| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| o | Escherichia coli BL21 | ECD_03944 | | formate-dependent nitrite reductase, 4Fe4S subunit | insig. | 100 | 100 |
| o | Escherichia coli ECRC100 | OKFHMN_12810 | nrfC | cytochrome c nitrite reductase Fe-S protein | insig. | 100 | 100 |
| o | Escherichia coli ECRC101 | MCAODC_03320 | nrfC | cytochrome c nitrite reductase Fe-S protein | insig. | 100 | 100 |
| o | Escherichia coli ECRC102 | NIAGMN_10655 | nrfC | cytochrome c nitrite reductase Fe-S protein | cofit | 100 | 100 |
| o | Escherichia coli ECRC98 | JDDGAC_16445 | nrfC | cytochrome c nitrite reductase Fe-S protein | insig. | 100 | 100 |
| o | Escherichia coli ECRC99 | KEDOAH_15340 | nrfC | cytochrome c nitrite reductase Fe-S protein | no data | 100 | 100 |
| o | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_03968 | | putative ferredoxin-like protein YdhX | insig. | 100 | 100 |
| | Escherichia coli BW25113 | b4072 | nrfC | formate-dependent nitrite reductase, 4Fe4S subunit (NCBI) | insig. | 100 | 100 |
| o | Escherichia coli ECOR27 | NOLOHH_05060 | nrfC | cytochrome c nitrite reductase Fe-S protein | insig. | 100 | 100 |
| o | Escherichia coli ECRC62 | BNILDI_06465 | nrfC | cytochrome c nitrite reductase Fe-S protein | insig. | 99 | 100 |
| o | Escherichia fergusonii Becca | EFB2_04517 | | putative ferredoxin-like protein YdhX | insig. | 99 | 100 |
| o | Escherichia coli Nissle 1917 | ECOLIN_RS23565 | | cytochrome c nitrite reductase Fe-S protein | insig. | 99 | 100 |
| o | Escherichia coli ECOR38 | HEPCGN_11435 | nrfC | cytochrome c nitrite reductase Fe-S protein | insig. | 99 | 100 |
| o | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF1455 | | NrfC protein | cofit | 91 | 100 |
| o | Pectobacterium carotovorum WPP14 | HER17_RS09005 | | cytochrome c nitrite reductase Fe-S protein | insig. | 85 | 100 |
| o | Shewanella loihica PV-4 | Shew_3157 | | 4Fe-4S ferredoxin iron-sulfur binding domain-containing protein (RefSeq) | insig. | 60 | 99 |
| o | Shewanella amazonensis SB2B | Sama_2903 | | NrfC, Fe-S-cluster-containing hydrogenase component 1 (RefSeq) | insig. | 58 | 99 |
| o | Dickeya dianthicola ME23 | DZA65_RS04465 | | 4Fe-4S dicluster domain-containing protein | insig. | 59 | 98 |
| o | Dickeya dadantii 3937 | DDA3937_RS04585 | | 4Fe-4S dicluster domain-containing protein | insig. | 58 | 98 |
| o | Dickeya dianthicola 67-19 | HGI48_RS04545 | | 4Fe-4S dicluster domain-containing protein | insig. | 58 | 98 |
| o | Shewanella sp. ANA-3 | Shewana3_3961 | | 4Fe-4S ferredoxin iron-sulfur binding domain-containing protein (RefSeq) | cofit | 57 | 100 |
| | Pectobacterium carotovorum WPP14 | HER17_RS17065 | | 4Fe-4S dicluster domain-containing protein | insig. | 57 | 99 |
| | Shewanella loihica PV-4 | Shew_0607 | | 4Fe-4S ferredoxin iron-sulfur binding domain-containing protein (RefSeq) | no data | 56 | 83 |
| o | Shewanella oneidensis MR-1 | SO4061 | psrB | polysulfide reductase, subunit B (NCBI ptt file) | insig. | 56 | 83 |
| | Shewanella sp. ANA-3 | Shewana3_3618 | | 4Fe-4S ferredoxin iron-sulfur binding domain-containing protein (RefSeq) | insig. | 56 | 83 |
| | Escherichia coli BL21 | ECD_01640 | | putative 4Fe-4S ferridoxin-type protein; FNR, Nar, NarP-regulated protein; putative subunit of YdhYVWXUT oxidoreductase complex | no data | 50 | 96 |
| | Escherichia coli BW25113 | b1671 | ydhX | predicted 4Fe-4S ferridoxin-type protein (RefSeq) | sig. | 50 | 96 |
| | Escherichia fergusonii Becca | EFB2_02321 | | putative ferredoxin-like protein YdhX | insig. | 50 | 96 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS09350 | | 4Fe-4S dicluster domain-containing protein | no data | 50 | 96 |
| | Shewanella amazonensis SB2B | Sama_3176 | | polysulfide reductase, subunit B (RefSeq) | insig. | 55 | 83 |
| | Escherichia coli ECOR27 | NOLOHH_17835 | | Ferredoxin | insig. | 50 | 96 |
| | Escherichia coli ECRC62 | BNILDI_16625 | | Ferredoxin | cofit | 50 | 96 |
| | Escherichia coli ECOR38 | HEPCGN_05700 | | Thiosulfate reductase electron transport protein PhsB | insig. | 49 | 96 |
