| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Sinorhizobium meliloti 1021 | SM_b21079 | | transcriptional regulator | insig. | 100 | 100 |
| o | Phaeobacter inhibens DSM 17395 | PGA1_c17670 | | transcriptional regulator, crp family | sig. | 40 | 84 |
| | Rhizobium sp. OAE497 | ABIE40_RS14315 | | Crp/Fnr family transcriptional regulator | insig. | 36 | 75 |
| | Azospirillum sp. SherDot2 | MPMX19_05769 | | hypothetical protein | insig. | 35 | 75 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_3843 | | cAMP-binding proteins - catabolite gene activator and regulatory subunit of cAMP-dependent protein kinases | insig. | 30 | 85 |
| | Rhodospirillum rubrum S1H | Rru_A1787 | | Cyclic nucleotide-binding domain (cNMP-BD) protein (NCBI) | insig. | 32 | 79 |
| | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS05295 | | Crp/Fnr family transcriptional regulator | insig. | 31 | 90 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_3841 | | cAMP-binding proteins - catabolite gene activator and regulatory subunit of cAMP-dependent protein kinases | insig. | 33 | 78 |
| | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS13080 | | Crp/Fnr family transcriptional regulator | insig. | 32 | 75 |
| | Sphingobium sp. HT1-2 | GFF496 | | hypothetical protein | insig. | 29 | 95 |
| | Rhizobium sp. OAE497 | ABIE40_RS06085 | | Crp/Fnr family transcriptional regulator | insig. | 31 | 79 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_4078 | | cAMP-binding proteins - catabolite gene activator and regulatory subunit of cAMP-dependent protein kinases | insig. | 29 | 85 |
| | Rhodopseudomonas palustris CGA009 | TX73_017160 | | Crp/Fnr family transcriptional regulator | insig. | 29 | 96 |
| | Bosea sp. OAE506 | ABIE41_RS04120 | | Crp/Fnr family transcriptional regulator | insig. | 31 | 77 |
| | Sinorhizobium meliloti 1021 | SMc01954 | | transcriptional regulator | insig. | 30 | 85 |
| | Rhodopseudomonas palustris CGA009 | TX73_010705 | | Crp/Fnr family transcriptional regulator | insig. | 32 | 74 |
| | Sphingobium sp. HT1-2 | GFF5073 | | cAMP-binding proteins - catabolite gene activator and regulatory subunit of cAMP-dependent protein kinases | cofit | 28 | 84 |
| | Acidovorax sp. GW101-3H11 | Ac3H11_3065 | | cAMP-binding proteins - catabolite gene activator and regulatory subunit of cAMP-dependent protein kinases | insig. | 29 | 79 |
| | Variovorax sp. OAS795 | ABID97_RS06620 | | Crp/Fnr family transcriptional regulator | insig. | 30 | 81 |
| | Bosea sp. OAE506 | ABIE41_RS05275 | | Crp/Fnr family transcriptional regulator | insig. | 33 | 70 |
| | Agrobacterium fabrum C58 | Atu1037 | | nitrogen fixation regulatory protein | insig. | 29 | 79 |
| | Variovorax sp. SCN45 | GFF5168 | | cAMP-binding proteins - catabolite gene activator and regulatory subunit of cAMP-dependent protein kinases | insig. | 28 | 81 |
| | Bosea sp. OAE506 | ABIE41_RS00860 | | Crp/Fnr family transcriptional regulator | insig. | 32 | 76 |
| | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS05130 | | Crp/Fnr family transcriptional regulator | insig. | 29 | 97 |
| | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS05290 | | Crp/Fnr family transcriptional regulator | insig. | 25 | 87 |
| | Phaeobacter inhibens DSM 17395 | PGA1_c19590 | | cAMP-binding proteins - catabolite gene activator and regulatory subunit of cAMP-dependent protein kinases | insig. | 28 | 79 |
| | Bosea sp. OAE506 | ABIE41_RS01080 | | Crp/Fnr family transcriptional regulator | insig. | 25 | 88 |
| | Bosea sp. OAE506 | ABIE41_RS01295 | | Crp/Fnr family transcriptional regulator | insig. | 24 | 88 |
| | Rhodopseudomonas palustris CGA009 | TX73_005105 | | Crp/Fnr family transcriptional regulator | insig. | 27 | 86 |
| | Bosea sp. OAE506 | ABIE41_RS06880 | | Crp/Fnr family transcriptional regulator | insig. | 28 | 91 |
| | Xanthobacter sp. DMC5 | GFF3783 | | Nitrogen fixation regulation protein FixK | insig. | 29 | 71 |
