| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Sphingobium sp. HT1-2 | GFF989 | | Psp operon transcriptional activator | cofit | 100 | 100 |
| o | Sphingomonas koreensis DSMZ 15582 | Ga0059261_4149 | | psp operon transcriptional activator PspF | strong | 66 | 99 |
| o | Shewanella loihica PV-4 | Shew_2497 | | sigma-54 dependent trancsriptional regulator (RefSeq) | strong | 53 | 99 |
| o | Azospirillum sp. SherDot2 | MPMX19_02138 | | Psp operon transcriptional activator | strong | 58 | 97 |
| o | Serratia liquefaciens MT49 | IAI46_13505 | | phage shock protein operon transcriptional activator | insig. | 54 | 99 |
| o | Shewanella sp. ANA-3 | Shewana3_2649 | | Fis family transcriptional regulator (RefSeq) | insig. | 50 | 99 |
| o | Rahnella sp. WP5 | EX31_RS15690 | | phage shock protein operon transcriptional activator | insig. | 51 | 100 |
| o | Shewanella amazonensis SB2B | Sama_1236 | | psp operon transcriptional activator (RefSeq) | strong | 50 | 99 |
| o | Pantoea sp. MT58 | IAI47_09390 | | phage shock protein operon transcriptional activator | strong | 52 | 99 |
| o | Erwinia tracheiphila HP pepo 2.2 | IJEDHG_23015 | pspF | phage shock protein operon transcriptional activator | cofit | 51 | 99 |
| o | Erwinia tracheiphila SCR3 | LU632_RS11565 | pspF | phage shock protein operon transcriptional activator | insig. | 51 | 99 |
| o | Shewanella oneidensis MR-1 | SO1806 | pspF | psp operon transcriptional activator (NCBI ptt file) | strong | 49 | 99 |
| o | Pectobacterium carotovorum WPP14 | HER17_RS09515 | | phage shock protein operon transcriptional activator | insig. | 50 | 100 |
| o | Pantoea agglomerans CFBP13505 P0401 | PagCFBP13505_RS06760 | | phage shock protein operon transcriptional activator | cofit | 53 | 98 |
| o | Dickeya dadantii 3937 | DDA3937_RS12430 | | phage shock protein operon transcriptional activator | insig. | 53 | 98 |
| o | Klebsiella pneumoniae MRSN742743 | KFA93_RS23775 | pspF;inference=COORDINATES | phage shock protein operon transcriptional activator | insig. | 51 | 99 |
| o | Escherichia fergusonii Becca | EFB2_02624 | | Psp operon transcriptional activator | insig. | 50 | 99 |
| o | Azospirillum brasilense Sp245 | AZOBR_RS02540 | | ATPase AAA | insig. | 55 | 97 |
| o | Klebsiella pneumoniae MKP103 | KDGMDA_19915 | | phage shock protein operon transcriptional activator | insig. | 51 | 99 |
| o | Klebsiella michiganensis M5al | BWI76_RS12445 | | phage shock protein operon transcriptional activator | insig. | 51 | 97 |
| o | Escherichia coli ECRC62 | BNILDI_18250 | pspF | phage shock protein operon transcriptional activator | insig. | 51 | 99 |
| o | Escherichia coli ECOR38 | HEPCGN_25785 | pspF | phage shock protein operon transcriptional activator | insig. | 50 | 99 |
| o | Escherichia coli ECOR27 | NOLOHH_20100 | pspF | phage shock protein operon transcriptional activator | sig. | 50 | 99 |
| o | Escherichia coli ECRC100 | OKFHMN_02415 | pspF | phage shock protein operon transcriptional activator | insig. | 50 | 99 |
| o | Escherichia coli ECRC101 | MCAODC_15855 | pspF | phage shock protein operon transcriptional activator | insig. | 50 | 99 |
| o | Escherichia coli ECRC102 | NIAGMN_26585 | pspF | phage shock protein operon transcriptional activator | no data | 50 | 99 |
| o | Escherichia coli ECRC98 | JDDGAC_04960 | pspF | phage shock protein operon transcriptional activator | insig. | 50 | 99 |
| o | Escherichia coli ECRC99 | KEDOAH_26360 | pspF | phage shock protein operon transcriptional activator | no data | 50 | 99 |
| o | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_02379 | | Psp operon transcriptional activator | insig. | 50 | 99 |
| o | Escherichia coli Nissle 1917 | ECOLIN_RS07845 | | phage shock protein operon transcriptional activator | no data | 50 | 99 |
| o | Escherichia coli BL21 | ECD_01280 | | psp operon transcriptional activator | no data | 50 | 99 |
| o | Escherichia coli BW25113 | b1303 | pspF | psp operon transcriptional activator (VIMSS) | strong | 50 | 99 |
| o | Dickeya dianthicola ME23 | DZA65_RS12950 | | phage shock protein operon transcriptional activator | insig. | 52 | 97 |
| o | Enterobacter sp. TBS_079 | MPMX20_02473 | | Psp operon transcriptional activator | insig. | 51 | 97 |
| o | Dickeya dianthicola 67-19 | HGI48_RS12500 | | phage shock protein operon transcriptional activator | insig. | 51 | 97 |
