| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU2275 | rocR | sigma-54 dependent transcriptional regulator (TIGR) | insig. | 100 | 100 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0569 | flrA | sigma-54 dependent transcriptional regulator (TIGR) | sig. | 37 | 98 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF610 | | Putative sensory histidine kinase YfhA | insig. | 41 | 69 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS11715 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 38 | 74 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS11715 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 38 | 74 |
| | Lysobacter sp. OAE881 | ABIE51_RS04850 | | sigma-54 dependent transcriptional regulator | strong | 40 | 71 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF1926 | | Arginine utilization regulatory protein RocR | insig. | 32 | 98 |
| | Ralstonia sp. UNC404CL21Col | ABZR87_RS01750 | | sigma-54 dependent transcriptional regulator | strong | 38 | 77 |
| | Pseudomonas sp. S08-1 | OH686_00830 | | Transcriptional regulator | cofit | 35 | 99 |
| | Variovorax sp. SCN45 | GFF7323 | | Transcriptional response regulatory protein GlrR | insig. | 40 | 69 |
| | Dechlorosoma suillum PS | Dsui_2360 | | response regulator with CheY-like receiver, AAA-type ATPase, and DNA-binding domains | cofit | 49 | 51 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_2149 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | strong | 38 | 72 |
| | Rahnella sp. WP5 | EX31_RS20615 | | two-component system response regulator GlrR | insig. | 39 | 69 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_09510 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 44 | 56 |
| | Pseudomonas simiae WCS417 | PS417_11085 | | ATPase AAA | insig. | 37 | 74 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS12650 | | sigma-54 dependent transcriptional regulator | insig. | 43 | 56 |
| | Pseudomonas stutzeri RCH2 | Psest_1767 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | insig. | 38 | 74 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF5124 | | Sigma-54 dependent transcriptional regulator | insig. | 36 | 98 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_2153 | | PAS modulated sigma54 specific transcriptional regulator, Fis family (RefSeq) | insig. | 53 | 48 |
| | Variovorax sp. OAS795 | ABID97_RS06460 | | sigma 54-interacting transcriptional regulator | cofit | 40 | 69 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS05020 | | sigma-54 dependent transcriptional regulator | strong | 39 | 73 |
| | Pseudomonas orientalis W4I3 | QF045_RS13490 | | sigma 54-interacting transcriptional regulator | insig. | 38 | 74 |
| | Pseudomonas aeruginosa MRSN321 | PFGADD_03930 | ddaR | transcriptional regulator DdaR | sig. | 32 | 98 |
| | Pseudomonas aeruginosa PUPa3 | NPBIFN_03981 | ddaR | transcriptional regulator DdaR | insig. | 32 | 98 |
| | Caulobacter crescentus NA1000 | CCNA_03424 | | AAA-family response regulator tacA | strong | 46 | 52 |
| | Caulobacter crescentus NA1000 Δfur | CCNA_03424 | | AAA-family response regulator tacA | cofit | 46 | 52 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS01040 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 44 | 53 |
| | Pseudomonas putida KT2440 | PP_2790 | | Sigma-54 dependent sensory box protein | strong | 36 | 74 |
| | Klebsiella michiganensis M5al | BWI76_RS21250 | | two-component system response regulator GlrR | strong | 38 | 69 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU1063 | flrC | transcriptional regulatory protein (TIGR) | strong | 40 | 76 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_2411 | | sigma54 specific transcriptional regulator, Fis family (RefSeq) | insig. | 40 | 73 |
| | Pantoea sp. MT58 | IAI47_19790 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 45 | 56 |
| | Acidovorax sp. GW101-3H11 | Ac3H11_63 | | Sigma-54 dependent transcriptional regulator | insig. | 40 | 72 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_05620 | | transcriptional regulator DdaR | insig. | 32 | 98 |
| | Alteromonas macleodii MIT1002 | MIT1002_01326 | | Quorum-sensing regulator protein F | insig. | 36 | 76 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_4389 | | Sigma-54 dependent transcriptional regulator | insig. | 38 | 73 |
