_02572 | | hydrogenase 3, membrane subunit | insig. | 35 | 90 |
| o | Escherichia coli ECOR27 | NOLOHH_12430 | hycD | formate hydrogenlyase subunit HycD | insig. | 35 | 90 |
| o | Escherichia coli ECOR38 | HEPCGN_19775 | hycD | formate hydrogenlyase subunit HycD | insig. | 35 | 90 |
| o | Klebsiella pneumoniae MRSN742743 | KFA93_RS18815 | | respiratory chain complex I subunit 1 family protein | insig. | 35 | 90 |
| o | Escherichia coli ECRC100 | OKFHMN_20585 | hycD | formate hydrogenlyase subunit HycD | cofit | 35 | 90 |
| o | Escherichia coli ECRC101 | MCAODC_11110 | hycD | formate hydrogenlyase subunit HycD | insig. | 35 | 90 |
| o | Escherichia coli ECRC102 | NIAGMN_18355 | hycD | formate hydrogenlyase subunit HycD | insig. | 35 | 90 |
| o | Escherichia coli ECRC98 | JDDGAC_24250 | hycD | formate hydrogenlyase subunit HycD | insig. | 35 | 90 |
| o | Escherichia coli ECRC99 | KEDOAH_07550 | hycD | formate hydrogenlyase subunit HycD | no data | 35 | 90 |
| o | Enterobacter asburiae PDN3 | EX28DRAFT_2813 | | Formate hydrogenlyase subunit 4 | insig. | 36 | 90 |
| o | Klebsiella pneumoniae MKP103 | KDGMDA_02995 | | hydrogenase 3 membrane subunit | insig. | 35 | 90 |
| o | Escherichia fergusonii Becca | EFB2_01201 | | Formate hydrogenlyase subunit 4 | cofit | 35 | 90 |
| o | Escherichia coli Nissle 1917 | ECOLIN_RS15210 | | formate hydrogenlyase subunit HycD | no data | 35 | 90 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS17185 | | NADH-quinone oxidoreductase subunit H | cofit | 34 | 90 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS17710 | | NADH-quinone oxidoreductase subunit H | insig. | 34 | 90 |
| | Klebsiella michiganensis M5al | BWI76_RS22325 | | hydrogenase 3 membrane subunit | insig. | 36 | 72 |
| | Escherichia coli BW25113 | b2483 | hyfC | hydrogenase 4 membrane subunit (VIMSS) | insig. | 37 | 76 |
| | Escherichia coli ECRC100 | OKFHMN_21890 | hyfC | hydrogenase 4 subunit HyfC | cofit | 36 | 76 |
| | Escherichia coli ECRC101 | MCAODC_12420 | hyfC | hydrogenase 4 subunit HyfC | insig. | 36 | 76 |
| | Escherichia coli ECRC102 | NIAGMN_19660 | hyfC | hydrogenase 4 subunit HyfC | cofit | 36 | 76 |
| | Escherichia coli ECRC98 | JDDGAC_25835 | hyfC | hydrogenase 4 subunit HyfC | insig. | 36 | 76 |
| | Escherichia coli ECRC99 | KEDOAH_06330 | hyfC | hydrogenase 4 subunit HyfC | no data | 36 | 76 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01245 | | Hydrogenase-4 component C | insig. | 36 | 76 |
| | Escherichia coli ECRC62 | BNILDI_12360 | hyfC | hydrogenase 4 subunit HyfC | cofit | 36 | 76 |
| | Enterobacter sp. TBS_079 | MPMX20_03607 | | Formate hydrogenlyase subunit 4 | insig. | 38 | 77 |
| | Escherichia coli ECOR27 | NOLOHH_13550 | hyfC | hydrogenase 4 subunit HyfC | insig. | 36 | 76 |
| | Dickeya dianthicola 67-19 | HGI48_RS07340 | | respiratory chain complex I subunit 1 family protein | insig. | 35 | 88 |
| | Dickeya dianthicola ME23 | DZA65_RS07850 | | respiratory chain complex I subunit 1 family protein | insig. | 34 | 88 |
| | Escherichia coli ECOR38 | HEPCGN_21060 | hyfC | hydrogenase 4 subunit HyfC | insig. | 37 | 76 |
| | Rahnella sp. WP5 | EX31_RS19915 | | respiratory chain complex I subunit 1 family protein | insig. | 34 | 85 |
| | Azospirillum sp. SherDot2 | MPMX19_03514 | | Formate hydrogenlyase subunit 4 | insig. | 35 | 87 |
| | Dickeya dadantii 3937 | DDA3937_RS07465 | | respiratory chain complex I subunit 1 family protein | insig. | 35 | 76 |