| | Dinoroseobacter shibae DFL-12 | Dshi_0447 | | transcriptional regulator, Crp/Fnr family (RefSeq) | insig. | 28 | 70 |
| | Dinoroseobacter shibae DFL-12 | Dshi_3844 | | cyclic nucleotide-binding protein (RefSeq) | sig. | 27 | 70 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS13815 | | cyclic nucleotide-binding domain-containing protein | strong | 26 | 73 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS14095 | | cyclic nucleotide-binding domain-containing protein | strong | 26 | 73 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS14515 | | cyclic nucleotide-binding domain-containing protein | insig. | 27 | 71 |
| | Kangiella aquimarina DSM 16071 | B158DRAFT_1982 | | cAMP-binding proteins - catabolite gene activator and regulatory subunit of cAMP-dependent protein kinases | sig. | 28 | 83 |
| | Azospirillum brasilense Sp245 | AZOBR_RS23090 | | Crp/Fnr family transcription regulator | insig. | 30 | 77 |
| | Sinorhizobium meliloti 1021 | SMa1225 | | transcriptional regulator FixK | no data | 28 | 77 |
| | Sinorhizobium meliloti 1021 | SMa0762 | | transcriptional regulator FixK | no data | 29 | 70 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_00820 | | CRP-like protein Clp | insig. | 26 | 73 |
| | Rhodopseudomonas palustris CGA009 | TX73_022020 | | helix-turn-helix domain-containing protein | no data | 29 | 74 |
| | Azospirillum sp. SherDot2 | MPMX19_00212 | | Nitrogen fixation regulation protein FixK | cofit | 26 | 78 |
| | Pseudomonas stutzeri RCH2 | Psest_2223 | | cAMP-binding proteins - catabolite gene activator and regulatory subunit of cAMP-dependent protein kinases | insig. | 26 | 78 |
| | Azospirillum brasilense Sp245 | AZOBR_RS01145 | | Crp/Fnr family transcriptional regulator | cofit | 25 | 81 |
| | Caulobacter crescentus NA1000 | CCNA_00789 | | hypoxia transcriptional regulator FixK | strong | 30 | 67 |
| | Caulobacter crescentus NA1000 Δfur | CCNA_00789 | | hypoxia transcriptional regulator FixK | cofit | 30 | 67 |
| | Sinorhizobium meliloti 1021 | SMa1141 | | FNR/CRP family transcriptional regulator | insig. | 27 | 80 |
| | Rhodospirillum rubrum S1H | Rru_A3322 | | Transcriptional Regulator, Crp/Fnr family (NCBI) | cofit | 28 | 67 |
| | Azospirillum sp. SherDot2 | MPMX19_03014 | | Transcriptional activatory protein AadR | insig. | 24 | 79 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS22105 | | transcriptional regulator | insig. | 23 | 75 |
| | Bosea sp. OAE506 | ABIE41_RS00735 | | helix-turn-helix domain-containing protein | insig. | 40 | 26 |
| | Sinorhizobium meliloti 1021 | SMa0662 | | transcriptional regulator FixK | insig. | 27 | 68 |
| | Pseudomonas sp. BP01 | JOY50_RS00125 | fnrA | Crp/Fnr family transcriptional regulator FnrA | insig. | 25 | 72 |
| | Pseudomonas stutzeri RCH2 | Psest_2538 | | cAMP-binding proteins - catabolite gene activator and regulatory subunit of cAMP-dependent protein kinases | strong | 26 | 74 |
| | Pseudomonas putida KT2440 | PP_4265 | | DNA-binding transcriptional dual regulator | strong | 25 | 72 |
| | Azospirillum brasilense Sp245 | AZOBR_RS17340 | | hypothetical protein | insig. | 26 | 69 |
| | Pseudomonas sp. SVBP6 | COO64_RS18640 | fnrA | Crp/Fnr family transcriptional regulator FnrA | insig. | 24 | 72 |
| | Vibrio cholerae E7946 ATCC 55056 | CSW01_07190 | | transcriptional regulator FNR | strong | 24 | 76 |
| | Pseudomonas sp. S08-1 | OH686_02245 | | Fumarate and nitrate reduction regulatory protein | insig. | 25 | 85 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS13585 | | helix-turn-helix domain-containing protein | insig. | 27 | 71 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS13870 | | helix-turn-helix domain-containing protein | strong | 27 | 71 |
| | Lysobacter sp. OAE881 | ABIE51_RS10480 | | helix-turn-helix domain-containing protein | insig. | 26 | 79 |
