| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Pseudomonas simiae WCS417 | PS417_24805 | | Fis family transcriptional regulator | strong | 100 | 100 |
| o | Pseudomonas fluorescens SBW25 | PFLU_RS26740 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 95 | 100 |
| o | Pseudomonas fluorescens SBW25-INTG | PFLU_RS26740 | | sigma-54-dependent Fis family transcriptional regulator | strong | 95 | 100 |
| o | Pseudomonas lactucae CFBP13502 | GEMAOFIL_05116 | | Acetoin catabolism regulatory protein | cofit | 87 | 100 |
| o | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_2675 | | Nitrogen regulation protein NR(I) | insig. | 85 | 99 |
| o | Pseudomonas fluorescens GW456-L13 | PfGW456L13_1343 | | Nitrogen regulation protein NR(I) | insig. | 84 | 99 |
| o | Pseudomonas fluorescens FW300-N2E3 | AO353_06555 | | Fis family transcriptional regulator | insig. | 84 | 99 |
| o | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_4981 | | Nitrogen regulation protein NR(I) | insig. | 84 | 99 |
| o | Pseudomonas fluorescens FW300-N2C3 | AO356_15230 | | Fis family transcriptional regulator | insig. | 84 | 99 |
| o | Pseudomonas sp. DMC3 | GFF3859 | | Acetoin catabolism regulatory protein | strong | 83 | 100 |
| o | Pseudomonas sp. RS175 | PFR28_03884 | | Acetoin catabolism regulatory protein | insig. | 83 | 99 |
| o | Pseudomonas protegens RBAN4 | FABNJH_27610 | acoR | Acetoin catabolism regulatory protein AcoR | insig. | 82 | 99 |
| o | Pseudomonas sp. SVBP6 | COO64_RS15690 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 79 | 100 |
| o | Pseudomonas putida KT2440 | PP_0546 | | sigma-54 dependent transcriptional regulator | sig. | 72 | 99 |
| o | Pseudomonas sp. BP01 | JOY50_RS23070 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 70 | 99 |
| o | Pseudomonas aeruginosa MRSN321 | DY961_RS12750 | eatR;inference=COORDINATES | sigma-54-dependent transcriptional regulator EatR | insig. | 72 | 99 |
| o | Pseudomonas aeruginosa PA14 | IKLFDK_20735 | | sigma-54-dependent transcriptional regulator EatR | insig. | 72 | 99 |
| o | Pseudomonas aeruginosa PUPa3 | DQ20_RS48080 | eatR;inference=COORDINATES | sigma-54-dependent transcriptional regulator EatR | insig. | 72 | 99 |
| o | Ralstonia solanacearum PSI07 | RPSI07_RS09460 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 64 | 99 |
| o | Pseudomonas stutzeri RCH2 | Psest_2888 | | Transcriptional activator of acetoin/glycerol metabolism | insig. | 61 | 99 |
| o | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS07820 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 64 | 99 |
| o | Ralstonia solanacearum GMI1000 | RS_RS15720 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 64 | 99 |
| | Pseudomonas sp. DMC3 | GFF1222 | | Acetoin catabolism regulatory protein | insig. | 57 | 99 |
| o | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.877.1 | | hypothetical protein | insig. | 47 | 95 |
| o | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_01307 | | Transcriptional regulator of acetoin/glycerol metabolism | insig. | 42 | 98 |
| o | Paraburkholderia graminis OAS925 | ABIE53_005506 | | transcriptional regulator of acetoin/glycerol metabolism | strong | 42 | 98 |
| | Pseudomonas protegens RBAN4 | FABNJH_11295 | | Acetoin catabolism regulatory protein | insig. | 47 | 95 |
| | Pseudomonas stutzeri RCH2 | Psest_1432 | | Transcriptional activator of acetoin/glycerol metabolism | insig. | 42 | 95 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_24870 | | Fis family transcriptional regulator | insig. | 47 | 95 |
| | Pseudomonas aeruginosa MRSN321 | DY961_RS28220 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 47 | 95 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_21355 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 47 | 95 |
| | Pseudomonas aeruginosa PUPa3 | DQ20_RS49065 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 47 | 95 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_663 | | Transcriptional activator of acetoin dehydrogenase operon AcoR | insig. | 47 | 95 |