| | Pseudomonas stutzeri RCH2 | Psest_1765 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | strong | 36 | 79 |
| | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS09115 | | sigma-54 dependent transcriptional regulator | insig. | 47 | 52 |
| | Shewanella oneidensis MR-1 | SO3059 | | formate hydrogenlyase transcriptional activator, putative (NCBI ptt file) | insig. | 36 | 73 |
| | Erwinia tracheiphila HP pepo 2.2 | IJEDHG_14600 | | sigma-54-dependent Fis family transcriptional regulator | no data | 36 | 71 |
| | Escherichia fergusonii Becca | EFB2_01635 | | Regulatory protein AtoC | insig. | 36 | 74 |
| | Escherichia coli ECOR38 | HEPCGN_22430 | atoC | acetoacetate metabolism transcriptional regulator AtoC | insig. | 36 | 74 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS12965 | | acetoacetate metabolism transcriptional regulator AtoC | no data | 36 | 74 |
| | Escherichia coli BL21 | ECD_02147 | | fused response regulator of ato operon, in two-component system with AtoS: response regulator/sigma54 interaction protein | insig. | 36 | 74 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01490 | | Regulatory protein AtoC | insig. | 36 | 74 |
| | Escherichia coli BW25113 | b2220 | atoC | fused response regulator of ato operon, in two-component system with AtoS: response regulator/sigma54 interaction protein (NCBI) | insig. | 36 | 74 |
| | Shewanella sp. ANA-3 | Shewana3_1488 | | sigma-54 dependent trancsriptional regulator (RefSeq) | insig. | 36 | 73 |
| | Erwinia tracheiphila SCR3 | LU632_RS20500 | | sigma-54 dependent transcriptional regulator | no data | 36 | 71 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF2455 | | Putative sensory histidine kinase YfhA | strong | 37 | 69 |
| | Escherichia fergusonii Becca | EFB2_01342 | | Transcriptional regulatory protein QseF | insig. | 37 | 69 |
| | Escherichia coli ECOR27 | NOLOHH_13170 | qseF | two-component system response regulator QseF/GlrR | strong | 37 | 69 |
| | Escherichia coli ECOR38 | HEPCGN_20640 | qseF | two-component system response regulator QseF/GlrR | strong | 37 | 69 |
| | Escherichia coli ECRC62 | BNILDI_11970 | qseF | two-component system response regulator QseF/GlrR | strong | 37 | 69 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01153 | | Transcriptional regulatory protein GlrR | insig. | 37 | 69 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS14455 | | two-component system response regulator GlrR | strong | 37 | 69 |
| | Pseudomonas sp. S08-1 | OH686_02855 | | Flagellar regulatory protein FleQ | cofit | 36 | 79 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS32695 | | Fis family transcriptional regulator | insig. | 38 | 71 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS12530 | | transcriptional regulator | insig. | 38 | 72 |
| | Pseudomonas aeruginosa PUPa3 | NPBIFN_02936 | prpR | propionate catabolism operon regulatory protein PrpR | insig. | 35 | 74 |
| | Pseudomonas stutzeri RCH2 | Psest_4174 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | insig. | 39 | 72 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS30045 | | ATPase AAA | insig. | 39 | 75 |
| | Marinobacter adhaerens HP15 | HP15_523 | | two component, sigma54 specific, transcriptional regulator, Fis family | strong | 38 | 75 |
| | Pseudomonas aeruginosa MRSN321 | PFGADD_02899 | prpR | propionate catabolism operon regulatory protein PrpR | insig. | 35 | 74 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_10840 | | propionate catabolism operon regulatory protein PrpR | sig. | 35 | 74 |
| | Serratia liquefaciens MT49 | IAI46_12235 | | sigma 54-interacting transcriptional regulator | insig. | 45 | 55 |
| | Vibrio cholerae E7946 ATCC 55056 | CSW01_14600 | | AAA family ATPase | insig. | 37 | 72 |
| | Escherichia coli BL21 | ECD_02446 | | response regulator regulating glmY sRNA in two-component system with sensor protein GlrK | sig. | 37 | 69 |
| | Escherichia coli ECRC100 | OKFHMN_21495 | qseF | two-component system response regulator QseF/GlrR | cofit | 37 | 69 |
| | Escherichia coli ECRC101 | MCAODC_12025 | qseF | two-component system response regulator QseF/GlrR | cofit | 37 | 69 |
| | Escherichia coli ECRC102 | NIAGMN_19265 | qseF | two-component system response regulator QseF/GlrR | cofit | 37 | 69 |
| | Escherichia coli ECRC98 | JDDGAC_25160 | qseF | two-component system response regulator QseF/GlrR | cofit | 37 | 69 |