| | Escherichia coli ECRC100 | OKFHMN_27315 | | Uncharacterized ferredoxin-like protein YdhX | cofit | 49 | 96 |
| | Escherichia coli ECRC102 | NIAGMN_00750 | | Uncharacterized ferredoxin-like protein YdhX | insig. | 49 | 96 |
| | Escherichia coli ECRC98 | JDDGAC_01890 | | Uncharacterized ferredoxin-like protein YdhX | insig. | 49 | 96 |
| | Escherichia coli ECRC99 | KEDOAH_00795 | | Uncharacterized ferredoxin-like protein YdhX | no data | 49 | 96 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_02053 | | putative ferredoxin-like protein YdhX | insig. | 49 | 96 |
| | Escherichia coli ECRC101 | MCAODC_18095 | | Putative oxidoreductase Fe-S subunit | sig. | 49 | 96 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF3921 | | Thiosulfate reductase electron transport protein phsB | cofit | 53 | 80 |
| | Shewanella sp. ANA-3 | Shewana3_0493 | | 4Fe-4S ferredoxin iron-sulfur binding domain-containing protein (RefSeq) | insig. | 42 | 95 |
| | Shewanella oneidensis MR-1 | SO0483 | nrfC | formate-dependent nitrite reductase, nrfC protein (NCBI ptt file) | insig. | 41 | 95 |
| | Shewanella loihica PV-4 | Shew_0352 | | 4Fe-4S ferredoxin iron-sulfur binding domain-containing protein (RefSeq) | insig. | 46 | 81 |
| | Shewanella sp. ANA-3 | Shewana3_0635 | | 4Fe-4S ferredoxin iron-sulfur binding domain-containing protein (RefSeq) | insig. | 41 | 96 |
| o | Azospirillum brasilense Sp245 | AZOBR_RS23550 | | tetrathionate reductase subunit B | insig. | 44 | 79 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF3574 | | Tetrathionate reductase subunit B | insig. | 40 | 95 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS06305 | | 4Fe-4S dicluster domain-containing protein | cofit | 37 | 80 |
| o | Dechlorosoma suillum PS | Dsui_2508 | | Fe-S-cluster-containing hydrogenase subunit | cofit | 37 | 96 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS17930 | | 4Fe-4S dicluster domain-containing protein | strong | 37 | 81 |
| o | Serratia liquefaciens MT49 | IAI46_04870 | | tetrathionate reductase subunit TtrB | insig. | 37 | 100 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS16595 | | 4Fe-4S dicluster domain-containing protein | cofit | 39 | 96 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS10175 | | 4Fe-4S dicluster domain-containing protein | insig. | 35 | 79 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS24535 | | ferredoxin | no data | 36 | 81 |
| | Shewanella loihica PV-4 | Shew_3244 | | 4Fe-4S ferredoxin iron-sulfur binding domain-containing protein (RefSeq) | insig. | 37 | 99 |
| o | Variovorax sp. SCN45 | GFF3158 | | Sulfite dehydrogenase (quinone), iron-sulfur subunit SoeB (EC 1.8.5.6) | insig. | 35 | 92 |
| | Shewanella sp. ANA-3 | Shewana3_2340 | | 4Fe-4S ferredoxin iron-sulfur binding domain-containing protein (RefSeq) | insig. | 34 | 81 |
| o | Dinoroseobacter shibae DFL-12 | Dshi_1237 | | 4Fe-4S ferredoxin iron-sulfur binding domain protein (RefSeq) | insig. | 37 | 84 |
| | Azospirillum brasilense Sp245 | AZOBR_RS32495 | | ferredoxin | sig. | 36 | 81 |
| | Dechlorosoma suillum PS | Dsui_3011 | | Fe-S-cluster-containing hydrogenase subunit | no data | 35 | 82 |
| | Phaeobacter inhibens DSM 17395 | PGA1_c28890 | | polysulfide reductase chain B-like protein | insig. | 35 | 78 |
| | Cellulophaga baltica 18 | M666_RS14265 | | 4Fe-4S dicluster domain-containing protein | insig. | 36 | 80 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0172 | phsB | thiosulfate reductase (phsB) (Shelley Haveman) | strong | 46 | 65 |
| | Shewanella loihica PV-4 | Shew_0244 | | 4Fe-4S ferredoxin iron-sulfur binding domain-containing protein (RefSeq) | insig. | 36 | 87 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF3107 | | Fe-S-cluster-containing hydrogenase components 1 | insig. | 31 | 97 |
| | Lysobacter sp. OAE881 | ABIE51_RS02980 | | 4Fe-4S dicluster domain-containing protein | strong | 34 | 78 |
| | Escherichia coli BL21 | ECD_02872 | | hydrogenase 2 4Fe-4S ferredoxin-type component | insig. | 31 | 97 |
| | Escherichia fergusonii Becca | EFB2_00811 | | Formate dehydrogenase, nitrate-inducible, iron-sulfur subunit | cofit | 31 | 97 |