| | Sphingobium sp. HT1-2 | GFF4341 | | hypothetical protein | insig. | 25 | 79 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS05585 | | helix-turn-helix domain-containing protein | insig. | 26 | 75 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS05830 | | helix-turn-helix domain-containing protein | insig. | 26 | 75 |
| | Pseudomonas simiae WCS417 | PS417_20785 | | transcriptional regulator | strong | 25 | 72 |
| | Alteromonas macleodii MIT1002 | MIT1002_02137 | | Fumarate and nitrate reduction regulatory protein | strong | 23 | 75 |
| | Erwinia amylovora T8 | OLJFJH_13925 | | transcriptional regulator FNR | sig. | 23 | 81 |
| | Bosea sp. OAE506 | ABIE41_RS15480 | | helix-turn-helix domain-containing protein | insig. | 28 | 71 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS17195 | | helix-turn-helix domain-containing protein | insig. | 26 | 75 |
| | Pantoea agglomerans CFBP13505 P0401 | PagCFBP13505_RS06575 | | fumarate/nitrate reduction transcriptional regulator Fnr | cofit | 24 | 81 |
| | Dechlorosoma suillum PS | Dsui_2397 | | cAMP-binding protein | cofit | 22 | 66 |
| | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_2881 | | cAMP-binding proteins - catabolite gene activator and regulatory subunit of cAMP-dependent protein kinases | sig. | 21 | 78 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS22395 | | fumarate/nitrate reduction transcriptional regulator Fnr | cofit | 25 | 72 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS22395 | | fumarate/nitrate reduction transcriptional regulator Fnr | strong | 25 | 72 |
| | Agrobacterium fabrum C58 | Atu1602 | | transcriptional activator, Crp family | strong | 24 | 59 |
| | Castellaniella sp019104865 MT123 | ABCV34_RS08975 | | helix-turn-helix domain-containing protein | insig. | 25 | 74 |
| | Azospirillum brasilense Sp245 | AZOBR_RS09400 | | transcriptional regulator Crp/Fnr family | insig. | 24 | 78 |
| | Pseudomonas orientalis W4I3 | QF045_RS22590 | | fumarate/nitrate reduction transcriptional regulator Fnr | sig. | 24 | 72 |
| | Rhodopseudomonas palustris CGA009 | TX73_021940 | | helix-turn-helix domain-containing protein | no data | 24 | 86 |
| | Pseudomonas aeruginosa MRSN321 | DY961_RS19345 | anr;inference=COORDINATES | transcriptional regulator Anr | strong | 24 | 72 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_07375 | | transcriptional regulator Anr | strong | 24 | 72 |
| | Pseudomonas aeruginosa PUPa3 | DQ20_RS53475 | anr;inference=COORDINATES | transcriptional regulator Anr | strong | 24 | 72 |
| | Phaeobacter inhibens DSM 17395 | PGA1_c30140 | | transcriptional activator protein FnrL | insig. | 25 | 83 |
| | Castellaniella sp019104865 MT123 | ABCV34_RS06835 | | helix-turn-helix domain-containing protein | strong | 25 | 81 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_04302 | | Transcriptional activator protein Anr | no data | 25 | 72 |
| | Shewanella sp. ANA-3 | Shewana3_2115 | | fumarate/nitrate reduction transcriptional regulator (RefSeq) | no data | 22 | 78 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS14740 | | helix-turn-helix domain-containing protein | insig. | 26 | 71 |
| | Variovorax sp. OAS795 | ABID97_RS07820 | | Crp/Fnr family transcriptional regulator | strong | 20 | 74 |
| | Azospirillum brasilense Sp245 | AZOBR_RS17185 | | Crp/Fnr family transcriptional regulator | strong | 24 | 87 |
| | Shewanella oneidensis MR-1 | SO2356 | etrA | electron transport regulator a (NCBI ptt file) | strong | 23 | 74 |
| | Synechococcus elongatus PCC 7942 | Synpcc7942_2356 | | transcriptional regulator, Crp/Fnr family | insig. | 26 | 67 |
| | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.2952.1 | | transcriptional regulator, Crp/Fnr family | sig. | 26 | 79 |
| | Pseudomonas segetis P6 | ACVTMO_RS11455 | fnr | fumarate/nitrate reduction transcriptional regulator Fnr | insig. | 25 | 72 |