| | Escherichia coli ECRC99 | KEDOAH_06725 | qseF | two-component system response regulator QseF/GlrR | no data | 37 | 69 |
| | Escherichia coli BW25113 | b2554 | yfhA | predicted DNA-binding response regulator in two-component system (NCBI) | sig. | 37 | 69 |
| | Dechlorosoma suillum PS | Dsui_0135 | | response regulator with CheY-like receiver, AAA-type ATPase, and DNA-binding domains | cofit | 39 | 71 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_02520 | | Anaerobic nitric oxide reductase transcription regulator NorR | cofit | 38 | 74 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_29210 | | AAA family ATPase | insig. | 46 | 48 |
| | Rhodospirillum rubrum S1H | Rru_A0326 | | Transcriptional Regulator, NifA subfamily, Fis Family (NCBI) | insig. | 43 | 58 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS26850 | | ATPase AAA | strong | 40 | 60 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS10130 | | sigma 54-interacting transcriptional regulator | insig. | 38 | 73 |
| | Klebsiella pneumoniae MKP103 | KDGMDA_28370 | | two-component system response regulator QseF/GlrR | insig. | 36 | 71 |
| | Klebsiella pneumoniae MRSN742743 | GJGHJB_01232 | qseF | two-component system response regulator QseF/GlrR | sig. | 36 | 71 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_1790 | | Sigma-54 dependent transcriptional regulator | insig. | 47 | 48 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS23710 | | response regulator GlrR | insig. | 40 | 69 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0110 | ntrC | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | cofit | 37 | 72 |
| | Acidovorax sp. GW101-3H11 | Ac3H11_4011 | | Putative sensory histidine kinase YfhA | sig. | 38 | 69 |
| | Dickeya dianthicola 67-19 | HGI48_RS15735 | | two-component system response regulator GlrR | insig. | 37 | 69 |
| | Dickeya dianthicola ME23 | DZA65_RS16815 | | two-component system response regulator GlrR | insig. | 37 | 69 |
| | Marinobacter adhaerens HP15 | HP15_2330 | | two component, sigma54 specific, transcriptional regulator, Fis family | strong | 35 | 81 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU2114 | atoC | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | insig. | 46 | 50 |
| | Rhodopseudomonas palustris CGA009 | TX73_021705 | | sigma-54 dependent transcriptional regulator | sig. | 46 | 52 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_02891 | | transcriptional regulator, propionate catabolism operon regulatory protein | sig. | 41 | 60 |
| | Dyella japonica UNC79MFTsu3.2 | ABZR86_RS11070 | | sigma-54 dependent transcriptional regulator | cofit | 38 | 74 |
| | Variovorax sp. OAS795 | ABID97_RS17700 | | sigma 54-interacting transcriptional regulator | insig. | 38 | 73 |
| | Agrobacterium fabrum C58 | Atu3764 | | sigma 54 dependent transcriptional activator | sig. | 37 | 74 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_1372 | | sigma-54 dependent transcriptional regulator | insig. | 36 | 71 |
| | Azospirillum sp. SherDot2 | MPMX19_06065 | | Anaerobic nitric oxide reductase transcription regulator NorR | cofit | 32 | 99 |
| | Dechlorosoma suillum PS | Dsui_3286 | | response regulator with CheY-like receiver, AAA-type ATPase, and DNA-binding domains | insig. | 47 | 50 |
| | Klebsiella michiganensis M5al | BWI76_RS10230 | | AAA family ATPase | no data | 45 | 49 |
| | Rhizobium sp. OAE497 | ABIE40_RS16175 | | sigma-54 dependent transcriptional regulator | strong | 35 | 72 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS15995 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 44 | 53 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU2106 | flrC | sigma-54 dependent transcriptional regulator (TIGR) | no data | 43 | 63 |
| | Azospirillum brasilense Sp245 | AZOBR_RS21185 | | Fis family transcriptional regulator | insig. | 39 | 74 |
| | Variovorax sp. SCN45 | GFF518 | | Transcriptional regulator containing PAS, AAA-type ATPase, and DNA-binding domains | insig. | 38 | 73 |
| | Pseudomonas aeruginosa MRSN321 | PFGADD_04033 | fleQ | transcriptional regulator FleQ | strong | 37 | 74 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_05045 | | transcriptional regulator FleQ | strong | 37 | 74 |
| | Pseudomonas aeruginosa PUPa3 | NPBIFN_04081 | fleQ | transcriptional regulator FleQ | strong | 37 | 74 |