| o | Erwinia amylovora T8 | OLJFJH_13670 | | phage shock protein operon transcriptional activator | insig. | 51 | 99 |
| o | Enterobacter asburiae PDN3 | EX28DRAFT_0975 | | psp operon transcriptional activator PspF | insig. | 50 | 98 |
| o | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF2687 | | Psp operon transcriptional activator | cofit | 51 | 99 |
| o | Alteromonas macleodii MIT1002 | MIT1002_01142 | | Phage shock protein F | cofit | 50 | 99 |
| o | Rhodospirillum rubrum S1H | Rru_A1219 | | Sigma54 Specific Transcriptional Regulator containing PAS, and Fis DNA-binding domains (NCBI) | cofit | 50 | 100 |
| o | Vibrio cholerae E7946 ATCC 55056 | CSW01_08440 | | phage shock protein operon transcriptional activator | insig. | 49 | 97 |
| o | Desulfovibrio vulgaris Hildenborough JW710 | DVU2989 | pspF | psp operon transcriptional activator (TIGR) | insig. | 49 | 97 |
| o | Desulfovibrio vulgaris Miyazaki F | DvMF_1798 | | sigma54 specific transcriptional acivator, PspF, Fis family (RefSeq) | sig. | 44 | 97 |
| | Pseudomonas sp. RS175 | PFR28_01986 | | Phenol regulator MopR | insig. | 43 | 98 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS32695 | | Fis family transcriptional regulator | insig. | 44 | 99 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS12530 | | transcriptional regulator | insig. | 43 | 98 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS22915 | | Fis family transcriptional regulator | insig. | 54 | 68 |
| | Azospirillum brasilense Sp245 | AZOBR_RS29300 | | Fis family transcriptional regulator | insig. | 42 | 98 |
| | Azospirillum sp. SherDot2 | MPMX19_05290 | | Hydrogenase transcriptional regulatory protein hupR1 | insig. | 44 | 94 |
| | Variovorax sp. SCN45 | GFF3669 | | Two-component system response regulator protein | no data | 43 | 99 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU2114 | atoC | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | insig. | 42 | 99 |
| | Cellulophaga baltica 18 | M666_RS12540 | | sigma 54-interacting response regulator | insig. | 40 | 85 |
| | Shewanella sp. ANA-3 | Shewana3_0845 | | anaerobic nitric oxide reductase transcription regulator (RefSeq) | insig. | 42 | 91 |
| | Escherichia coli ECRC62 | BNILDI_11055 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 41 | 99 |
| | Ralstonia solanacearum GMI1000 | RS_RS18250 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 54 | 67 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF2210 | | Hydrogenase transcriptional regulatory protein HoxA | insig. | 43 | 95 |
| | Ralstonia solanacearum PSI07 | RPSI07_RS00800 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 43 | 98 |
| | Escherichia coli ECOR27 | NOLOHH_05465 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 44 | 95 |
| | Shewanella loihica PV-4 | Shew_0656 | | anaerobic nitric oxide reductase transcription regulator (RefSeq) | insig. | 41 | 99 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS23090 | | sigma-54-dependent response regulator transcription factor ZraR | insig. | 45 | 88 |
| | Pseudomonas sp. SVBP6 | COO64_RS11340 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 38 | 99 |
| | Escherichia coli BL21 | ECD_03881 | | fused DNA-binding response regulator in two-component regulatory system with ZraS: response regulator/sigma54 interaction protein | insig. | 46 | 88 |
| | Marinobacter adhaerens HP15 | HP15_4023 | | helix-turn-helix, Fis-type | insig. | 41 | 98 |
| | 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 | 88 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF4188 | | Response regulator of zinc sigma-54-dependent two-component system | insig. | 56 | 60 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_2748 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | insig. | 49 | 67 |
| | Escherichia fergusonii Becca | EFB2_04606 | | Transcriptional regulatory protein ZraR | insig. | 45 | 88 |
| | Escherichia coli ECOR38 | HEPCGN_11960 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 45 | 88 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF1930 | | Transcriptional regulatory protein zraR | insig. | 42 | 97 |
| | Pseudomonas sp. BP01 | JOY50_RS23015 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 41 | 99 |
