| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Pseudomonas simiae WCS417 | PS417_15295 | | Fis family transcriptional regulator | insig. | 100 | 100 |
| o | Pseudomonas fluorescens FW300-N2E3 | AO353_09410 | | Fis family transcriptional regulator | insig. | 61 | 97 |
| o | Pseudomonas sp. DMC3 | GFF451 | | Anaerobic nitric oxide reductase transcription regulator NorR | cofit | 58 | 98 |
| o | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_2089 | | Sigma-54 dependent transcriptional regulator | insig. | 59 | 98 |
| o | Pseudomonas aeruginosa PA14 | IKLFDK_08010 | | transcriptional regulator | sig. | 58 | 98 |
| o | Pseudomonas aeruginosa MRSN321 | DY961_RS19980 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 58 | 98 |
| o | Pseudomonas aeruginosa PUPa3 | DQ20_RS54075 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 58 | 98 |
| o | Pseudomonas fluorescens FW300-N2C3 | AO356_12160 | | Fis family transcriptional regulator | insig. | 56 | 97 |
| o | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_4304 | | Sigma-54 dependent transcriptional regulator | insig. | 56 | 97 |
| o | Pseudomonas stutzeri RCH2 | Psest_0124 | | Transcriptional regulator containing GAF, AAA-type ATPase, and DNA binding domains | sig. | 55 | 98 |
| o | Pseudomonas sp. S08-1 | OH686_12810 | | T6SS sigma-54-dependent regulator VasH | insig. | 56 | 97 |
| o | Pseudomonas segetis P6 | ACVTMO_RS00675 | | sigma-54 interaction domain-containing protein | insig. | 53 | 98 |
| | Azospirillum brasilense Sp245 | AZOBR_RS29300 | | Fis family transcriptional regulator | insig. | 48 | 61 |
| | Pseudomonas segetis P6 | ACVTMO_RS06070 | | sigma-54-dependent transcriptional regulator | no data | 45 | 64 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_01292 | | Regulatory protein AtoC | cofit | 47 | 61 |
| | Escherichia fergusonii Becca | EFB2_01635 | | Regulatory protein AtoC | insig. | 47 | 60 |
| | Escherichia coli ECOR38 | HEPCGN_22430 | atoC | acetoacetate metabolism transcriptional regulator AtoC | insig. | 47 | 60 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS12965 | | acetoacetate metabolism transcriptional regulator AtoC | no data | 47 | 60 |
| | Rhodopseudomonas palustris CGA009 | TX73_007390 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 47 | 61 |
| | Rhodospirillum rubrum S1H | Rru_A1388 | | Transcriptional Regulator, NifA subfamily, Fis Family (NCBI) | cofit | 43 | 73 |
| | Escherichia coli BL21 | ECD_02147 | | fused response regulator of ato operon, in two-component system with AtoS: response regulator/sigma54 interaction protein | insig. | 46 | 60 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01490 | | Regulatory protein AtoC | insig. | 46 | 60 |
| | Escherichia coli BW25113 | b2220 | atoC | fused response regulator of ato operon, in two-component system with AtoS: response regulator/sigma54 interaction protein (NCBI) | insig. | 46 | 60 |
| | Rhodopseudomonas palustris CGA009 | TX73_007055 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 47 | 60 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS30045 | | ATPase AAA | insig. | 46 | 68 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS05610 | | sigma-54-dependent Fis family transcriptional regulator | strong | 47 | 61 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS05610 | | sigma-54-dependent Fis family transcriptional regulator | strong | 47 | 61 |
| | Pseudomonas simiae WCS417 | PS417_05525 | | Fis family transcriptional regulator | strong | 46 | 61 |
| | Pseudomonas orientalis W4I3 | QF045_RS08450 | | sigma-54 dependent transcriptional regulator | insig. | 46 | 61 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS11550 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 42 | 77 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_16225 | | Fis family transcriptional regulator | insig. | 46 | 60 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_01779 | | DNA-binding transcriptional response regulator, NtrC family, contains REC, AAA-type ATPase, and a Fis-type DNA-binding domains | insig. | 42 | 79 |
