| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Burkholderia phytofirmans PsJN | BPHYT_RS08215 | | Fis family transcriptional regulator | insig. | 100 | 100 |
| o | Paraburkholderia graminis OAS925 | ABIE53_002431 | | DNA-binding NtrC family response regulator | insig. | 96 | 100 |
| o | Variovorax sp. OAS795 | ABID97_RS24330 | | sigma 54-interacting transcriptional regulator | insig. | 64 | 98 |
| o | Variovorax sp. SCN45 | GFF2200 | | sigma-54-dependent transcriptional regulator | insig. | 64 | 99 |
| o | Cupriavidus basilensis FW507-4G11 | RR42_RS35955 | | Fis family transcriptional regulator | insig. | 59 | 97 |
| o | Ralstonia solanacearum GMI1000 | RS_RS22325 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 59 | 98 |
| o | Ralstonia solanacearum PSI07 | RPSI07_RS05015 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 58 | 98 |
| o | Ralstonia sp. UNC404CL21Col | ABZR87_RS19575 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 59 | 98 |
| o | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS18540 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 57 | 98 |
| o | Ralstonia solanacearum UW163 | UW163_RS20590 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 57 | 98 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS05020 | | sigma-54 dependent transcriptional regulator | strong | 40 | 75 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS04800 | | sigma-54 dependent transcriptional regulator | cofit | 39 | 75 |
| | Azospirillum sp. SherDot2 | MPMX19_04512 | | C4-dicarboxylate transport transcriptional regulatory protein DctD | insig. | 38 | 86 |
| | Bacteroides ovatus ATCC 8483 | BACOVA_05207 | | Sigma-54 interaction domain protein | no data | 42 | 60 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_01730 | atoC | sigma-54-dependent Fis family transcriptional regulator | insig. | 40 | 75 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS04990 | | sigma-54 dependent transcriptional regulator | cofit | 46 | 57 |
| | Bacteroides thetaiotaomicron VPI-5482 | BT4375 | | transcriptional regulator (NCBI ptt file) | no data | 44 | 58 |
| | Methylophilus sp. DMC18 | GFF1426 | | Transcriptional regulatory protein ZraR | insig. | 39 | 70 |
| | Ralstonia solanacearum GMI1000 | RS_RS25105 | | sigma-54-dependent Fis family transcriptional regulator | cofit | 40 | 71 |
| | Dyella japonica UNC79MFTsu3.2 | ABZR86_RS02950 | | sigma-54 dependent transcriptional regulator | insig. | 36 | 87 |
| | Marinobacter adhaerens HP15 | HP15_523 | | two component, sigma54 specific, transcriptional regulator, Fis family | strong | 39 | 68 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_01292 | | Regulatory protein AtoC | cofit | 38 | 71 |
| | Bacteroides stercoris CC31F | HMPREF1181_RS05760 | | sigma-54-dependent Fis family transcriptional regulator | no data | 44 | 55 |
| | Marinobacter adhaerens HP15 | HP15_725 | | two component, sigma54 specific, transcriptional regulator, Fis family | strong | 41 | 68 |
| | Rhodopseudomonas palustris CGA009 | TX73_007390 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 39 | 68 |
| | Rhodopseudomonas palustris CGA009 | TX73_007055 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 40 | 68 |
| | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS23315 | | sigma-54-dependent Fis family transcriptional regulator | strong | 42 | 68 |
| | Ralstonia solanacearum UW163 | UW163_RS16565 | | sigma-54-dependent Fis family transcriptional regulator | strong | 42 | 68 |
| | Azospirillum sp. SherDot2 | MPMX19_06333 | | Regulatory protein AtoC | insig. | 39 | 70 |
| | Pseudomonas sp. S08-1 | OH686_17260 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 42 | 71 |
| | Ralstonia solanacearum PSI07 | RPSI07_RS07835 | | sigma-54-dependent Fis family transcriptional regulator | strong | 41 | 68 |
| | Escherichia coli ECOR38 | HEPCGN_21015 | hyfR | DNA-binding transcriptional activator HyfR | insig. | 39 | 68 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_16225 | | Fis family transcriptional regulator | insig. | 38 | 73 |