| | Marinobacter adhaerens HP15 | HP15_634 | | transcriptional regulator, Crp/Fnr family | insig. | 25 | 71 |
| | Synechocystis sp000284455 PCC 6803 | SGL_RS17960 | | Crp/Fnr family transcriptional regulator | insig. | 24 | 91 |
| | Rhizobium sp. OAE497 | ABIE40_RS26175 | | helix-turn-helix domain-containing protein | insig. | 22 | 71 |
| | Shewanella amazonensis SB2B | Sama_1799 | | fumarate/nitrate reduction transcriptional regulator (RefSeq) | sig. | 21 | 81 |
| | Lysobacter sp. OAE881 | ABIE51_RS03805 | | fumarate/nitrate reduction transcriptional regulator Fnr | cofit | 26 | 76 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF4142 | | transcriptional regulator, Crp/Fnr family | insig. | 24 | 80 |
| | Paraburkholderia graminis OAS925 | ABIE53_004332 | | CRP/FNR family transcriptional regulator | sig. | 27 | 75 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS21215 | | Crp/Fnr family transcriptional regulator | strong | 27 | 75 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_00660 | | transcriptional regulator | strong | 24 | 72 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS16020 | | transcriptional regulator | no data | 24 | 88 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_00805 | crp | cAMP-binding domain of CRP or a regulatory subunit of cAMP-dependent protein kinases | insig. | 26 | 75 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_3425 | | Cyclic nucleotide-binding:Bacterial regulatory protein, Crp | insig. | 23 | 72 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_3425 | | Cyclic nucleotide-binding:Bacterial regulatory protein, Crp | no data | 23 | 72 |
| | Variovorax sp. SCN45 | GFF6037 | | Transcriptional regulator, Crp/Fnr family | cofit | 20 | 74 |
| | Sphingobium sp. HT1-2 | GFF3049 | | Transcriptional regulator, Crp/Fnr family | cofit | 34 | 27 |
| | Escherichia coli ECRC98 | JDDGAC_04785 | fnr | fumarate/nitrate reduction transcriptional regulator Fnr | insig. | 23 | 81 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_01640 | | transcriptional regulator, Crp/Fnr family | sig. | 27 | 75 |
| | Pantoea sp. MT58 | IAI47_09580 | | FNR family transcription factor | strong | 23 | 81 |
| | Escherichia fergusonii Becca | EFB2_02593 | | Fumarate and nitrate reduction regulatory protein | sig. | 23 | 81 |
| | Escherichia coli ECOR27 | NOLOHH_19940 | fnr | fumarate/nitrate reduction transcriptional regulator Fnr | sig. | 23 | 81 |
| | Escherichia coli ECOR38 | HEPCGN_25925 | fnr | fumarate/nitrate reduction transcriptional regulator Fnr | insig. | 23 | 81 |
| | Escherichia coli ECRC100 | OKFHMN_02240 | fnr | fumarate/nitrate reduction transcriptional regulator Fnr | insig. | 23 | 81 |
| | Escherichia coli ECRC102 | NIAGMN_26410 | fnr | fumarate/nitrate reduction transcriptional regulator Fnr | insig. | 23 | 81 |
| | Escherichia coli ECRC62 | BNILDI_18090 | fnr | fumarate/nitrate reduction transcriptional regulator Fnr | strong | 23 | 81 |
| | Escherichia coli ECRC99 | KEDOAH_26530 | fnr | fumarate/nitrate reduction transcriptional regulator Fnr | no data | 23 | 81 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_02348 | | Fumarate and nitrate reduction regulatory protein | sig. | 23 | 81 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS08005 | | fumarate/nitrate reduction transcriptional regulator Fnr | insig. | 23 | 81 |
| | Escherichia coli BW25113 | b1334 | fnr | DNA-binding transcriptional dual regulator, global regulator of anaerobic growth (NCBI) | strong | 23 | 81 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS17975 | | helix-turn-helix domain-containing protein | strong | 31 | 39 |
| | Klebsiella pneumoniae MKP103 | KDGMDA_21005 | | fumarate/nitrate reduction transcriptional regulator Fnr | strong | 23 | 81 |
| | Klebsiella pneumoniae MRSN742743 | KFA93_RS22350 | fnr;inference=COORDINATES | fumarate/nitrate reduction transcriptional regulator Fnr | no data | 23 | 81 |