| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Methanococcus maripaludis S2 | MMP_RS05950 | | nickel-dependent hydrogenase large subunit | strong | 100 | 100 |
| o | Methanococcus maripaludis JJ | MMJJ_RS08405 | | nickel-dependent hydrogenase large subunit | strong | 99 | 100 |
| | Methanococcus maripaludis JJ | MMJJ_RS06840 | | nickel-dependent hydrogenase large subunit | strong | 37 | 98 |
| | Methanococcus maripaludis S2 | MMP_RS07520 | | nickel-dependent hydrogenase large subunit | no data | 37 | 98 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1522 | | NADH-ubiquinone oxidoreductase chain 49kDa (RefSeq) | cofit | 35 | 96 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0430 | | Ech hydrogenase, subunit EchE, putative (TIGR) | sig. | 35 | 96 |
| | Escherichia coli ECOR38 | HEPCGN_21040 | hyfG | hydrogenase 4 catalytic subunit HyfG | insig. | 34 | 97 |
| | Escherichia coli ECRC100 | OKFHMN_21870 | hyfG | hydrogenase 4 catalytic subunit HyfG | insig. | 34 | 97 |
| | Escherichia coli ECRC101 | MCAODC_12400 | hyfG | hydrogenase 4 catalytic subunit HyfG | insig. | 34 | 97 |
| | Escherichia coli ECRC102 | NIAGMN_19640 | hyfG | hydrogenase 4 catalytic subunit HyfG | insig. | 34 | 97 |
| | Escherichia coli ECRC98 | JDDGAC_25815 | hyfG | hydrogenase 4 catalytic subunit HyfG | insig. | 34 | 97 |
| | Escherichia coli ECRC99 | KEDOAH_06350 | hyfG | hydrogenase 4 catalytic subunit HyfG | no data | 34 | 97 |
| | Escherichia coli ECOR27 | NOLOHH_13525 | hyfG | hydrogenase 4 catalytic subunit HyfG | insig. | 33 | 97 |
| | Dickeya dianthicola 67-19 | HGI48_RS07320 | | hydrogenase large subunit | insig. | 34 | 99 |
| | Dickeya dianthicola ME23 | DZA65_RS07830 | | hydrogenase large subunit | insig. | 34 | 99 |
| | Dickeya dadantii 3937 | DDA3937_RS07445 | | hydrogenase large subunit | insig. | 33 | 99 |
| | Rahnella sp. WP5 | EX31_RS19920 | | hydrogenase large subunit | insig. | 34 | 97 |
| | Rhodospirillum rubrum S1H | Rru_A0316 | | NADH-ubiquinone oxidoreductase (NCBI) | insig. | 33 | 97 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01239 | | Hydrogenase-4 component G | insig. | 32 | 97 |
| | Escherichia coli BL21 | ECD_02379 | | hydrogenase 4, subunit | insig. | 32 | 97 |
| | Escherichia coli BW25113 | b2487 | hyfG | hydrogenase 4, subunit (NCBI) | insig. | 32 | 97 |
| | Escherichia coli ECRC62 | BNILDI_12330 | hyfG | hydrogenase 4 catalytic subunit HyfG | insig. | 32 | 97 |
| | Azospirillum sp. SherDot2 | MPMX19_03510 | | Formate hydrogenlyase subunit 5 | insig. | 33 | 97 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU2291 | | carbon monoxide-induced hydrogenase CooH, putative (TIGR) | insig. | 31 | 96 |
| | Serratia liquefaciens MT49 | IAI46_12520 | | hydrogenase large subunit | insig. | 34 | 97 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF4714 | | Formate hydrogenlyase subunit 5 | cofit | 33 | 99 |
| | Enterobacter asburiae PDN3 | EX28DRAFT_2812 | | Ni,Fe-hydrogenase III large subunit | insig. | 32 | 99 |
| | Enterobacter sp. TBS_079 | MPMX20_03606 | | Formate hydrogenlyase subunit 5 | insig. | 32 | 99 |
| | Escherichia coli ECOR27 | NOLOHH_12435 | hycE | formate hydrogenlyase subunit HycE | insig. | 32 | 99 |
| | Escherichia coli ECRC100 | OKFHMN_20590 | hycE | formate hydrogenlyase subunit HycE | cofit | 32 | 99 |
| | Escherichia coli ECRC101 | MCAODC_11115 | hycE | formate hydrogenlyase subunit HycE | insig. | 32 | 99 |
| | Escherichia coli ECRC102 | NIAGMN_18360 | hycE | formate hydrogenlyase subunit HycE | cofit | 32 | 99 |
| | Escherichia coli ECRC62 | BNILDI_10985 | hycE | formate hydrogenlyase subunit HycE | insig. | 32 | 99 |
| | Escherichia coli ECRC98 | JDDGAC_24255 | hycE | formate hydrogenlyase subunit HycE | insig. | 32 | 99 |