| | Xanthobacter sp. DMC5 | GFF2901 | | C4-dicarboxylate transport transcriptional regulatory protein DctD | insig. | 41 | 72 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS03980 | | Fis family transcriptional regulator | strong | 40 | 74 |
| | Pseudomonas simiae WCS417 | PS417_05525 | | Fis family transcriptional regulator | strong | 37 | 75 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS05610 | | sigma-54-dependent Fis family transcriptional regulator | strong | 37 | 75 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS05610 | | sigma-54-dependent Fis family transcriptional regulator | strong | 37 | 75 |
| | Pseudomonas stutzeri RCH2 | Psest_0999 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | strong | 48 | 51 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS14515 | | sigma-54 dependent transcriptional regulator | insig. | 46 | 58 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0118 | ntrC | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | insig. | 40 | 69 |
| | Ralstonia solanacearum GMI1000 | RS_RS25110 | | sigma-54-dependent Fis family transcriptional regulator | cofit | 40 | 68 |
| | Escherichia coli BL21 | ECD_02383 | | hydrogenase-4 transcriptional activator | cofit | 39 | 68 |
| | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.2800.1 | | Flagellar regulatory protein FleQ | sig. | 39 | 72 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF4188 | | Response regulator of zinc sigma-54-dependent two-component system | insig. | 38 | 75 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS34130 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 40 | 71 |
| | Escherichia coli ECRC100 | OKFHMN_21850 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 39 | 68 |
| | Escherichia coli ECRC101 | MCAODC_12380 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 39 | 68 |
| | Escherichia coli ECRC102 | NIAGMN_19620 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 39 | 68 |
| | Escherichia coli ECRC98 | JDDGAC_25795 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 39 | 68 |
| | Escherichia coli ECRC99 | KEDOAH_06370 | hyfR | DNA-binding transcriptional regulator HyfR | no data | 39 | 68 |
| | Escherichia coli BW25113 | b2491 | hyfR | putative 2-component regulator, interaction with sigma 54 (VIMSS) | sig. | 39 | 68 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_14200 | | transcriptional regulator | insig. | 39 | 75 |
| | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.1353.1 | | Type IV fimbriae expression regulatory protein PilR | sig. | 39 | 75 |
| | Pseudomonas sp. S08-1 | OH686_13325 | | Two component, Sigma-54 Specific, central transcriptional regulator of acidic amino acid uptake | cofit | 38 | 74 |
| | Pseudomonas sp. BP01 | JOY50_RS25235 | prpR | propionate catabolism operon regulatory protein PrpR | insig. | 38 | 69 |
| | Ralstonia sp. UNC404CL21Col | ABZR87_RS23515 | | sigma-54 dependent transcriptional regulator | strong | 40 | 68 |
| | Escherichia coli ECRC62 | BNILDI_12310 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 39 | 68 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01235 | | DNA-binding transcriptional activator HyfR | cofit | 39 | 68 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS05575 | | Fis family transcriptional regulator | strong | 39 | 68 |
| | Rhodospirillum rubrum S1H | Rru_A1388 | | Transcriptional Regulator, NifA subfamily, Fis Family (NCBI) | cofit | 39 | 68 |
| | Escherichia coli ECOR27 | NOLOHH_05465 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 37 | 75 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_29980 | | two-component system response regulator CbrB | strong | 48 | 50 |
| | Dyella japonica UNC79MFTsu3.2 | ABZR86_RS11070 | | sigma-54 dependent transcriptional regulator | cofit | 46 | 51 |
| | Shewanella sp. ANA-3 | Shewana3_1488 | | sigma-54 dependent trancsriptional regulator (RefSeq) | insig. | 46 | 50 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_2675 | | Nitrogen regulation protein NR(I) | insig. | 43 | 64 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS21680 | | sigma-54-dependent Fis family transcriptional regulator | no data | 41 | 63 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_16075 | | Fis family transcriptional regulator | strong | 40 | 68 |