| | Escherichia coli ECRC62 | BNILDI_06055 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 45 | 88 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_04045 | | Transcriptional regulatory protein ZraR | insig. | 43 | 95 |
| | Shewanella amazonensis SB2B | Sama_0727 | | anaerobic nitric oxide reductase transcription regulator (RefSeq) | insig. | 43 | 91 |
| | Escherichia coli ECOR27 | NOLOHH_12495 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 41 | 99 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_16945 | | transcriptional regulator | insig. | 40 | 99 |
| | Escherichia fergusonii Becca | EFB2_01215 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 40 | 99 |
| | Pseudomonas putida KT2440 | PP_0807 | | DNA-binding transcriptional dual regulator (NO) | insig. | 40 | 99 |
| | Escherichia coli ECOR38 | HEPCGN_19850 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 40 | 99 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS15110 | | nitric oxide reductase transcriptional regulator NorR | no data | 40 | 99 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS26155 | | nitric oxide reductase transcriptional regulator NorR | no data | 40 | 99 |
| | Klebsiella michiganensis M5al | BWI76_RS01605 | | transcriptional regulatory protein ZraR | insig. | 47 | 88 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU3220 | atoC | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | no data | 39 | 98 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_2149 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | strong | 51 | 67 |
| | Shewanella oneidensis MR-1 | SO3059 | | formate hydrogenlyase transcriptional activator, putative (NCBI ptt file) | insig. | 39 | 97 |
| | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS22395 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 53 | 67 |
| | Ralstonia solanacearum UW163 | UW163_RS22940 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 53 | 67 |
| | Pseudomonas segetis P6 | ACVTMO_RS08750 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 42 | 90 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01025 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 40 | 99 |
| | Rhodospirillum rubrum S1H | Rru_A1388 | | Transcriptional Regulator, NifA subfamily, Fis Family (NCBI) | cofit | 50 | 68 |
| | Shewanella sp. ANA-3 | Shewana3_1488 | | sigma-54 dependent trancsriptional regulator (RefSeq) | insig. | 47 | 68 |
| | Klebsiella michiganensis M5al | BWI76_RS22250 | | nitric oxide reductase transcription regulator | insig. | 43 | 92 |
| | Pseudomonas aeruginosa MRSN321 | DY961_RS03885 | norR;go_function=DNA-binding | nitric oxide reductase transcriptional regulator NorR | insig. | 42 | 95 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_13385 | | nitric oxide reductase transcriptional regulator NorR | sig. | 42 | 95 |
| | Pseudomonas aeruginosa PUPa3 | DQ20_RS34920 | norR;go_function=DNA-binding | nitric oxide reductase transcriptional regulator NorR | insig. | 42 | 95 |
| | Alteromonas macleodii MIT1002 | MIT1002_02086 | | Nif-specific regulatory protein | insig. | 39 | 97 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_0823 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | insig. | 51 | 67 |
| | Pseudomonas sp. DMC3 | GFF4030 | | Transcriptional regulatory protein ZraR | strong | 52 | 64 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_3010 | | sigma54 specific transcriptional regulator, Fis family (RefSeq) | strong | 48 | 83 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_03783 | | Transcriptional regulator containing GAF, AAA-type ATPase, and DNA binding domains | insig. | 39 | 97 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1260 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | insig. | 51 | 69 |
| | Sphingobium sp. HT1-2 | GFF1148 | | Nitrogen regulation protein NR(I), GlnG (=NtrC) | strong | 51 | 66 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU2359 | | sigma-54 dependent transcriptional regulator (TIGR) | insig. | 51 | 69 |
| | Klebsiella pneumoniae MRSN742743 | KFA93_RS24385 | zraR;go_function=sequence-specific | sigma-54-dependent response regulator transcription factor ZraR | insig. | 45 | 88 |
| | Escherichia coli BL21 | ECD_02559 | | anaerobic nitric oxide reductase DNA-binding transcriptional activator | insig. | 41 | 99 |
| | Escherichia coli BW25113 | b2709 | ygaA | putative 2-component transcriptional regulator (VIMSS) | insig. | 41 | 99 |