| | Dickeya dadantii 3937 | DDA3937_RS15640 | | two-component system response regulator GlrR | cofit | 37 | 69 |
| | Cellulophaga baltica 18 | M666_RS12540 | | sigma 54-interacting response regulator | insig. | 44 | 49 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_03364 | | Anaerobic nitric oxide reductase transcription regulator NorR | cofit | 39 | 74 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1324 | | sigma54 specific transcriptional regulator, Fis family (RefSeq) | strong | 38 | 71 |
| | Pseudomonas stutzeri RCH2 | Psest_0833 | | Transcriptional regulator containing GAF, AAA-type ATPase, and DNA binding domains | sig. | 37 | 71 |
| | Pseudomonas sp. S08-1 | OH686_16390 | | Type IV fimbriae expression regulatory protein PilR | cofit | 37 | 72 |
| | Acinetobacter radioresistens SK82 | MPMX26_00910 | | Phenol regulator MopR | insig. | 35 | 74 |
| | Ralstonia solanacearum PSI07 | RPSI07_RS11155 | | sigma-54-dependent Fis family transcriptional regulator | cofit | 35 | 77 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_03547 | | Transcriptional regulator containing PAS, AAA-type ATPase, and DNA-binding Fis domains | insig. | 35 | 98 |
| | Bosea sp. OAE506 | ABIE41_RS06145 | | sigma-54 dependent transcriptional regulator | sig. | 45 | 52 |
| | Pseudomonas protegens RBAN4 | FABNJH_21460 | sfnR | Sigma54-dependent transcriptional regulator SfnR | insig. | 44 | 52 |
| | Paraburkholderia graminis OAS925 | ABIE53_004468 | | transcriptional regulator with GAF, ATPase, and Fis domain | insig. | 40 | 63 |
| | Paraburkholderia graminis OAS925 | ABIE53_004708 | | transcriptional regulator with PAS, ATPase and Fis domain | insig. | 39 | 73 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_3020 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | strong | 37 | 76 |
| | Rhodospirillum rubrum S1H | Rru_A1388 | | Transcriptional Regulator, NifA subfamily, Fis Family (NCBI) | cofit | 39 | 72 |
| | Serratia liquefaciens MT49 | IAI46_19460 | | two-component system response regulator GlrR | sig. | 37 | 69 |
| | Marinobacter adhaerens HP15 | HP15_4023 | | helix-turn-helix, Fis-type | insig. | 36 | 73 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_3248 | | Helix-turn-helix, Fis-type | insig. | 46 | 49 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_3248 | | Helix-turn-helix, Fis-type | insig. | 46 | 49 |
| | Escherichia coli ECOR27 | NOLOHH_11625 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | insig. | 45 | 51 |
| | Escherichia coli ECRC62 | BNILDI_10150 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | cofit | 45 | 51 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_00846 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 45 | 51 |
| | Escherichia coli BL21 | ECD_02702 | | putative sigma-54-interacting transcriptional activator | insig. | 45 | 51 |
| | Escherichia fergusonii Becca | EFB2_01032 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 45 | 51 |
| | Escherichia coli ECOR38 | HEPCGN_18985 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | insig. | 45 | 51 |
| | Escherichia coli ECRC100 | OKFHMN_19695 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | cofit | 45 | 51 |
| | Escherichia coli ECRC101 | MCAODC_10220 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | insig. | 45 | 51 |
| | Escherichia coli ECRC102 | NIAGMN_17465 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | insig. | 45 | 51 |
| | Escherichia coli ECRC98 | JDDGAC_23340 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | insig. | 45 | 51 |
| | Escherichia coli BW25113 | b2869 | ygeV | predicted DNA-binding transcriptional regulator (NCBI) | insig. | 45 | 51 |
| | Phocaeicola vulgatus CL09T03C04 | HMPREF1058_RS04160 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 44 | 49 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU2894 | flrA | sigma-54 dependent transcriptional regulator (TIGR) | strong | 39 | 71 |
| | Pseudomonas simiae WCS417 | PS417_19815 | | Fis family transcriptional regulator | no data | 39 | 70 |
| | Xanthobacter sp. DMC5 | GFF4834 | | Regulatory protein AtoC | insig. | 38 | 73 |
| | Marinobacter adhaerens HP15 | HP15_2328 | | two component, sigma54 specific, transcriptional regulator, Fis family | strong | 37 | 72 |
| | Pantoea agglomerans CFBP13505 P0401 | PagCFBP13516_RS05235 | glrR | two-component system response regulator GlrR | cofit | 36 | 69 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_02351 | | Phenol regulator MopR | cofit | 36 | 75 |