| | Escherichia coli ECOR27 | NOLOHH_10785 | hybA | hydrogenase 2 operon protein HybA | insig. | 31 | 97 |
| | Escherichia coli ECOR38 | HEPCGN_17870 | hybA | hydrogenase 2 operon protein HybA | insig. | 31 | 97 |
| | Escherichia coli ECRC100 | OKFHMN_19010 | hybA | hydrogenase 2 operon protein HybA | insig. | 31 | 97 |
| | Escherichia coli ECRC101 | MCAODC_09525 | hybA | hydrogenase 2 operon protein HybA | insig. | 31 | 97 |
| | Escherichia coli ECRC102 | NIAGMN_16775 | hybA | hydrogenase 2 operon protein HybA | insig. | 31 | 97 |
| | Escherichia coli ECRC62 | BNILDI_00730 | hybA | hydrogenase 2 operon protein HybA | insig. | 31 | 97 |
| | Escherichia coli ECRC98 | JDDGAC_22645 | hybA | hydrogenase 2 operon protein HybA | insig. | 31 | 97 |
| | Escherichia coli ECRC99 | KEDOAH_09135 | hybA | hydrogenase 2 operon protein HybA | no data | 31 | 97 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS17260 | | hydrogenase 2 operon protein HybA | insig. | 31 | 97 |
| | Escherichia coli BW25113 | b2996 | hybA | hydrogenase 2 4Fe-4S ferredoxin-type component (NCBI) | sig. | 31 | 97 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_00703 | | Formate dehydrogenase, nitrate-inducible, iron-sulfur subunit | insig. | 30 | 97 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU1287 | DsrO | Periplasmic (Tat), binds 2[4Fe-4S] (Shelley Haveman) | no data | 32 | 96 |
| o | Desulfovibrio vulgaris Miyazaki F | DvMF_0067 | | 4Fe-4S ferredoxin iron-sulfur binding domain protein (RefSeq) | no data | 32 | 96 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1611 | | dimethylsulfoxide reductase, chain B (RefSeq) | sig. | 34 | 82 |
| | Dickeya dadantii 3937 | DDA3937_RS14250 | | hydrogenase 2 operon protein HybA | insig. | 30 | 97 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_2597 | | 4Fe-4S ferredoxin iron-sulfur binding domain protein (RefSeq) | no data | 34 | 96 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS08345 | | 4Fe-4S dicluster domain-containing protein | cofit | 34 | 72 |
| | Dickeya dianthicola ME23 | DZA65_RS14900 | | hydrogenase 2 operon protein HybA | insig. | 30 | 97 |
| | Azospirillum brasilense Sp245 | AZOBR_RS20400 | | hydrogenase 2 protein HybA | insig. | 32 | 68 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0693 | narH | molybdopterin oxidoreductase, iron-sulfur cluster-binding subunit, putative (TIGR), containing cytochrome c heme-binding site (VIMSS_AUTO) | strong | 29 | 80 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_2688 | | 4Fe-4S ferredoxin iron-sulfur binding domain protein (RefSeq) | no data | 28 | 81 |
| | Dickeya dianthicola 67-19 | HGI48_RS14225 | | hydrogenase 2 operon protein HybA | insig. | 30 | 89 |
| | Shewanella oneidensis MR-1 | SO4357 | dmsB-2 | anaerobic dimethyl sulfoxide reductase, B subunit (NCBI ptt file) | insig. | 36 | 65 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_0319 | | 4Fe-4S ferredoxin iron-sulfur binding domain protein (RefSeq) | insig. | 40 | 68 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_29520 | | formate dehydrogenase subunit beta | insig. | 32 | 73 |
| | Azospirillum sp. SherDot2 | MPMX19_03498 | | Formate dehydrogenase, nitrate-inducible, iron-sulfur subunit | insig. | 33 | 68 |
| | Dechlorosoma suillum PS | Dsui_3281 | | formate dehydrogenase, beta subunit, Fe-S containing | cofit | 32 | 68 |
| | Pseudomonas stutzeri RCH2 | Psest_2152 | | formate dehydrogenase, beta subunit, Fe-S containing | insig. | 35 | 62 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0535 | hmcB | 40.1 kd protein in hmc operon (HmcB) (voordouw) | cofit | 35 | 72 |
| | Pseudomonas segetis P6 | MPMX49_04028 | | Formate dehydrogenase-O iron-sulfur subunit | insig. | 32 | 73 |
| | Dechlorosoma suillum PS | Dsui_0148 | | DMSO reductase family type II enzyme, iron-sulfur subunit | strong | 35 | 62 |
| | Serratia liquefaciens MT49 | IAI46_15705 | | 4Fe-4S dicluster domain-containing protein | insig. | 34 | 81 |
| | Escherichia coli ECOR38 | HEPCGN_06145 | dmsB | dimethylsulfoxide reductase subunit B | insig. | 34 | 81 |