| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Xanthobacter sp. DMC5 | GFF4442 | | putative Ni/Fe-hydrogenase B-type cytochrome subunit | insig. | 100 | 100 |
| o | Azospirillum sp. SherDot2 | MPMX19_05286 | | putative Ni/Fe-hydrogenase B-type cytochrome subunit | insig. | 59 | 96 |
| o | Variovorax sp. OAS795 | ABID97_RS13670 | | Ni/Fe-hydrogenase, b-type cytochrome subunit | insig. | 57 | 96 |
| o | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF2227 | | Ni,Fe-hydrogenase I cytochrome b subunit | insig. | 57 | 95 |
| o | Rhodopseudomonas palustris CGA009 | TX73_004965 | | Ni/Fe-hydrogenase, b-type cytochrome subunit | insig. | 55 | 93 |
| o | Rhodospirillum rubrum S1H | Rru_A1163 | | Nickel-dependent hydrogenase b-type cytochrome subunit (NCBI) | insig. | 54 | 91 |
| o | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF2523 | | Ni,Fe-hydrogenase I cytochrome b subunit | insig. | 52 | 87 |
| o | Escherichia coli ECOR27 | NOLOHH_21705 | hyaC | Ni/Fe-hydrogenase b-type cytochrome subunit | insig. | 48 | 88 |
| o | Escherichia coli BL21 | ECD_00977 | | hydrogenase 1, b-type cytochrome subunit | insig. | 48 | 88 |
| o | Escherichia coli ECOR38 | HEPCGN_23370 | hyaC | Ni/Fe-hydrogenase b-type cytochrome subunit | insig. | 48 | 88 |
| o | Escherichia coli ECRC100 | OKFHMN_04800 | hyaC | Ni/Fe-hydrogenase b-type cytochrome subunit | cofit | 48 | 88 |
| o | Escherichia coli ECRC101 | MCAODC_24185 | hyaC | Ni/Fe-hydrogenase b-type cytochrome subunit | insig. | 48 | 88 |
| o | Escherichia coli ECRC102 | NIAGMN_23050 | hyaC | Ni/Fe-hydrogenase b-type cytochrome subunit | insig. | 48 | 88 |
| o | Escherichia coli ECRC62 | BNILDI_19870 | hyaC | Ni/Fe-hydrogenase b-type cytochrome subunit | insig. | 48 | 88 |
| o | Escherichia coli ECRC98 | JDDGAC_08410 | hyaC | Ni/Fe-hydrogenase b-type cytochrome subunit | insig. | 48 | 88 |
| o | Escherichia coli ECRC99 | KEDOAH_22945 | hyaC | Ni/Fe-hydrogenase b-type cytochrome subunit | no data | 48 | 88 |
| o | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_02692 | | putative Ni/Fe-hydrogenase 1 B-type cytochrome subunit | insig. | 48 | 88 |
| o | Escherichia coli BW25113 | b0974 | hyaC | hydrogenase 1, b-type cytochrome subunit (NCBI) | sig. | 48 | 88 |
| o | Escherichia fergusonii Becca | EFB2_03097 | | putative Ni/Fe-hydrogenase 1 B-type cytochrome subunit | insig. | 49 | 88 |
| o | Escherichia coli Nissle 1917 | ECOLIN_RS05120 | | Ni/Fe-hydrogenase b-type cytochrome subunit | insig. | 49 | 88 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF2789 | | Ni,Fe-hydrogenase I cytochrome b subunit | insig. | 49 | 91 |
| | Shewanella loihica PV-4 | Shew_1763 | | Ni/Fe-hydrogenase, b-type cytochrome subunit (RefSeq) | insig. | 34 | 83 |
| | Shewanella oneidensis MR-1 | SO2097 | hydC | quinone-reactive Ni/Fe hydrogenase, cytochrome b subunit (NCBI ptt file) | sig. | 28 | 86 |
| | Shewanella sp. ANA-3 | Shewana3_1878 | | Ni/Fe-hydrogenase, b-type cytochrome subunit (RefSeq) | insig. | 27 | 86 |
| | Shewanella oneidensis MR-1 | SO2726 | | cytochrome b, putative (NCBI ptt file) | insig. | 22 | 89 |
| | Shewanella amazonensis SB2B | Sama_1677 | | quinone-reactive Ni/Fe hydrogenase, cytochrome b subunit (RefSeq) | insig. | 28 | 93 |
| | Shewanella sp. ANA-3 | Shewana3_2510 | | cytochrome B561 (RefSeq) | insig. | 22 | 89 |
| | Variovorax sp. SCN45 | GFF3647 | | Cytochrome b | insig. | 26 | 97 |
| | Pseudomonas stutzeri RCH2 | Psest_4239 | | Cytochrome b | sig. | 24 | 86 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_05140 | | Thiosulfate reductase cytochrome b subunit | insig. | 26 | 77 |
| | Alteromonas macleodii MIT1002 | MIT1002_01464 | | Ni/Fe-hydrogenase, b-type cytochrome subunit | insig. | 24 | 83 |
| | Rahnella sp. WP5 | EX31_RS18880 | | thioredoxin reductase | insig. | 23 | 86 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF2921 | | Cytochrome b | insig. | 24 | 84 |
| | Shewanella loihica PV-4 | Shew_2692 | | cytochrome B561 (RefSeq) | insig. | 20 | 89 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS35670 | | cytochrome B oxidoreductase | insig. | 25 | 88 |
| | Variovorax sp. OAS795 | ABID97_RS00595 | | cytochrome b/b6 domain-containing protein | insig. | 23 | 84 |
| | Dechlorosoma suillum PS | Dsui_2247 | | cytochrome b | no data | 24 | 86 |
| | Dickeya dianthicola 67-19 | HGI48_RS01125 | | cytochrome b/b6 domain-containing protein | insig. | 26 | 76 |
| | Paraburkholderia graminis OAS925 | ABIE53_002406 | | thiosulfate reductase cytochrome b subunit | insig. | 23 | 73 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF4451 | | Thiosulfate reductase cytochrome B subunit (membrane anchoring protein) | insig. | 26 | 73 |
| | Rhodopseudomonas palustris CGA009 | TX73_001155 | | cytochrome b/b6 domain-containing protein | insig. | 23 | 72 |
| | Pseudomonas sp. BP01 | JOY50_RS15635 | | cytochrome b/b6 domain-containing protein | insig. | 22 | 81 |
| | Sphingobium sp. HT1-2 | GFF721 | | Thiosulfate reductase cytochrome B subunit (membrane anchoring protein) | cofit | 25 | 83 |
| | Xanthobacter sp. DMC5 | GFF1202 | | Putative protein-methionine-sulfoxide reductase subunit YedZ1 | insig. | 23 | 77 |
| | Variovorax sp. SCN45 | GFF1237 | | Methionine sulfoxide reductase cytochrome b subunit | insig. | 24 | 89 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1695 | | cytochrome B561 (RefSeq) | insig. | 26 | 75 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS06605 | | thioredoxin reductase | insig. | 25 | 81 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS33180 | | cytochrome b/b6 domain-containing protein | insig. | 24 | 71 |
| | Dyella japonica UNC79MFTsu3.2 | ABZR86_RS04290 | | cytochrome b/b6 domain-containing protein | insig. | 23 | 88 |