| o | Paraburkholderia sabiae LMG 24235 | QEN71_RS32795 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 41 | 98 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_25170 | | Fis family transcriptional regulator | insig. | 46 | 96 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS34130 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 43 | 94 |
| | Pseudomonas sp. RS175 | PFR28_01767 | | Acetoin catabolism regulatory protein | insig. | 46 | 95 |
| | Variovorax sp. SCN45 | GFF3390 | | Transcriptional activator of acetoin dehydrogenase operon AcoR | insig. | 43 | 98 |
| o | Variovorax sp. OAS795 | ABID97_RS12605 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 42 | 97 |
| | Pseudomonas sp. SVBP6 | COO64_RS18355 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 46 | 95 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_02638 | | Acetoin catabolism regulatory protein | cofit | 44 | 95 |
| | Pseudomonas simiae WCS417 | PS417_11760 | | Fis family transcriptional regulator | insig. | 44 | 95 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS21715 | | ATPase AAA | insig. | 42 | 95 |
| | Pseudomonas putida KT2440 | PP_0557 | | Acetoin catabolism regulatory protein | strong | 45 | 95 |
| | Pseudomonas sp. BP01 | JOY50_RS23120 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 44 | 95 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_1750 | | Sigma-54 dependent transcriptional regulator | insig. | 43 | 95 |
| | Azospirillum sp. SherDot2 | MPMX19_01661 | | Acetoin catabolism regulatory protein | insig. | 40 | 97 |
| | Erwinia amylovora T8 | OLJFJH_12290 | | sigma-54-dependent Fis family transcriptional regulator | cofit | 41 | 99 |
| o | Agrobacterium fabrum C58 | Atu4741 | | transcriptional regulator | insig. | 40 | 99 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS14145 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 41 | 98 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS09410 | | hypothetical protein | insig. | 41 | 94 |
| o | Azospirillum brasilense Sp245 | AZOBR_RS04785 | | ATPase AAA | insig. | 40 | 98 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS29370 | | Fis family transcriptional regulator | insig. | 40 | 98 |
| o | Sinorhizobium meliloti 1021 | SM_b20102 | | acetoin catabolism regulatory protein | insig. | 39 | 99 |
| o | Dechlorosoma suillum PS | Dsui_1463 | | transcriptional activator of acetoin/glycerol metabolism | cofit | 42 | 95 |
| | Methylophilus sp. DMC18 | GFF2060 | | Acetoin catabolism regulatory protein | insig. | 41 | 94 |
| | Paraburkholderia graminis OAS925 | ABIE53_004383 | | transcriptional regulator of acetoin/glycerol metabolism | strong | 39 | 95 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_00325 | | GAF modulated sigma54 specific transcriptional regulator, Fis family | insig. | 39 | 95 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS30230 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 39 | 94 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS12445 | | sigma-54-dependent Fis family transcriptional regulator | cofit | 41 | 87 |
| | Rhodospirillum rubrum S1H | Rru_A0932 | | Sigma54 Specific Transcriptional Regulator containing GAF, and Fis DNA-binding domains (NCBI) | cofit | 38 | 94 |
| | Paraburkholderia graminis OAS925 | ABIE53_005725 | | transcriptional regulator of acetoin/glycerol metabolism | strong | 41 | 87 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_01211 | | Transcriptional regulator of acetoin/glycerol metabolism | insig. | 39 | 90 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS28085 | | Fis family transcriptional regulator | insig. | 40 | 90 |
| | Acidovorax sp. GW101-3H11 | Ac3H11_4391 | | Transcriptional activator of acetoin/glycerol metabolism | sig. | 40 | 97 |
| | Ralstonia sp. UNC404CL21Col | ABZR87_RS15930 | | sigma-54-dependent Fis family transcriptional regulator | strong | 37 | 96 |
| | Pseudomonas protegens RBAN4 | FABNJH_21345 | peaR | Sigma-54 dependent transcriptional activator PeaR | insig. | 42 | 86 |
