| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Pseudomonas simiae WCS417 | PS417_11085 | | ATPase AAA | insig. | 100 | 100 |
| o | Pseudomonas fluorescens SBW25 | PFLU_RS11715 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 96 | 100 |
| o | Pseudomonas fluorescens SBW25-INTG | PFLU_RS11715 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 96 | 100 |
| o | Pseudomonas lactucae CFBP13502 | GEMAOFIL_02520 | | Anaerobic nitric oxide reductase transcription regulator NorR | cofit | 88 | 100 |
| o | Pseudomonas orientalis W4I3 | QF045_RS13490 | | sigma 54-interacting transcriptional regulator | insig. | 86 | 100 |
| o | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_4389 | | Sigma-54 dependent transcriptional regulator | insig. | 83 | 99 |
| o | Pseudomonas fluorescens FW300-N2C3 | AO356_29210 | | AAA family ATPase | insig. | 80 | 99 |
| o | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_1790 | | Sigma-54 dependent transcriptional regulator | insig. | 79 | 99 |
| o | Pseudomonas sp. RS175 | PFR28_02055 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 59 | 98 |
| o | Serratia liquefaciens MT49 | IAI46_12235 | | sigma 54-interacting transcriptional regulator | insig. | 56 | 93 |
| o | Klebsiella michiganensis M5al | BWI76_RS10230 | | AAA family ATPase | no data | 51 | 95 |
| o | Pantoea sp. MT58 | IAI47_19790 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 52 | 95 |
| | Klebsiella pneumoniae MKP103 | KDGMDA_10090 | | sigma-54-dependent response regulator transcription factor ZraR | insig. | 53 | 46 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS25420 | | Fis family transcriptional regulator | insig. | 33 | 96 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS23090 | | sigma-54-dependent response regulator transcription factor ZraR | insig. | 53 | 46 |
| | Escherichia fergusonii Becca | EFB2_04606 | | Transcriptional regulatory protein ZraR | insig. | 53 | 46 |
| | Escherichia coli ECOR38 | HEPCGN_11960 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 52 | 46 |
| | Escherichia coli ECOR27 | NOLOHH_05465 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 53 | 46 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF4188 | | Response regulator of zinc sigma-54-dependent two-component system | insig. | 53 | 46 |
| | Escherichia coli BL21 | ECD_03881 | | fused DNA-binding response regulator in two-component regulatory system with ZraS: response regulator/sigma54 interaction protein | insig. | 53 | 46 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_04045 | | Transcriptional regulatory protein ZraR | insig. | 53 | 46 |
| | Escherichia coli BW25113 | b4004 | zraR | fused DNA-binding response regulator in two-component regulatory system with ZraS: response regulator/sigma54 interaction protein (NCBI) | insig. | 53 | 46 |
| | Escherichia coli ECRC62 | BNILDI_06055 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 52 | 46 |
| | Klebsiella michiganensis M5al | BWI76_RS01605 | | transcriptional regulatory protein ZraR | insig. | 52 | 46 |
| | Escherichia coli ECRC101 | MCAODC_03820 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 52 | 46 |
| | Escherichia coli ECRC102 | NIAGMN_11070 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 52 | 46 |
| | Escherichia coli ECRC99 | KEDOAH_14840 | zraR | sigma-54-dependent response regulator transcription factor ZraR | no data | 52 | 46 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS28905 | | Fis family transcriptional regulator | cofit | 34 | 95 |
| | Escherichia coli ECRC98 | JDDGAC_16945 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 52 | 46 |
| | Escherichia coli ECRC100 | OKFHMN_13320 | zraR | sigma-54-dependent response regulator transcription factor ZraR | cofit | 52 | 46 |
| o | Azospirillum sp. SherDot2 | MPMX19_03559 | | Acetoin dehydrogenase operon transcriptional activator AcoR | insig. | 34 | 96 |
| | Azospirillum brasilense Sp245 | AZOBR_RS29300 | | Fis family transcriptional regulator | insig. | 46 | 49 |
