| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF1011 | | Transcriptional regulatory protein levR | insig. | 100 | 100 |
| o | Klebsiella pneumoniae MKP103 | KDGMDA_12220 | | Fis family transcriptional regulator | insig. | 73 | 100 |
| o | Klebsiella michiganensis M5al | BWI76_RS03950 | | sigma-54 interacting domain-containing protein | insig. | 73 | 100 |
| | Klebsiella pneumoniae MKP103 | KDGMDA_15780 | | Membrane protein | insig. | 34 | 96 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF4475 | | NtrC family Transcriptional regulator, ATPase domain | insig. | 33 | 96 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF323 | | Transcriptional regulatory protein zraR | insig. | 30 | 96 |
| | Klebsiella michiganensis M5al | BWI76_RS00520 | | transcription regulator of PTS system | insig. | 45 | 36 |
| | Escherichia coli ECOR27 | NOLOHH_11190 | dagR | transcriptional regulator DagR | insig. | 43 | 36 |
| | Pseudomonas sp. RS175 | PFR28_00239 | | Nitric oxide reductase transcription regulator NorR2 | insig. | 31 | 35 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS19930 | | transcriptional regulator | insig. | 36 | 29 |
| | Paraburkholderia graminis OAS925 | ABIE53_004468 | | transcriptional regulator with GAF, ATPase, and Fis domain | insig. | 38 | 25 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS12705 | | transcriptional regulator | insig. | 38 | 25 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_03783 | | Transcriptional regulator containing GAF, AAA-type ATPase, and DNA binding domains | insig. | 38 | 25 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS14515 | | sigma-54 dependent transcriptional regulator | insig. | 35 | 29 |
| | Bacteroides thetaiotaomicron VPI-5482 | BT2433 | | two-component system response regulator (NCBI ptt file) | sig. | 36 | 26 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_04828 | | Nitric oxide reductase transcription regulator NorR2 | insig. | 35 | 30 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_5314 | | Functional role page for Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 34 | 32 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS25235 | | nitric oxide reductase transcriptional regulator NorR | insig. | 34 | 30 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS25235 | | nitric oxide reductase transcriptional regulator NorR | insig. | 34 | 30 |
| | Pseudomonas sp. DMC3 | GFF4398 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 36 | 28 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_16520 | | DNA-binding response regulator | insig. | 35 | 26 |
| | Pseudomonas stutzeri RCH2 | Psest_3932 | | nitrogen regulation protein NR(I) | strong | 36 | 25 |
| | Enterobacter asburiae PDN3 | EX28DRAFT_2798 | | Transcriptional regulator containing GAF, AAA-type ATPase, and DNA binding domains | insig. | 38 | 25 |
| | Pseudomonas orientalis W4I3 | QF045_RS26155 | | sigma-54 dependent transcriptional regulator | strong | 37 | 25 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_04930 | | Transcriptional regulatory protein ZraR | cofit | 37 | 25 |
| | Pseudomonas simiae WCS417 | PS417_23895 | | Fis family transcriptional regulator | no data | 37 | 25 |
| | Rhodopseudomonas palustris CGA009 | TX73_010880 | | sigma 54-interacting transcriptional regulator | insig. | 35 | 28 |
| | Escherichia coli ECRC100 | OKFHMN_20650 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 35 | 27 |
| | Escherichia coli ECRC101 | MCAODC_11175 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 35 | 27 |
| | Escherichia coli ECRC102 | NIAGMN_18420 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 35 | 27 |
| | Escherichia coli ECRC98 | JDDGAC_24315 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 35 | 27 |
| | Escherichia coli ECRC99 | KEDOAH_07485 | norR | nitric oxide reductase transcriptional regulator NorR | no data | 35 | 27 |
| | Dickeya dadantii 3937 | DDA3937_RS18805 | | nif-specific transcriptional activator NifA | insig. | 33 | 33 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_14400 | | Fis family transcriptional regulator | strong | 37 | 25 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_5156 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 34 | 32 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS25735 | | sigma-54-dependent Fis family transcriptional regulator | strong | 39 | 22 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS25735 | | sigma-54-dependent Fis family transcriptional regulator | strong | 39 | 22 |
| | Pseudomonas sp. RS175 | PFR28_03718 | | Transcriptional regulatory protein ZraR | strong | 39 | 22 |
| | Dechlorosoma suillum PS | Dsui_1397 | | response regulator with CheY-like receiver, AAA-type ATPase, and DNA-binding domains | cofit | 36 | 28 |
| | Escherichia coli BL21 | ECD_02559 | | anaerobic nitric oxide reductase DNA-binding transcriptional activator | insig. | 35 | 27 |
| | Escherichia coli BW25113 | b2709 | ygaA | putative 2-component transcriptional regulator (VIMSS) | insig. | 35 | 27 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS15110 | | nitric oxide reductase transcriptional regulator NorR | no data | 35 | 27 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS26155 | | nitric oxide reductase transcriptional regulator NorR | no data | 35 | 27 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_16075 | | Fis family transcriptional regulator | strong | 34 | 32 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_16945 | | transcriptional regulator | insig. | 31 | 35 |
| | Marinobacter adhaerens HP15 | HP15_328 | | two component, sigma54 specific, transcriptional regulator, Fis family | strong | 39 | 22 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS01040 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 33 | 27 |
| | Bacteroides thetaiotaomicron VPI-5482 | BT3801 | | rteB, two-component system response regulator (NCBI ptt file) | strong | 37 | 26 |
| | Pseudomonas simiae WCS417 | PS417_23405 | | transcriptional regulator | insig. | 36 | 28 |