| | Escherichia coli ECRC100 | OKFHMN_20650 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 40 | 99 |
| | Escherichia coli ECRC101 | MCAODC_11175 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 40 | 99 |
| | Escherichia coli ECRC102 | NIAGMN_18420 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 40 | 99 |
| | Escherichia coli ECRC98 | JDDGAC_24315 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 40 | 99 |
| | Escherichia coli ECRC99 | KEDOAH_07485 | norR | nitric oxide reductase transcriptional regulator NorR | no data | 40 | 99 |
| | Pseudomonas sp. DMC3 | GFF2762 | | Phenol regulator MopR | cofit | 40 | 99 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_15435 | | transcriptional regulator | insig. | 39 | 99 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_926 | | Functional role page for Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 38 | 99 |
| | Pseudomonas segetis P6 | ACVTMO_RS06070 | | sigma-54-dependent transcriptional regulator | no data | 50 | 69 |
| | Escherichia coli ECRC101 | MCAODC_03820 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 45 | 88 |
| | Escherichia coli ECRC102 | NIAGMN_11070 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 45 | 88 |
| | Escherichia coli ECRC99 | KEDOAH_14840 | zraR | sigma-54-dependent response regulator transcription factor ZraR | no data | 45 | 88 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS10015 | | sigma-54 dependent transcriptional regulator | sig. | 39 | 98 |
| | Agrobacterium fabrum C58 | Atu3764 | | sigma 54 dependent transcriptional activator | sig. | 37 | 98 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_1372 | | sigma-54 dependent transcriptional regulator | insig. | 42 | 97 |
| | Pseudomonas sp. RS175 | PFR28_00239 | | Nitric oxide reductase transcription regulator NorR2 | insig. | 40 | 99 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_09510 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 48 | 67 |
| | Serratia liquefaciens MT49 | IAI46_07205 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 43 | 96 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS23170 | | ATPase AAA | insig. | 50 | 68 |
| | Variovorax sp. OAS795 | ABID97_RS13590 | | sigma-54 dependent transcriptional regulator | insig. | 43 | 95 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_02351 | | Phenol regulator MopR | cofit | 41 | 97 |
| | Klebsiella pneumoniae MKP103 | KDGMDA_02920 | | nitric oxide reductase transcriptional regulator NorR | sig. | 41 | 93 |
| | Erwinia amylovora T8 | OLJFJH_13990 | | AAA family ATPase | insig. | 42 | 96 |
| | Klebsiella pneumoniae MRSN742743 | KFA93_RS18890 | norR;go_function=DNA-binding | nitric oxide reductase transcriptional regulator NorR | sig. | 41 | 93 |
| | Klebsiella pneumoniae MKP103 | KDGMDA_10090 | | sigma-54-dependent response regulator transcription factor ZraR | insig. | 55 | 60 |
| | Enterobacter asburiae PDN3 | EX28DRAFT_2798 | | Transcriptional regulator containing GAF, AAA-type ATPase, and DNA binding domains | insig. | 42 | 93 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_1524 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 51 | 64 |
| | Escherichia coli ECRC62 | BNILDI_12310 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 49 | 67 |
| | Pseudomonas putida KT2440 | PP_4696 | | Nitrogen regulation protein NR(I) | strong | 50 | 67 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS01040 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 44 | 67 |
| | Escherichia coli BL21 | ECD_02383 | | hydrogenase-4 transcriptional activator | cofit | 49 | 67 |
| | Escherichia coli ECRC100 | OKFHMN_21850 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 49 | 67 |
| | Escherichia coli ECRC101 | MCAODC_12380 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 49 | 67 |
| | Escherichia coli ECRC102 | NIAGMN_19620 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 49 | 67 |
| | Escherichia coli ECRC98 | JDDGAC_25795 | hyfR | DNA-binding transcriptional regulator HyfR | insig. | 49 | 67 |
| | Escherichia coli ECRC99 | KEDOAH_06370 | hyfR | DNA-binding transcriptional regulator HyfR | no data | 49 | 67 |
| | Escherichia coli BW25113 | b2491 | hyfR | putative 2-component regulator, interaction with sigma 54 (VIMSS) | sig. | 49 | 67 |