| | Variovorax sp. OAS795 | ABID97_RS15005 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 38 | 90 |
| | Variovorax sp. SCN45 | GFF6444 | | no description | insig. | 40 | 96 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS11445 | | Fis family transcriptional regulator | sig. | 38 | 93 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_4007 | | sigma-54 dependent transcriptional regulator | insig. | 40 | 95 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS34270 | | Fis family transcriptional regulator | sig. | 38 | 96 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF5398 | | Nitrogen regulation protein NR(I) | strong | 37 | 90 |
| | Pseudomonas sp. DMC3 | GFF1493 | | Acetoin catabolism regulatory protein | cofit | 40 | 95 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_21605 | | Fis family transcriptional regulator | insig. | 40 | 95 |
| o | Xanthobacter sp. DMC5 | GFF2065 | | Acetoin catabolism regulatory protein | insig. | 39 | 95 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_175 | | sigma-54 dependent transcriptional regulator | insig. | 43 | 81 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_2611 | | sigma-54 dependent transcriptional regulator | insig. | 40 | 95 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_03531 | | Acetoin catabolism regulatory protein | insig. | 40 | 95 |
| | Pseudomonas sp. S08-1 | OH686_03705 | | sigma-54-dependent transcriptional regulator | insig. | 40 | 96 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_19490 | | Fis family transcriptional regulator | insig. | 43 | 80 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_102 | | sigma-54 dependent transcriptional regulator | insig. | 39 | 95 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS18275 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 40 | 95 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS18275 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 40 | 95 |
| | Pseudomonas sp. RS175 | PFR28_02793 | | Acetoin catabolism regulatory protein | insig. | 40 | 95 |
| | Pseudomonas sp. BP01 | JOY50_RS19610 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 41 | 94 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS09475 | | Fis family transcriptional regulator | sig. | 38 | 87 |
| | Pseudomonas sp. BP01 | JOY50_RS06355 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 36 | 98 |
| | Pseudomonas simiae WCS417 | PS417_16245 | | Fis family transcriptional regulator | insig. | 40 | 95 |
| | Pseudomonas sp. SVBP6 | COO64_RS03420 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 41 | 85 |
| | Pseudomonas putida KT2440 | PP_3467 | | Sigma-54 dependent transcriptional regulator | strong | 41 | 85 |
| | Pseudomonas segetis P6 | ACVTMO_RS11180 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 38 | 95 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_1736 | | Helix-turn-helix, Fis-type | insig. | 38 | 95 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_1736 | | Helix-turn-helix, Fis-type | insig. | 38 | 95 |
| | Pseudomonas orientalis W4I3 | QF045_RS17960 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 38 | 95 |
| o | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS06205 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 37 | 94 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_2355 | | sigma-54 dependent transcriptional regulator | insig. | 42 | 80 |
| o | Rhodopseudomonas palustris CGA009 | TX73_006200 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 38 | 94 |
| | Pseudomonas sp. BP01 | JOY50_RS25985 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 39 | 94 |
| | Shewanella oneidensis MR-1 | SO4479 | | sigma-54 dependent transcriptional regulator (NCBI ptt file) | insig. | 35 | 96 |
| | Marinobacter adhaerens HP15 | HP15_2165 | | sigma-54 dependent transcriptional regulator | insig. | 35 | 95 |
| | Shewanella loihica PV-4 | Shew_3573 | | Fis family GAF modulated sigma54 specific transcriptional regulator (RefSeq) | insig. | 35 | 87 |