| | Escherichia coli ECOR27 | NOLOHH_12495 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 35 | 27 |
| | Bacteroides ovatus ATCC 8483 | BACOVA_01571 | | Sigma-54 interaction domain protein | insig. | 34 | 26 |
| | Phocaeicola vulgatus CL09T03C04 | HMPREF1058_RS04160 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 32 | 25 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU3142 | | sigma-54 dependent transcriptional regulator (TIGR) | sig. | 37 | 27 |
| | Escherichia fergusonii Becca | EFB2_01215 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 35 | 27 |
| | Escherichia coli ECOR38 | HEPCGN_19850 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 35 | 27 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01025 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 35 | 27 |
| | Pseudomonas sp. SVBP6 | COO64_RS11340 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 34 | 30 |
| | Vibrio cholerae E7946 ATCC 55056 | CSW01_13865 | | nitrogen regulation protein NR(I) | insig. | 34 | 30 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF5269 | | Nitrogen regulation protein NR(I) | insig. | 31 | 32 |
| | Bacteroides ovatus ATCC 8483 | BACOVA_03647 | | Sigma-54 interaction domain protein | cofit | 39 | 23 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_926 | | Functional role page for Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 35 | 29 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS12650 | | sigma-54 dependent transcriptional regulator | insig. | 34 | 26 |
| | Escherichia coli ECRC62 | BNILDI_11055 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 34 | 27 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS17060 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 32 | 25 |
| | Pseudomonas sp. DMC3 | GFF4030 | | Transcriptional regulatory protein ZraR | strong | 37 | 26 |
| | Marinobacter adhaerens HP15 | HP15_1011 | | two component, sigma54 specific, transcriptional regulator, Fis family | insig. | 35 | 27 |
| | Pseudomonas sp. BP01 | JOY50_RS23015 | norR | nitric oxide reductase transcriptional regulator NorR | insig. | 33 | 29 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF4519 | | Functional role page for Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 30 | 36 |
| | Pseudomonas putida KT2440 | PP_0807 | | DNA-binding transcriptional dual regulator (NO) | insig. | 34 | 30 |
| | Pseudomonas aeruginosa MRSN321 | DY961_RS19980 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 36 | 25 |
| | Pseudomonas aeruginosa PUPa3 | DQ20_RS54075 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 36 | 25 |
| | Enterobacter sp. TBS_079 | MPMX20_03593 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 38 | 25 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_08010 | | transcriptional regulator | sig. | 36 | 25 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_1524 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 37 | 25 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_2858 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 37 | 25 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_4939 | | Functional role page for Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 35 | 28 |
| | Pseudomonas simiae WCS417 | PS417_11760 | | Fis family transcriptional regulator | insig. | 34 | 26 |
| | Azospirillum sp. SherDot2 | MPMX19_03559 | | Acetoin dehydrogenase operon transcriptional activator AcoR | insig. | 33 | 31 |
| | Bacteroides stercoris CC31F | HMPREF1181_RS03655 | | sigma-54-dependent Fis family transcriptional regulator | cofit | 32 | 28 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS32695 | | Fis family transcriptional regulator | insig. | 40 | 23 |
| | Pseudomonas putida KT2440 | PP_4696 | | Nitrogen regulation protein NR(I) | strong | 36 | 25 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_4149 | | psp operon transcriptional activator PspF | strong | 38 | 23 |
| | Pseudomonas sp. RS175 | PFR28_01986 | | Phenol regulator MopR | insig. | 38 | 23 |
| | Pseudomonas segetis P6 | MPMX49_01763 | | Nitric oxide reductase transcription regulator NorR2 | insig. | 36 | 27 |
| | Pectobacterium carotovorum WPP14 | HER17_RS21440 | | nitrogen regulation protein NR(I) | cofit | 36 | 30 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_02351 | | Phenol regulator MopR | cofit | 35 | 25 |
| | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_2422 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | strong | 35 | 27 |
| | Acinetobacter baumannii LAC-4 | RR41_RS12775 | | sigma-54 dependent transcriptional regulator | insig. | 34 | 28 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1692 | | PAS modulated sigma54 specific transcriptional regulator, Fis family (RefSeq) | sig. | 34 | 27 |
| | Dickeya dianthicola ME23 | DZA65_RS19920 | | nif-specific transcriptional activator NifA | insig. | 33 | 33 |
| | Klebsiella pneumoniae MKP103 | KDGMDA_02920 | | nitric oxide reductase transcriptional regulator NorR | sig. | 36 | 27 |
| | Pseudomonas sp. BP01 | JOY50_RS09450 | ntrC | nitrogen regulation protein NR(I) | cofit | 35 | 26 |
| | Escherichia coli BL21 | ECD_01280 | | psp operon transcriptional activator | no data | 40 | 23 |
| | Escherichia coli BW25113 | b1303 | pspF | psp operon transcriptional activator (VIMSS) | strong | 40 | 23 |
| | Pseudomonas segetis P6 | MPMX49_01224 | | Transcriptional regulatory protein ZraR | no data | 38 | 22 |
| | Escherichia coli ECRC62 | BNILDI_18250 | pspF | phage shock protein operon transcriptional activator | insig. | 37 | 24 |
| | Dickeya dianthicola ME23 | DZA65_RS04415 | | nitric oxide reductase transcriptional regulator NorR | insig. | 37 | 25 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1766 | | sigma54 specific transcriptional regulator with PAS/PAC sensor, Fis family (RefSeq) | sig. | 36 | 27 |
| | Pseudomonas sp. BP01 | JOY50_RS27675 | | sigma-54 dependent transcriptional regulator | cofit | 36 | 25 |
| | Pseudomonas putida KT2440 | PP_5048 | | two-component system DNA-binding transcriptional dual regulator GlnL/GlnG | strong | 35 | 26 |