| | Shewanella loihica PV-4 | Shew_2282 | | Fis family transcriptional regulator (RefSeq) | insig. | 35 | 72 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS11255 | | Fis family transcriptional regulator | strong | 34 | 98 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS14390 | | ATPase AAA | strong | 34 | 80 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS17060 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 44 | 49 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS21785 | | sigma-54-dependent Fis family transcriptional regulator | cofit | 39 | 70 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS21785 | | sigma-54-dependent Fis family transcriptional regulator | cofit | 39 | 70 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS04800 | | sigma-54 dependent transcriptional regulator | strong | 38 | 73 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_4357 | | Flagellar regulatory protein FleQ | insig. | 37 | 79 |
| | Azospirillum sp. SherDot2 | MPMX19_03559 | | Acetoin dehydrogenase operon transcriptional activator AcoR | insig. | 36 | 77 |
| | Escherichia coli BL21 | ECD_02383 | | hydrogenase-4 transcriptional activator | cofit | 46 | 48 |
| | Escherichia coli ECRC100 | OKFHMN_21850 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 46 | 48 |
| | Escherichia coli ECRC101 | MCAODC_12380 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 46 | 48 |
| | Escherichia coli ECRC102 | NIAGMN_19620 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 46 | 48 |
| | Escherichia coli ECRC98 | JDDGAC_25795 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 46 | 48 |
| | Escherichia coli ECRC99 | KEDOAH_06370 | hyfR | DNA-binding transcriptional regulator HyfR | no data | 46 | 48 |
| | Escherichia coli BW25113 | b2491 | hyfR | putative 2-component regulator, interaction with sigma 54 (VIMSS) | sig. | 46 | 48 |
| | Pseudomonas simiae WCS417 | PS417_12160 | | Fis family transcriptional regulator | insig. | 38 | 73 |
| | Pseudomonas segetis P6 | ACVTMO_RS00675 | | sigma-54 interaction domain-containing protein | insig. | 37 | 78 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_27970 | | Fis family transcriptional regulator | insig. | 36 | 71 |
| | Escherichia coli ECRC62 | BNILDI_12310 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 46 | 48 |
| | Ralstonia solanacearum UW163 | UW163_RS07540 | | sigma-54-dependent Fis family transcriptional regulator | strong | 45 | 52 |
| | Pseudomonas simiae WCS417 | PS417_05525 | | Fis family transcriptional regulator | strong | 36 | 73 |
| | Pantoea sp. MT58 | IAI47_04945 | | two-component system response regulator GlrR | sig. | 36 | 69 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01235 | | DNA-binding transcriptional activator HyfR | cofit | 46 | 48 |
| | Xanthobacter sp. DMC5 | GFF4458 | | Transcriptional regulatory protein ZraR | insig. | 43 | 59 |
| | Parabacteroides merdae CL09T00C40 | HMPREF1078_RS14380 | | sigma-54 dependent transcriptional regulator | insig. | 40 | 55 |
| | Erwinia amylovora T8 | OLJFJH_10330 | | two-component system response regulator QseF/GlrR | cofit | 37 | 69 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS05610 | | sigma-54-dependent Fis family transcriptional regulator | strong | 37 | 73 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS05610 | | sigma-54-dependent Fis family transcriptional regulator | strong | 37 | 73 |
| | Escherichia coli ECOR38 | HEPCGN_21015 | hyfR | DNA-binding transcriptional activator HyfR | insig. | 46 | 48 |
| | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS06085 | | sigma-54-dependent Fis family transcriptional regulator | strong | 45 | 52 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_2200 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | no data | 37 | 73 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0619 | | sigma-54 dependent transcriptional regulator (TIGR) | insig. | 37 | 71 |
| | Pectobacterium carotovorum WPP14 | HER17_RS05925 | | two-component system response regulator GlrR | cofit | 37 | 69 |
| | Pseudomonas segetis P6 | ACVTMO_RS15605 | | sigma-54 dependent transcriptional regulator | strong | 37 | 76 |