| | Pseudomonas sp. RS175 | PFR28_03718 | | Transcriptional regulatory protein ZraR | strong | 40 | 71 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_5156 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 39 | 71 |
| | Shewanella oneidensis MR-1 | SO3059 | | formate hydrogenlyase transcriptional activator, putative (NCBI ptt file) | insig. | 39 | 69 |
| | Escherichia fergusonii Becca | EFB2_01635 | | Regulatory protein AtoC | insig. | 38 | 68 |
| | Escherichia coli ECOR38 | HEPCGN_22430 | atoC | acetoacetate metabolism transcriptional regulator AtoC | insig. | 38 | 68 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS12965 | | acetoacetate metabolism transcriptional regulator AtoC | no data | 38 | 68 |
| | Escherichia coli ECOR38 | HEPCGN_11960 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 37 | 75 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS23090 | | sigma-54-dependent response regulator transcription factor ZraR | insig. | 37 | 75 |
| | Escherichia coli BL21 | ECD_03881 | | fused DNA-binding response regulator in two-component regulatory system with ZraS: response regulator/sigma54 interaction protein | insig. | 37 | 75 |
| | Escherichia fergusonii Becca | EFB2_04606 | | Transcriptional regulatory protein ZraR | insig. | 37 | 75 |
| | Escherichia coli ECRC62 | BNILDI_06055 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 37 | 75 |
| | Rahnella sp. WP5 | EX31_RS15395 | | nif-specific transcriptional activator NifA | insig. | 40 | 69 |
| | Escherichia coli BL21 | ECD_02147 | | fused response regulator of ato operon, in two-component system with AtoS: response regulator/sigma54 interaction protein | insig. | 37 | 68 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01490 | | Regulatory protein AtoC | insig. | 37 | 68 |
| | Escherichia coli BW25113 | b2220 | atoC | fused response regulator of ato operon, in two-component system with AtoS: response regulator/sigma54 interaction protein (NCBI) | insig. | 37 | 68 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_04045 | | Transcriptional regulatory protein ZraR | insig. | 37 | 75 |
| | Escherichia coli BW25113 | b4004 | zraR | fused DNA-binding response regulator in two-component regulatory system with ZraS: response regulator/sigma54 interaction protein (NCBI) | insig. | 37 | 75 |
| | Paraburkholderia graminis OAS925 | ABIE53_001365 | | DNA-binding NtrC family response regulator | strong | 39 | 68 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_00790 | | two-component response regulator PilR | strong | 39 | 75 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_2858 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 48 | 50 |
| | Pseudomonas putida KT2440 | PP_4696 | | Nitrogen regulation protein NR(I) | strong | 47 | 50 |
| | Parabacteroides merdae CL09T00C40 | HMPREF1078_RS14565 | | sigma-54 dependent transcriptional regulator | no data | 45 | 51 |
| | Escherichia coli ECOR27 | NOLOHH_13500 | | Fis family transcriptional regulator | insig. | 39 | 67 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_0831 | | Two-component response regulator CbrB | sig. | 37 | 70 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_0831 | | Two-component response regulator CbrB | no data | 37 | 70 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_00240 | | two component, sigma54 specific, transcriptional regulator, NtrC subfamily, Fis family | strong | 39 | 68 |
| | Ralstonia sp. UNC404CL21Col | ABZR87_RS23520 | | sigma-54 dependent transcriptional regulator | insig. | 40 | 68 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_05045 | | transcriptional regulator FleQ | strong | 38 | 70 |
| | Variovorax sp. OAS795 | ABID97_RS11955 | | sigma-54 dependent transcriptional regulator | insig. | 36 | 73 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS13000 | | sigma-54-dependent Fis family transcriptional regulator | strong | 43 | 57 |
| | Caulobacter crescentus NA1000 | CCNA_03424 | | AAA-family response regulator tacA | strong | 37 | 75 |
| | Caulobacter crescentus NA1000 Δfur | CCNA_03424 | | AAA-family response regulator tacA | cofit | 37 | 75 |