| | Escherichia coli ECOR38 | HEPCGN_21015 | hyfR | DNA-binding transcriptional activator HyfR | insig. | 48 | 67 |
| | Pseudomonas sp. RS175 | PFR28_02218 | | Nitric oxide reductase transcription regulator NorR2 | sig. | 41 | 98 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_4939 | | Functional role page for Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 40 | 99 |
| | Escherichia fergusonii Becca | EFB2_01635 | | Regulatory protein AtoC | insig. | 39 | 98 |
| | Escherichia coli ECOR38 | HEPCGN_22430 | atoC | acetoacetate metabolism transcriptional regulator AtoC | insig. | 39 | 98 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS12965 | | acetoacetate metabolism transcriptional regulator AtoC | no data | 39 | 98 |
| | Pseudomonas sp. BP01 | JOY50_RS27675 | | sigma-54 dependent transcriptional regulator | cofit | 53 | 62 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01235 | | DNA-binding transcriptional activator HyfR | cofit | 49 | 67 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_717 | | Functional role page for Anaerobic nitric oxide reductase transcription regulator NorR | strong | 43 | 91 |
| | Azospirillum brasilense Sp245 | AZOBR_RS18445 | | chemotaxis protein CheY | insig. | 42 | 97 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS15700 | | nitric oxide reductase transcriptional regulator NorR | insig. | 41 | 99 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_0137 | | nitrogen regulation protein NR(I) | strong | 40 | 98 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_5314 | | Functional role page for Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 40 | 98 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF4703 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 39 | 99 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS12705 | | transcriptional regulator | insig. | 39 | 97 |
| | Bacteroides stercoris CC31F | HMPREF1181_RS03655 | | sigma-54-dependent Fis family transcriptional regulator | cofit | 47 | 67 |
| | Escherichia coli ECRC100 | OKFHMN_13320 | zraR | sigma-54-dependent response regulator transcription factor ZraR | cofit | 45 | 88 |
| | Variovorax sp. OAS795 | ABID97_RS27095 | | nitric oxide reductase transcriptional regulator NorR | no data | 43 | 90 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS11715 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 41 | 98 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS11715 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 41 | 98 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1993 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | sig. | 40 | 97 |
| | Castellaniella sp019104865 MT123 | ABCV34_RS05900 | | nitric oxide reductase transcriptional regulator NorR | cofit | 41 | 98 |
| | Pseudomonas simiae WCS417 | PS417_11085 | | ATPase AAA | insig. | 41 | 97 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_2735 | | Helix-turn-helix, Fis-type | insig. | 41 | 97 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_2735 | | Helix-turn-helix, Fis-type | insig. | 41 | 97 |
| | Paraburkholderia graminis OAS925 | ABIE53_004468 | | transcriptional regulator with GAF, ATPase, and Fis domain | insig. | 38 | 97 |
| | Escherichia coli BL21 | ECD_02147 | | fused response regulator of ato operon, in two-component system with AtoS: response regulator/sigma54 interaction protein | insig. | 38 | 98 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01490 | | Regulatory protein AtoC | insig. | 38 | 98 |
| | Escherichia coli BW25113 | b2220 | atoC | fused response regulator of ato operon, in two-component system with AtoS: response regulator/sigma54 interaction protein (NCBI) | insig. | 38 | 98 |
| | Escherichia coli ECRC98 | JDDGAC_16945 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 45 | 88 |
| | Azospirillum brasilense Sp245 | AZOBR_RS26990 | | Fis family transcriptional regulator | insig. | 42 | 98 |