| | Marinobacter adhaerens HP15 | HP15_1011 | | two component, sigma54 specific, transcriptional regulator, Fis family | insig. | 32 | 86 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS12705 | | transcriptional regulator | insig. | 37 | 74 |
| | Pseudomonas putida KT2440 | PP_4373 | | Transcriptional regulator FleQ | strong | 37 | 78 |
| | Pseudomonas simiae WCS417 | PS417_09450 | | Fis family transcriptional regulator | insig. | 44 | 52 |
| | Pseudomonas sp. SVBP6 | COO64_RS21290 | | sigma-54 dependent transcriptional regulator | insig. | 39 | 67 |
| | Pseudomonas protegens RBAN4 | FABNJH_24715 | | Sigma-54-dependent Fis family transcriptional regulator | insig. | 37 | 73 |
| | Pseudomonas orientalis W4I3 | QF045_RS21955 | | sigma-54 dependent transcriptional regulator | cofit | 37 | 78 |
| | Pseudomonas simiae WCS417 | PS417_19825 | | ATPase AAA | strong | 37 | 78 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_3461 | | Helix-turn-helix, Fis-type | strong | 37 | 78 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_3461 | | Helix-turn-helix, Fis-type | cofit | 37 | 78 |
| | Pseudomonas sp. BP01 | JOY50_RS00705 | fleQ | transcriptional regulator FleQ | sig. | 37 | 78 |
| | Pseudomonas sp. SVBP6 | COO64_RS21300 | fleQ | transcriptional regulator FleQ | cofit | 36 | 79 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_04161 | | Regulatory protein AtoC | cofit | 39 | 70 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_3599 | | Flagellar regulatory protein FleQ | insig. | 37 | 79 |
| | Variovorax sp. SCN45 | GFF3669 | | Two-component system response regulator protein | no data | 46 | 48 |
| | Alteromonas macleodii MIT1002 | MIT1002_03186 | | Nitrogen regulation protein NR(I) | strong | 36 | 72 |
| | Pseudomonas sp. RS175 | PFR28_00828 | | Anaerobic nitric oxide reductase transcription regulator NorR | strong | 37 | 78 |
| | Shewanella loihica PV-4 | Shew_3082 | | sigma-54 dependent trancsriptional regulator (RefSeq) | insig. | 35 | 74 |
| | Rhodopseudomonas palustris CGA009 | TX73_010880 | | sigma 54-interacting transcriptional regulator | insig. | 35 | 76 |
| | Fusobacterium nucleatum SB010 | HUW76_06425 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 32 | 78 |
| | Erwinia tracheiphila HP pepo 2.2 | IJEDHG_02930 | qseF | two-component system response regulator QseF/GlrR | cofit | 37 | 69 |
| | Erwinia tracheiphila SCR3 | LU632_RS17930 | glrR | two-component system response regulator GlrR | insig. | 37 | 69 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_0215 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | strong | 46 | 51 |
| | Pseudomonas orientalis W4I3 | QF045_RS12080 | | sigma-54 dependent transcriptional regulator | cofit | 44 | 51 |
| | Escherichia coli ECRC99 | KEDOAH_08435 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | no data | 44 | 51 |
| | Azospirillum sp. SherDot2 | MPMX19_03130 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 42 | 57 |
| | Sinorhizobium meliloti 1021 | SMc04011 | | sigma-54-dependent transcription regulator protein | insig. | 42 | 54 |
| | Paraburkholderia graminis OAS925 | ABIE53_005903 | | propionate catabolism operon transcriptional regulator | strong | 40 | 60 |
| | Escherichia coli ECOR27 | NOLOHH_05465 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 38 | 71 |
| | Pseudomonas protegens RBAN4 | FABNJH_08495 | atoC | DNA-binding transcriptional response regulator, NtrC family, contains REC, AAA-type ATPase, and a Fis-type DNA-binding domains | insig. | 37 | 78 |
| | Pseudomonas sp. DMC3 | GFF2445 | | Anaerobic nitric oxide reductase transcription regulator NorR | cofit | 37 | 78 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_03855 | | AAA family ATPase | strong | 37 | 78 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_2597 | | Flagellar regulatory protein FleQ | strong | 37 | 78 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_1969 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | insig. | 47 | 52 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU3220 | atoC | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | no data | 45 | 50 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_04045 | | Transcriptional regulatory protein ZraR | insig. | 44 | 51 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_02112 | | Sigma54-dependent transcriptional activator SfnR | cofit | 43 | 52 |
| | Vibrio cholerae E7946 ATCC 55056 | CSW01_09635 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 42 | 51 |