| | Escherichia coli ECRC99 | KEDOAH_07545 | hycE | formate hydrogenlyase subunit HycE | no data | 32 | 99 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS15205 | | formate hydrogenlyase subunit HycE | insig. | 32 | 99 |
| | Escherichia coli BL21 | ECD_02571 | | hydrogenase 3, large subunit | insig. | 32 | 99 |
| | Escherichia coli ECOR38 | HEPCGN_19780 | hycE | formate hydrogenlyase subunit HycE | insig. | 32 | 99 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01013 | | Formate hydrogenlyase subunit 5 | insig. | 32 | 99 |
| | Escherichia coli BW25113 | b2721 | hycE | hydrogenase 3, large subunit (NCBI) | insig. | 32 | 99 |
| | Rhodospirillum rubrum S1H | Rru_A1425 | | NADH dehydrogenase (ubiquinone) (NCBI) | insig. | 29 | 96 |
| | Escherichia fergusonii Becca | EFB2_01202 | | Formate hydrogenlyase subunit 5 | cofit | 32 | 99 |
| | Klebsiella pneumoniae MKP103 | KDGMDA_02990 | | formate hydrogenlyase subunit HycE | insig. | 33 | 99 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_3189 | | NADH dehydrogenase (quinone) (RefSeq) | sig. | 31 | 96 |
| | Klebsiella michiganensis M5al | BWI76_RS22320 | | hydrogenase 3 large subunit | insig. | 32 | 99 |
| | Phocaeicola vulgatus CL09T03C04 | HMPREF1058_RS13325 | | NADH-quinone oxidoreductase subunit D | strong | 29 | 96 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS08530 | | NADH-quinone oxidoreductase subunit D | insig. | 29 | 96 |
| | Bacteroides thetaiotaomicron VPI-5482 | BT4065 | | NADH dehydrogenase I, chain D (NCBI ptt file) | strong | 28 | 96 |
| | Bacteroides ovatus ATCC 8483 | BACOVA_04860 | | respiratory-chain NADH dehydrogenase, 49 Kd subunit | strong | 27 | 96 |
| | Acinetobacter baumannii LAC-4 | RR41_RS15500 | | NADH-quinone oxidoreductase subunit C/D | no data | 27 | 96 |
| | Synechococcus elongatus PCC 7942 | Synpcc7942_1743 | ndhH | NAD(P)H-quinone oxidoreductase subunit H | no data | 28 | 96 |
| o | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.1986.1 | | NADH-ubiquinone oxidoreductase chain D (EC 1.6.5.3) | no data | 27 | 96 |
| | Bacteroides stercoris CC31F | HMPREF1181_RS09010 | | NADH-quinone oxidoreductase subunit D | sig. | 28 | 96 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS17200 | | nickel-dependent hydrogenase large subunit | insig. | 26 | 94 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS17725 | | nickel-dependent hydrogenase large subunit | insig. | 26 | 94 |
| | Azospirillum brasilense Sp245 | AZOBR_RS14510 | | hydrogenase expression protein HypE | insig. | 28 | 96 |
| | Acinetobacter radioresistens SK82 | MPMX26_02553 | | NADH-quinone oxidoreductase subunit C/D | no data | 27 | 96 |
| | Sinorhizobium meliloti 1021 | SMa1529 | | NuoD2 NADH I chain D | insig. | 26 | 96 |
| o | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS02960 | | NADH-quinone oxidoreductase subunit NuoD | no data | 26 | 96 |
| o | Ralstonia solanacearum UW163 | UW163_RS10765 | | NADH-quinone oxidoreductase subunit NuoD | no data | 26 | 96 |
| o | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS10150 | | NADH-quinone oxidoreductase subunit D | no data | 29 | 96 |
| o | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_18290 | | NADH dehydrogenase subunit D | strong | 27 | 96 |
| o | Methylophilus sp. DMC18 | GFF943 | | NADH-quinone oxidoreductase subunit D | no data | 26 | 95 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS01050 | | hydrogenase expression protein HypE | insig. | 25 | 96 |
| | Synechocystis sp000284455 PCC 6803 | SGL_RS08920 | | NAD(P)H-quinone oxidoreductase subunit H | no data | 29 | 96 |
| o | Acidovorax sp. GW101-3H11 | Ac3H11_1449 | | NADH-ubiquinone oxidoreductase chain D (EC 1.6.5.3) | no data | 26 | 96 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1596 | | NADH dehydrogenase (quinone) (RefSeq) | strong | 27 | 96 |