| | Phocaeicola vulgatus CL09T03C04 | HMPREF1058_RS04160 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 46 | 48 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS12650 | | sigma-54 dependent transcriptional regulator | insig. | 45 | 50 |
| | Xanthobacter sp. DMC5 | GFF4834 | | Regulatory protein AtoC | insig. | 45 | 50 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS17060 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 45 | 48 |
| | Variovorax sp. OAS795 | ABID97_RS06460 | | sigma 54-interacting transcriptional regulator | cofit | 48 | 49 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_0700 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | insig. | 47 | 50 |
| | Rhodopseudomonas palustris CGA009 | TX73_007055 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 44 | 55 |
| | Caulobacter crescentus NA1000 | CCNA_03424 | | AAA-family response regulator tacA | strong | 42 | 53 |
| | Caulobacter crescentus NA1000 Δfur | CCNA_03424 | | AAA-family response regulator tacA | cofit | 42 | 53 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_09510 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 45 | 51 |
| | Variovorax sp. SCN45 | GFF7323 | | Transcriptional response regulatory protein GlrR | insig. | 48 | 49 |
| | Acidovorax sp. GW101-3H11 | Ac3H11_4011 | | Putative sensory histidine kinase YfhA | sig. | 48 | 49 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_2149 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | strong | 45 | 50 |
| | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS09115 | | sigma-54 dependent transcriptional regulator | insig. | 43 | 52 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0569 | flrA | sigma-54 dependent transcriptional regulator (TIGR) | sig. | 39 | 64 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0744 | | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | strong | 50 | 46 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1933 | | PAS modulated sigma54 specific transcriptional regulator, Fis family (RefSeq) | insig. | 44 | 51 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU2894 | flrA | sigma-54 dependent transcriptional regulator (TIGR) | strong | 57 | 35 |
| | Pseudomonas segetis P6 | ACVTMO_RS03895 | | sigma-54 interaction domain-containing protein | insig. | 47 | 48 |
| | Pseudomonas putida KT2440 | PP_2790 | | Sigma-54 dependent sensory box protein | strong | 41 | 63 |
| | Pseudomonas sp. SVBP6 | COO64_RS07975 | | sigma-54 dependent transcriptional regulator | insig. | 52 | 45 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_01292 | | Regulatory protein AtoC | cofit | 44 | 51 |
| | Cellulophaga baltica 18 | M666_RS03195 | | sigma-54 dependent transcriptional regulator | insig. | 44 | 47 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_0823 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | insig. | 48 | 48 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS23710 | | response regulator GlrR | insig. | 48 | 49 |
| | Rhodospirillum rubrum S1H | Rru_A3104 | | Two Component, Sigma54 Specific, Transcriptional Regulator, Fis family (NCBI) | insig. | 46 | 49 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF2455 | | Putative sensory histidine kinase YfhA | strong | 49 | 46 |
| | Escherichia coli BL21 | ECD_02147 | | fused response regulator of ato operon, in two-component system with AtoS: response regulator/sigma54 interaction protein | insig. | 45 | 48 |
| | Escherichia fergusonii Becca | EFB2_01635 | | Regulatory protein AtoC | insig. | 45 | 48 |
| | Escherichia coli ECOR38 | HEPCGN_22430 | atoC | acetoacetate metabolism transcriptional regulator AtoC | insig. | 45 | 48 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01490 | | Regulatory protein AtoC | insig. | 45 | 48 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS12965 | | acetoacetate metabolism transcriptional regulator AtoC | no data | 45 | 48 |
| | Escherichia coli BW25113 | b2220 | atoC | fused response regulator of ato operon, in two-component system with AtoS: response regulator/sigma54 interaction protein (NCBI) | insig. | 45 | 48 |
| | Pseudomonas aeruginosa PUPa3 | DQ20_RS39600 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 41 | 63 |