| | Pseudomonas aeruginosa MRSN321 | DY961_RS09370 | cbrB;inference=COORDINATES | two-component system response regulator CbrB | strong | 46 | 61 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_29980 | | two-component system response regulator CbrB | strong | 46 | 61 |
| | Pseudomonas aeruginosa PUPa3 | DQ20_RS52660 | cbrB;inference=COORDINATES | two-component system response regulator CbrB | strong | 46 | 61 |
| | Alteromonas macleodii MIT1002 | MIT1002_03048 | | Transcriptional regulatory protein ZraR | insig. | 45 | 63 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_5122 | | Type IV fimbriae expression regulatory protein PilR | insig. | 45 | 64 |
| | Xanthobacter sp. DMC5 | GFF4834 | | Regulatory protein AtoC | insig. | 47 | 61 |
| | Marinobacter adhaerens HP15 | HP15_328 | | two component, sigma54 specific, transcriptional regulator, Fis family | strong | 45 | 60 |
| | Azospirillum sp. SherDot2 | MPMX19_01112 | | DNA-binding transcriptional regulator NtrC | no data | 41 | 74 |
| | Pseudomonas sp. S08-1 | OH686_17260 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 45 | 62 |
| | Shewanella sp. ANA-3 | Shewana3_2849 | | sigma-54 dependent trancsriptional regulator (RefSeq) | insig. | 45 | 59 |
| | Escherichia coli ECOR27 | NOLOHH_05465 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 46 | 65 |
| | Pseudomonas sp. BP01 | JOY50_RS27675 | | sigma-54 dependent transcriptional regulator | cofit | 46 | 61 |
| | Lysobacter sp. OAE881 | ABIE51_RS04850 | | sigma-54 dependent transcriptional regulator | strong | 44 | 59 |
| | Escherichia coli BW25113 | b2491 | hyfR | putative 2-component regulator, interaction with sigma 54 (VIMSS) | sig. | 48 | 60 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_04045 | | Transcriptional regulatory protein ZraR | insig. | 46 | 65 |
| | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.1353.1 | | Type IV fimbriae expression regulatory protein PilR | sig. | 44 | 59 |
| | Escherichia coli BL21 | ECD_02383 | | hydrogenase-4 transcriptional activator | cofit | 48 | 60 |
| | Escherichia coli ECOR38 | HEPCGN_21015 | hyfR | DNA-binding transcriptional activator HyfR | insig. | 48 | 60 |
| | Pseudomonas sp. DMC3 | GFF4030 | | Transcriptional regulatory protein ZraR | strong | 44 | 64 |
| | Escherichia coli ECRC100 | OKFHMN_21850 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 48 | 60 |
| | Escherichia coli ECRC101 | MCAODC_12380 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 48 | 60 |
| | Escherichia coli ECRC102 | NIAGMN_19620 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 48 | 60 |
| | Escherichia coli ECRC98 | JDDGAC_25795 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 48 | 60 |
| | Escherichia coli ECRC99 | KEDOAH_06370 | hyfR | DNA-binding transcriptional regulator HyfR | no data | 48 | 60 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01235 | | DNA-binding transcriptional activator HyfR | cofit | 48 | 60 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_09510 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 47 | 58 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF4725 | | Formate hydrogenlyase transcriptional activator | insig. | 40 | 85 |
| | Escherichia coli ECRC62 | BNILDI_12310 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 48 | 60 |
| | Dyella japonica UNC79MFTsu3.2 | ABZR86_RS11070 | | sigma-54 dependent transcriptional regulator | cofit | 44 | 61 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_2858 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 46 | 60 |
| | Variovorax sp. OAS795 | ABID97_RS13590 | | sigma-54 dependent transcriptional regulator | insig. | 45 | 58 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS23090 | | sigma-54-dependent response regulator transcription factor ZraR | insig. | 46 | 65 |
| | Pseudomonas putida KT2440 | PP_4696 | | Nitrogen regulation protein NR(I) | strong | 46 | 60 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_5156 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 45 | 64 |