| | Klebsiella michiganensis M5al | BWI76_RS21990 | | ATPase AAA | strong | 38 | 95 |
| | Pseudomonas sp. SVBP6 | COO64_RS19080 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 38 | 95 |
| | Pseudomonas putida KT2440 | PP_2259 | | putative sigma-54 dependent transcriptional regulator | insig. | 36 | 94 |
| | Shewanella sp. ANA-3 | Shewana3_0251 | | Fis family GAF modulated sigma54 specific transcriptional regulator (RefSeq) | cofit | 35 | 96 |
| | Serratia liquefaciens MT49 | IAI46_12320 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 36 | 94 |
| | Dinoroseobacter shibae DFL-12 | Dshi_4156 | | GAF modulated sigma54 specific transcriptional regulator, Fis family (RefSeq) | insig. | 33 | 98 |
| | Vibrio cholerae E7946 ATCC 55056 | CSW01_09115 | | sigma-54-dependent Fis family transcriptional regulator | cofit | 36 | 85 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS25420 | | Fis family transcriptional regulator | insig. | 35 | 95 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS28905 | | Fis family transcriptional regulator | cofit | 36 | 94 |
| | Klebsiella pneumoniae MKP103 | KDGMDA_02645 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 36 | 94 |
| | Klebsiella pneumoniae MRSN742743 | KFA93_RS19140 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 36 | 94 |
| | Shewanella amazonensis SB2B | Sama_3434 | | sigma-54 dependent transcriptional regulator (RefSeq) | cofit | 35 | 95 |
| | Castellaniella sp019104865 MT123 | ABCV34_RS02700 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 36 | 94 |
| | Pantoea sp. MT58 | IAI47_19790 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 33 | 97 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS19015 | | Fis family transcriptional regulator | insig. | 45 | 47 |
| | Serratia liquefaciens MT49 | IAI46_12235 | | sigma 54-interacting transcriptional regulator | insig. | 34 | 95 |
| | Azospirillum sp. SherDot2 | MPMX19_03559 | | Acetoin dehydrogenase operon transcriptional activator AcoR | insig. | 32 | 95 |
| | Xanthobacter sp. DMC5 | GFF247 | | Acetoin dehydrogenase operon transcriptional activator AcoR | insig. | 35 | 94 |
| | Klebsiella michiganensis M5al | BWI76_RS10230 | | AAA family ATPase | no data | 34 | 86 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_1790 | | Sigma-54 dependent transcriptional regulator | insig. | 35 | 81 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_02520 | | Anaerobic nitric oxide reductase transcription regulator NorR | cofit | 35 | 81 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS11715 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 34 | 81 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS11715 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 34 | 81 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_4389 | | Sigma-54 dependent transcriptional regulator | insig. | 35 | 81 |
| | Enterobacter asburiae PDN3 | EX28DRAFT_4350 | | nitrogen regulation protein NR(I) | insig. | 44 | 50 |
| | Enterobacter sp. TBS_079 | MPMX20_04597 | | DNA-binding transcriptional regulator NtrC | strong | 44 | 50 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS15995 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 36 | 63 |
| | Pseudomonas simiae WCS417 | PS417_11085 | | ATPase AAA | insig. | 34 | 81 |
| | Serratia liquefaciens MT49 | IAI46_24960 | | nitrogen regulation protein NR(I) | strong | 44 | 49 |
| | Dickeya dadantii 3937 | DDA3937_RS00125 | | nitrogen regulation protein NR(I) | cofit | 44 | 49 |
| | Klebsiella pneumoniae MKP103 | KDGMDA_09000 | | nitrogen regulation protein NR(I) | insig. | 44 | 50 |
| | Pseudomonas simiae WCS417 | PS417_15295 | | Fis family transcriptional regulator | insig. | 45 | 49 |
| | Escherichia fergusonii Becca | EFB2_01032 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 35 | 63 |
| | Escherichia coli ECOR38 | HEPCGN_18985 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | insig. | 35 | 63 |