| | Serratia liquefaciens MT49 | IAI46_12525 | | respiratory chain complex I subunit 1 family protein | insig. | 34 | 85 |
| | Rhodospirillum rubrum S1H | Rru_A0317 | | Respiratory-chain NADH dehydrogenase, subunit 1 (NCBI) | insig. | 33 | 78 |
| | Rhodospirillum rubrum S1H | Rru_A1421 | | Respiratory-chain NADH dehydrogenase, subunit 1 (NCBI) | insig. | 32 | 88 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_3193 | | respiratory-chain NADH dehydrogenase subunit 1 (RefSeq) | no data | 32 | 76 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU2287 | | hydrogenase, CooK subunit, selenocysteine-containing, putative (TIGR) | insig. | 31 | 72 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1519 | | respiratory-chain NADH dehydrogenase subunit 1 (RefSeq) | cofit | 26 | 94 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0433 | | Ech hydrogenase, subunit EchB, putative (TIGR) | strong | 24 | 71 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS08525 | | NADH-quinone oxidoreductase subunit NuoH | insig. | 26 | 74 |
| | Phocaeicola vulgatus CL09T03C04 | HMPREF1058_RS13320 | | NADH-quinone oxidoreductase subunit NuoH | strong | 26 | 74 |
| | Bacteroides thetaiotaomicron VPI-5482 | BT4064 | | NADH dehydrogenase I, chain H (NCBI ptt file) | sig. | 25 | 72 |
| | Azospirillum sp. SherDot2 | MPMX19_01739 | | NADH-quinone oxidoreductase subunit H | no data | 25 | 77 |
| | Rhodospirillum rubrum S1H | Rru_A1562 | | Respiratory-chain NADH dehydrogenase, subunit 1 (NCBI) | no data | 26 | 71 |
| | Dechlorosoma suillum PS | Dsui_3043 | | NADH:ubiquinone oxidoreductase subunit 1 (chain H) | no data | 28 | 76 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS15755 | | NADH-quinone oxidoreductase subunit NuoH | no data | 26 | 69 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS08970 | | NADH-quinone oxidoreductase subunit NuoH | no data | 26 | 71 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_05800 | nuoH | NADH-quinone oxidoreductase subunit NuoH | no data | 26 | 78 |
| | Azospirillum brasilense Sp245 | AZOBR_RS07200 | | NADH:ubiquinone oxidoreductase subunit H | no data | 25 | 69 |
| | Synechocystis sp000284455 PCC 6803 | SGL_RS17000 | | NADH-quinone oxidoreductase subunit NuoH | no data | 29 | 67 |
| | Bacteroides ovatus ATCC 8483 | BACOVA_04859 | | NADH dehydrogenase | sig. | 24 | 72 |
| | Bacteroides stercoris CC31F | HMPREF1181_RS09015 | | NADH-quinone oxidoreductase subunit NuoH | sig. | 26 | 76 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1597 | | NADH dehydrogenase (quinone) (RefSeq) | cofit | 25 | 83 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS13975 | | NADH-quinone oxidoreductase subunit H | no data | 27 | 74 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS00870 | | NADH-quinone oxidoreductase subunit NuoH | no data | 26 | 77 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS01095 | | NADH-quinone oxidoreductase subunit NuoH | no data | 26 | 77 |
| | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.1990.1 | | NADH-ubiquinone oxidoreductase chain H (EC 1.6.5.3) | no data | 27 | 71 |
| | Methylophilus sp. DMC18 | GFF947 | | NADH-quinone oxidoreductase subunit H | no data | 29 | 78 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS17135 | | NADH-quinone oxidoreductase subunit NuoH | no data | 26 | 78 |
| | Synechococcus elongatus PCC 7942 | Synpcc7942_1343 | ndhA | NADH dehydrogenase subunit H | no data | 27 | 70 |