| | Rhodospirillum rubrum S1H | Rru_A1388 | | Transcriptional Regulator, NifA subfamily, Fis Family (NCBI) | cofit | 43 | 55 |
| | Pseudomonas aeruginosa MRSN321 | DY961_RS17365 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 41 | 63 |
| | Pseudomonas stutzeri RCH2 | Psest_1071 | | Transcriptional regulator containing PAS, AAA-type ATPase, and DNA-binding domains | strong | 46 | 48 |
| | Acinetobacter radioresistens SK82 | MPMX26_00910 | | Phenol regulator MopR | insig. | 44 | 50 |
| | Rhizobium sp. OAE497 | ABIE40_RS09090 | | nitrogen regulation protein NR(I) | strong | 46 | 48 |
| | Parabacteroides merdae CL09T00C40 | HMPREF1078_RS14380 | | sigma-54 dependent transcriptional regulator | insig. | 43 | 49 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS05610 | | sigma-54-dependent Fis family transcriptional regulator | strong | 45 | 47 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS05610 | | sigma-54-dependent Fis family transcriptional regulator | strong | 45 | 47 |
| | Alteromonas macleodii MIT1002 | MIT1002_03186 | | Nitrogen regulation protein NR(I) | strong | 45 | 48 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_2153 | | PAS modulated sigma54 specific transcriptional regulator, Fis family (RefSeq) | insig. | 37 | 64 |
| | Escherichia coli ECRC62 | BNILDI_12310 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 48 | 46 |
| | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_2422 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | strong | 43 | 47 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS14390 | | ATPase AAA | strong | 41 | 50 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_10840 | | propionate catabolism operon regulatory protein PrpR | sig. | 41 | 63 |
| | Azospirillum sp. SherDot2 | MPMX19_03461 | | Regulatory protein AtoC | insig. | 46 | 48 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_04163 | | Anaerobic nitric oxide reductase transcription regulator NorR | strong | 44 | 47 |
| | Escherichia coli BW25113 | b2491 | hyfR | putative 2-component regulator, interaction with sigma 54 (VIMSS) | sig. | 48 | 46 |
| | Escherichia coli ECOR38 | HEPCGN_21015 | hyfR | DNA-binding transcriptional activator HyfR | insig. | 47 | 47 |
| | Escherichia coli ECRC100 | OKFHMN_21850 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 48 | 46 |
| | Escherichia coli ECRC101 | MCAODC_12380 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 48 | 46 |
| | Escherichia coli ECRC102 | NIAGMN_19620 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 48 | 46 |
| | Escherichia coli ECRC98 | JDDGAC_25795 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 48 | 46 |
| | Escherichia coli ECRC99 | KEDOAH_06370 | hyfR | DNA-binding transcriptional regulator HyfR | no data | 48 | 46 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01235 | | DNA-binding transcriptional activator HyfR | cofit | 48 | 46 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF610 | | Putative sensory histidine kinase YfhA | insig. | 48 | 48 |
| | Escherichia coli ECOR38 | HEPCGN_20640 | qseF | two-component system response regulator QseF/GlrR | strong | 48 | 46 |
| | Escherichia coli BL21 | ECD_02383 | | hydrogenase-4 transcriptional activator | cofit | 48 | 46 |
| | Escherichia coli BL21 | ECD_03753 | | fused DNA-binding response regulator in two-component regulatory system with GlnL: response regulator/sigma54 interaction protein | insig. | 48 | 48 |
| | Escherichia coli ECOR27 | NOLOHH_06240 | glnG | nitrogen regulation protein NR(I) | insig. | 48 | 48 |
| | Escherichia coli ECRC100 | OKFHMN_14110 | glnG | nitrogen regulation protein NR(I) | insig. | 48 | 48 |
| | Escherichia coli ECRC101 | MCAODC_04610 | glnG | nitrogen regulation protein NR(I) | strong | 48 | 48 |
| | Escherichia coli ECRC102 | NIAGMN_11865 | glnG | nitrogen regulation protein NR(I) | insig. | 48 | 48 |
| | Escherichia coli ECRC98 | JDDGAC_17735 | glnG | nitrogen regulation protein NR(I) | no data | 48 | 48 |
| | Escherichia coli ECRC99 | KEDOAH_14040 | glnG | nitrogen regulation protein NR(I) | no data | 48 | 48 |