| o | Ralstonia solanacearum PSI07 | RPSI07_RS14350 | | NADH-quinone oxidoreductase subunit NuoD | no data | 26 | 96 |
| o | Paraburkholderia sabiae LMG 24235 | QEN71_RS24135 | | NADH-quinone oxidoreductase subunit D | no data | 25 | 96 |
| o | Cupriavidus basilensis FW507-4G11 | RR42_RS05525 | | NADH dehydrogenase subunit D | no data | 26 | 96 |
| o | Dechlorosoma suillum PS | Dsui_3047 | | NADH dehydrogenase I, D subunit | no data | 27 | 95 |
| o | Herbaspirillum seropedicae SmR1 | HSERO_RS08835 | | NADH dehydrogenase subunit D | no data | 27 | 96 |
| o | Ralstonia solanacearum GMI1000 | RS_RS10330 | | NADH-quinone oxidoreductase subunit NuoD | no data | 25 | 96 |
| o | Burkholderia phytofirmans PsJN | BPHYT_RS06640 | | NADH-quinone oxidoreductase subunit D | no data | 25 | 96 |
| o | Variovorax sp. OAS795 | ABID97_RS20480 | | NADH-quinone oxidoreductase subunit D | no data | 25 | 96 |
| o | Castellaniella sp019104865 MT123 | ABCV34_RS08735 | | NADH-quinone oxidoreductase subunit D | no data | 26 | 96 |
| | Azospirillum sp. SherDot2 | MPMX19_01743 | | NADH-quinone oxidoreductase subunit D | no data | 28 | 95 |
| | Sphingobium sp. HT1-2 | GFF2116 | | NADH-ubiquinone oxidoreductase chain D (EC 1.6.5.3) | no data | 26 | 96 |
| o | Dyella japonica UNC79MFTsu3.2 | ABZR86_RS06100 | | NADH-quinone oxidoreductase subunit D | no data | 24 | 95 |
| o | Variovorax sp. SCN45 | GFF4753 | | NADH-ubiquinone oxidoreductase chain D (EC 1.6.5.3) | no data | 25 | 96 |
| o | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_04570 | | NADH dehydrogenase subunit D | no data | 25 | 96 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS00890 | | NADH-quinone oxidoreductase subunit D | no data | 24 | 96 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS01115 | | NADH-quinone oxidoreductase subunit D | no data | 24 | 96 |
| o | Lysobacter sp. OAE881 | ABIE51_RS08325 | | NADH-quinone oxidoreductase subunit D | no data | 25 | 96 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_0709 | | NADH dehydrogenase subunit D (EC 1.6.5.3) | no data | 25 | 96 |
| o | Ralstonia sp. UNC404CL21Col | ABZR87_RS14865 | | NADH-quinone oxidoreductase subunit D | no data | 25 | 96 |
| o | Paraburkholderia graminis OAS925 | ABIE53_001593 | | NADH-quinone oxidoreductase subunit D | no data | 24 | 96 |
| | Azospirillum brasilense Sp245 | AZOBR_RS07180 | | NADH dehydrogenase | no data | 27 | 95 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS23545 | | NADH dehydrogenase subunit D | strong | 26 | 94 |
| | Caulobacter crescentus NA1000 | CCNA_02029 | | NADH-quinone oxidoreductase chain D | no data | 26 | 96 |
| | Caulobacter crescentus NA1000 Δfur | CCNA_02029 | | NADH-quinone oxidoreductase chain D | no data | 26 | 96 |
| o | Rhodanobacter sp. FW510-T8 | OKGIIK_05780 | nuoD | NADH-quinone oxidoreductase subunit D | no data | 24 | 96 |
| | Kangiella aquimarina DSM 16071 | B158DRAFT_0124 | | NADH dehydrogenase subunit D (EC 1.6.5.3) | strong | 25 | 96 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS13995 | | NADH-quinone oxidoreductase subunit D | no data | 28 | 96 |
| | Mycobacterium tuberculosis H37Rv | Rv3148 | | Probable NADH dehydrogenase I (chain D) NuoD (NADH-ubiquinone oxidoreductase chain D) | strong | 26 | 96 |
| | Rhodopseudomonas palustris CGA009 | TX73_015280 | | NADH-quinone oxidoreductase subunit D | no data | 26 | 96 |
| | Xanthobacter sp. DMC5 | GFF1247 | | NADH-quinone oxidoreductase subunit D | no data | 27 | 96 |
| | Agrobacterium fabrum C58 | Atu1272 | | NADH ubiquinone oxidoreductase chain D | no data | 27 | 96 |
| | Xanthobacter sp. DMC5 | GFF2061 | | Formate hydrogenlyase subunit 5 | insig. | 26 | 96 |
| o | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF3684 | | NADH-ubiquinone oxidoreductase chain D (EC 1.6.5.3) | cofit | 25 | 96 |