| | Rahnella sp. WP5 | EX31_RS15395 | | nif-specific transcriptional activator NifA | insig. | 41 | 97 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS14515 | | sigma-54 dependent transcriptional regulator | insig. | 38 | 97 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_27970 | | Fis family transcriptional regulator | insig. | 40 | 97 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_14400 | | Fis family transcriptional regulator | strong | 51 | 64 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_28365 | | Fis family transcriptional regulator | sig. | 41 | 90 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_4389 | | Sigma-54 dependent transcriptional regulator | insig. | 40 | 97 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS25235 | | nitric oxide reductase transcriptional regulator NorR | insig. | 38 | 99 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS25235 | | nitric oxide reductase transcriptional regulator NorR | insig. | 38 | 99 |
| | Azospirillum sp. SherDot2 | MPMX19_04251 | | C4-dicarboxylate transport transcriptional regulatory protein DctD | insig. | 42 | 92 |
| | Rhodopseudomonas palustris CGA009 | TX73_007390 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 49 | 68 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_02520 | | Anaerobic nitric oxide reductase transcription regulator NorR | cofit | 41 | 98 |
| | Vibrio cholerae E7946 ATCC 55056 | CSW01_14900 | | regulatory protein LuxO | insig. | 39 | 91 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_16075 | | Fis family transcriptional regulator | strong | 51 | 64 |
| | Pseudomonas sp. RS175 | PFR28_03718 | | Transcriptional regulatory protein ZraR | strong | 51 | 64 |
| | Rhodopseudomonas palustris CGA009 | TX73_007055 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 39 | 99 |
| | Dickeya dianthicola 67-19 | HGI48_RS18785 | | nif-specific transcriptional activator NifA | insig. | 49 | 67 |
| | Dickeya dianthicola ME23 | DZA65_RS19920 | | nif-specific transcriptional activator NifA | insig. | 49 | 67 |
| | Pseudomonas sp. S08-1 | OH686_12120 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 42 | 99 |
| | Klebsiella michiganensis M5al | BWI76_RS22905 | | ATPase AAA | insig. | 54 | 60 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS25735 | | sigma-54-dependent Fis family transcriptional regulator | strong | 51 | 64 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS25735 | | sigma-54-dependent Fis family transcriptional regulator | strong | 51 | 64 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_04930 | | Transcriptional regulatory protein ZraR | cofit | 51 | 64 |
| | Pseudomonas orientalis W4I3 | QF045_RS26155 | | sigma-54 dependent transcriptional regulator | strong | 51 | 64 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_5156 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 51 | 64 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS15305 | | PEP-CTERM-box response regulator transcription factor | insig. | 41 | 98 |
| | Xanthobacter sp. DMC5 | GFF848 | | DNA-binding transcriptional regulator NtrC | no data | 40 | 98 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_16520 | | DNA-binding response regulator | insig. | 39 | 98 |
| | Methylophilus sp. DMC18 | GFF1988 | | Sigma54-dependent transcriptional activator SfnR | insig. | 39 | 96 |
| | Rhizobium sp. OAE497 | ABIE40_RS09090 | | nitrogen regulation protein NR(I) | strong | 39 | 99 |
| | Pseudomonas orientalis W4I3 | QF045_RS25670 | | nitric oxide reductase transcriptional regulator NorR | insig. | 37 | 99 |
| | Pseudomonas simiae WCS417 | PS417_23895 | | Fis family transcriptional regulator | no data | 51 | 64 |
| | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS09765 | | sigma-54 dependent transcriptional regulator | insig. | 48 | 68 |
| | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_0196 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | strong | 46 | 67 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_25140 | | transcriptional regulator | sig. | 42 | 91 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_1428 | | Alkanesulfonates-binding protein | insig. | 40 | 90 |
| | Pseudomonas simiae WCS417 | PS417_23405 | | transcriptional regulator | insig. | 38 | 99 |
| | Bacteroides thetaiotaomicron VPI-5482 | BT1469 | | two-component system response regulator (NCBI ptt file) | sig. | 38 | 83 |
| | Enterobacter sp. TBS_079 | MPMX20_03593 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 51 | 62 |
| | Escherichia coli ECOR27 | NOLOHH_13500 | | Fis family transcriptional regulator | insig. | 49 | 65 |
| | Pantoea agglomerans CFBP13505 P0401 | PagCFBP13505_RS12345 | | sigma-54-dependent Fis family transcriptional regulator | cofit | 42 | 90 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_1806 | | Nitrogen regulation protein NR(I) | strong | 41 | 91 |