| | Pseudomonas aeruginosa MRSN321 | PFGADD_04031 | fleR | sigma-54-dependent response regulator transcription factor FleR | strong | 38 | 72 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_05055 | | sigma-54-dependent response regulator transcription factor FleR | strong | 38 | 72 |
| | Pseudomonas aeruginosa PUPa3 | NPBIFN_04079 | fleR | sigma-54-dependent response regulator transcription factor FleR | strong | 38 | 72 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS34340 | | Fis family transcriptional regulator | strong | 38 | 73 |
| | Pseudomonas orientalis W4I3 | QF045_RS21945 | | sigma-54 dependent transcriptional regulator | insig. | 38 | 70 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_01292 | | Regulatory protein AtoC | cofit | 38 | 73 |
| | Pseudomonas sp. RS175 | PFR28_02055 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 37 | 73 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_01730 | atoC | sigma-54-dependent Fis family transcriptional regulator | cofit | 37 | 73 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_18660 | | AAA family ATPase | strong | 37 | 78 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS23090 | | sigma-54-dependent response regulator transcription factor ZraR | insig. | 37 | 71 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS21795 | | sigma-54-dependent Fis family transcriptional regulator | strong | 37 | 78 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS21795 | | sigma-54-dependent Fis family transcriptional regulator | strong | 37 | 78 |
| | Rhodospirillum rubrum S1H | Rru_A0540 | | Two Component, Sigma54 Specific, Transcriptional Regulator, Fis family (NCBI) | insig. | 37 | 79 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF595 | | two component, sigma54 specific, transcriptional regulator, Fis family | strong | 37 | 76 |
| | Pseudomonas aeruginosa MRSN321 | PFGADD_04755 | pilR | two-component response regulator PilR | strong | 37 | 76 |
| | Enterobacter sp. TBS_079 | MPMX20_03423 | | Transcriptional regulatory protein QseF | sig. | 36 | 69 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS16115 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 45 | 50 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS16115 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 45 | 50 |
| | Klebsiella michiganensis M5al | BWI76_RS17490 | | Fis family transcriptional regulator | insig. | 45 | 51 |
| | Ralstonia solanacearum GMI1000 | RS_RS17240 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 44 | 49 |
| | Alteromonas macleodii MIT1002 | MIT1002_03048 | | Transcriptional regulatory protein ZraR | insig. | 43 | 51 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_03783 | | Transcriptional regulator containing GAF, AAA-type ATPase, and DNA binding domains | insig. | 38 | 66 |
| | Escherichia coli BL21 | ECD_03881 | | fused DNA-binding response regulator in two-component regulatory system with ZraS: response regulator/sigma54 interaction protein | insig. | 38 | 71 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_04163 | | Anaerobic nitric oxide reductase transcription regulator NorR | strong | 37 | 78 |
| | Acidovorax sp. GW101-3H11 | Ac3H11_3315 | | Functional role page for Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 37 | 72 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_00790 | | two-component response regulator PilR | strong | 37 | 76 |
| | Pseudomonas aeruginosa PUPa3 | NPBIFN_04816 | pilR | two-component response regulator PilR | strong | 37 | 76 |
| | Pseudomonas sp. SVBP6 | COO64_RS23875 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 34 | 82 |
| | Escherichia coli ECOR27 | NOLOHH_13500 | | Fis family transcriptional regulator | insig. | 46 | 47 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS10100 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 43 | 52 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS10100 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 43 | 52 |
| | Pseudomonas orientalis W4I3 | QF045_RS08450 | | sigma-54 dependent transcriptional regulator | insig. | 43 | 58 |
| | Pseudomonas sp. RS175 | PFR28_01986 | | Phenol regulator MopR | insig. | 38 | 71 |
| | Enterobacter asburiae PDN3 | EX28DRAFT_0096 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | sig. | 36 | 69 |