| | Marinobacter adhaerens HP15 | HP15_1891 | | two component, sigma54 specific, transcriptional regulator, Fis family | insig. | 46 | 58 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_16075 | | Fis family transcriptional regulator | strong | 46 | 60 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_14400 | | Fis family transcriptional regulator | strong | 46 | 60 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS05020 | | sigma-54 dependent transcriptional regulator | strong | 44 | 59 |
| | Azospirillum brasilense Sp245 | AZOBR_RS14430 | | chemotaxis protein CheY | strong | 41 | 74 |
| | Pseudomonas stutzeri RCH2 | Psest_0705 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | strong | 44 | 64 |
| | Variovorax sp. SCN45 | GFF3669 | | Two-component system response regulator protein | no data | 49 | 59 |
| | Escherichia coli BL21 | ECD_03881 | | fused DNA-binding response regulator in two-component regulatory system with ZraS: response regulator/sigma54 interaction protein | insig. | 46 | 65 |
| | Enterobacter asburiae PDN3 | EX28DRAFT_2822 | | Transcriptional regulator containing GAF, AAA-type ATPase, and DNA binding domains | insig. | 41 | 79 |
| | Escherichia coli BW25113 | b4004 | zraR | fused DNA-binding response regulator in two-component regulatory system with ZraS: response regulator/sigma54 interaction protein (NCBI) | insig. | 46 | 65 |
| | Pseudomonas sp. RS175 | PFR28_03718 | | Transcriptional regulatory protein ZraR | strong | 46 | 60 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_0608 | | transcriptional regulator, NifA subfamily, Fis Family (RefSeq) | strong | 46 | 60 |
| | Escherichia coli BL21 | ECD_02581 | | formate hydrogenlyase transcriptional activator | insig. | 40 | 85 |
| | Escherichia coli ECOR27 | NOLOHH_12385 | flhA | formate hydrogenlyase transcriptional activator FlhA | insig. | 40 | 85 |
| | Escherichia coli ECRC100 | OKFHMN_20540 | flhA | formate hydrogenlyase transcriptional activator FlhA | insig. | 40 | 85 |
| | Escherichia coli ECRC101 | MCAODC_11065 | flhA | formate hydrogenlyase transcriptional activator FlhA | insig. | 40 | 85 |
| | Escherichia coli ECRC102 | NIAGMN_18310 | flhA | formate hydrogenlyase transcriptional activator FlhA | insig. | 40 | 85 |
| | Escherichia coli ECRC62 | BNILDI_10935 | flhA | formate hydrogenlyase transcriptional activator FlhA | cofit | 40 | 85 |
| | Escherichia coli ECRC98 | JDDGAC_24205 | flhA | formate hydrogenlyase transcriptional activator FlhA | insig. | 40 | 85 |
| | Escherichia coli ECRC99 | KEDOAH_07595 | flhA | formate hydrogenlyase transcriptional activator FlhA | no data | 40 | 85 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01003 | | Formate hydrogenlyase transcriptional activator FhlA | insig. | 40 | 85 |
| | Escherichia coli BW25113 | b2731 | fhlA | DNA-binding transcriptional activator (NCBI) | insig. | 40 | 85 |
| | Dechlorosoma suillum PS | Dsui_0135 | | response regulator with CheY-like receiver, AAA-type ATPase, and DNA-binding domains | cofit | 47 | 61 |
| | Escherichia coli ECOR38 | HEPCGN_11960 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 46 | 65 |
| | Escherichia fergusonii Becca | EFB2_04606 | | Transcriptional regulatory protein ZraR | insig. | 46 | 65 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_1524 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 45 | 61 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS13155 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 48 | 60 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS13155 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 48 | 60 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF4188 | | Response regulator of zinc sigma-54-dependent two-component system | insig. | 47 | 60 |
| | Pseudomonas sp. SVBP6 | COO64_RS07975 | | sigma-54 dependent transcriptional regulator | insig. | 48 | 59 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0744 | | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | strong | 48 | 61 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU1949 | nifA-1 | nif-specific regulatory protein (TIGR) | strong | 48 | 54 |
| | Escherichia coli ECRC62 | BNILDI_06055 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 46 | 65 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_01730 | atoC | sigma-54-dependent Fis family transcriptional regulator | cofit | 44 | 59 |