| | Pseudomonas sp. DMC3 | GFF5041 | | C4-dicarboxylate transport transcriptional regulatory protein DctD | cofit | 41 | 91 |
| | Pseudomonas sp. SVBP6 | COO64_RS21290 | | sigma-54 dependent transcriptional regulator | insig. | 40 | 93 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_29210 | | AAA family ATPase | insig. | 40 | 97 |
| | Pseudomonas sp. DMC3 | GFF4398 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 37 | 99 |
| | Pseudomonas sp. S08-1 | OH686_17260 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 49 | 69 |
| | Pseudomonas sp. BP01 | JOY50_RS00695 | | sigma-54 dependent transcriptional regulator | insig. | 40 | 93 |
| | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_2422 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | strong | 38 | 98 |
| | Sphingobium sp. HT1-2 | GFF2313 | | Two-component system response regulator protein | insig. | 52 | 62 |
| | Ralstonia solanacearum PSI07 | RPSI07_RS14005 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 51 | 68 |
| | Dickeya dadantii 3937 | DDA3937_RS18805 | | nif-specific transcriptional activator NifA | insig. | 49 | 67 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0110 | ntrC | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | cofit | 39 | 98 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_2858 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 50 | 64 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS12650 | | sigma-54 dependent transcriptional regulator | insig. | 45 | 67 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_04828 | | Nitric oxide reductase transcription regulator NorR2 | insig. | 39 | 99 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1324 | | sigma54 specific transcriptional regulator, Fis family (RefSeq) | strong | 49 | 66 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU2894 | flrA | sigma-54 dependent transcriptional regulator (TIGR) | strong | 47 | 69 |
| | Shewanella amazonensis SB2B | Sama_2834 | | sigma-54 dependent transcriptional regulator/sensory box protein (RefSeq) | insig. | 45 | 71 |
| | Pseudomonas orientalis W4I3 | QF045_RS13490 | | sigma 54-interacting transcriptional regulator | insig. | 39 | 97 |
| | Rhodopseudomonas palustris CGA009 | TX73_024055 | | nif-specific transcriptional activator NifA | strong | 39 | 97 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_2200 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | no data | 38 | 98 |
| | Methylophilus sp. DMC18 | GFF1277 | | Regulatory protein AtoC | insig. | 38 | 99 |
| | Pseudomonas stutzeri RCH2 | Psest_0999 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | strong | 50 | 64 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS10100 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 49 | 66 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS10100 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 49 | 66 |
| | Acidovorax sp. GW101-3H11 | Ac3H11_3315 | | Functional role page for Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 39 | 99 |
| | Pseudomonas putida KT2440 | PP_4371 | | two component system AtoC DNA-binding transcriptional activator | strong | 40 | 93 |
| | Rhodospirillum rubrum S1H | Rru_A1385 | | Two Component, Sigma54 Specific, Transcriptional Regulator, Fis family (NCBI) | cofit | 41 | 96 |
| | Shewanella loihica PV-4 | Shew_2282 | | Fis family transcriptional regulator (RefSeq) | insig. | 40 | 92 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS19930 | | transcriptional regulator | insig. | 39 | 97 |
| | Agrobacterium fabrum C58 | Atu1446 | | two component response regulator | strong | 38 | 100 |
| | Pseudomonas orientalis W4I3 | QF045_RS12080 | | sigma-54 dependent transcriptional regulator | cofit | 49 | 66 |
| | Pseudomonas putida KT2440 | PP_2790 | | Sigma-54 dependent sensory box protein | strong | 47 | 67 |
| | Pseudomonas sp. S08-1 | OH686_12810 | | T6SS sigma-54-dependent regulator VasH | insig. | 42 | 98 |
| | Pseudomonas sp. S08-1 | OH686_06630 | | T6SS sigma-54-dependent regulator VasH | insig. | 41 | 90 |
| | Pseudomonas sp. BP01 | JOY50_RS26915 | | sigma-54-dependent Fis family transcriptional regulator | no data | 41 | 90 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_1790 | | Sigma-54 dependent transcriptional regulator | insig. | 40 | 97 |