| | Pectobacterium carotovorum WPP14 | HER17_RS21440 | | nitrogen regulation protein NR(I) | cofit | 44 | 49 |
| | Escherichia coli BL21 | ECD_03753 | | fused DNA-binding response regulator in two-component regulatory system with GlnL: response regulator/sigma54 interaction protein | insig. | 45 | 48 |
| | Escherichia coli ECOR27 | NOLOHH_06240 | glnG | nitrogen regulation protein NR(I) | insig. | 45 | 48 |
| | Escherichia coli ECRC100 | OKFHMN_14110 | glnG | nitrogen regulation protein NR(I) | insig. | 45 | 48 |
| | Escherichia coli ECRC101 | MCAODC_04610 | glnG | nitrogen regulation protein NR(I) | strong | 45 | 48 |
| | Escherichia coli ECRC102 | NIAGMN_11865 | glnG | nitrogen regulation protein NR(I) | insig. | 45 | 48 |
| | Escherichia coli ECRC62 | BNILDI_05290 | glnG | nitrogen regulation protein NR(I) | cofit | 45 | 48 |
| | Escherichia coli ECRC98 | JDDGAC_17735 | glnG | nitrogen regulation protein NR(I) | no data | 45 | 48 |
| | Escherichia coli ECRC99 | KEDOAH_14040 | glnG | nitrogen regulation protein NR(I) | no data | 45 | 48 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_04184 | | DNA-binding transcriptional regulator NtrC | sig. | 45 | 48 |
| | Escherichia coli BW25113 | b3868 | glnG | fused DNA-binding response regulator in two-component regulatory system with GlnL: response regulator/sigma54 interaction protein (NCBI) | strong | 45 | 48 |
| | Methylophilus sp. DMC18 | GFF2024 | | DNA-binding transcriptional regulator NtrC | strong | 44 | 48 |
| | Dickeya dianthicola 67-19 | HGI48_RS21235 | | nitrogen regulation protein NR(I) | strong | 44 | 49 |
| | Dickeya dianthicola ME23 | DZA65_RS22210 | | nitrogen regulation protein NR(I) | strong | 44 | 49 |
| | Marinobacter adhaerens HP15 | HP15_523 | | two component, sigma54 specific, transcriptional regulator, Fis family | strong | 40 | 48 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_29210 | | AAA family ATPase | insig. | 35 | 81 |
| | Klebsiella pneumoniae MRSN742743 | KFA93_RS22480 | glnG;go_function=sequence-specific | nitrogen regulation protein NR(I) | insig. | 44 | 50 |
| | Escherichia coli ECRC100 | OKFHMN_19695 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | cofit | 36 | 63 |
| | Escherichia coli ECRC101 | MCAODC_10220 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | insig. | 36 | 63 |
| | Escherichia coli ECRC102 | NIAGMN_17465 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | insig. | 36 | 63 |
| | Escherichia coli ECRC98 | JDDGAC_23340 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | insig. | 36 | 63 |
| | Escherichia coli ECRC99 | KEDOAH_08435 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | no data | 36 | 63 |
| | Escherichia coli ECOR38 | HEPCGN_12740 | glnG | nitrogen regulation protein NR(I) | insig. | 45 | 48 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS22295 | | nitrogen regulation protein NR(I) | strong | 44 | 48 |
| | Escherichia coli ECOR27 | NOLOHH_11625 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | insig. | 36 | 63 |
| | Escherichia coli ECRC62 | BNILDI_10150 | uacR | Putative uric acid sigma-54-dependent transcriptional regulator UacR | cofit | 36 | 63 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_00846 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 36 | 63 |
| | Escherichia coli BW25113 | b2869 | ygeV | predicted DNA-binding transcriptional regulator (NCBI) | insig. | 36 | 63 |
| | Klebsiella michiganensis M5al | BWI76_RS00385 | | nitrogen assimilation regulatory protein | strong | 45 | 50 |
| | Marinobacter adhaerens HP15 | HP15_1891 | | two component, sigma54 specific, transcriptional regulator, Fis family | insig. | 42 | 48 |
| | Pseudomonas sp. S08-1 | OH686_00830 | | Transcriptional regulator | cofit | 48 | 46 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF2220 | | Nitrogen regulation protein NR(I) | strong | 45 | 47 |
| | Pantoea sp. MT58 | IAI47_00450 | | nitrogen regulation protein NR(I) | strong | 44 | 50 |
| | Erwinia tracheiphila HP pepo 2.2 | IJEDHG_08285 | glnG | nitrogen regulation protein NR(I) | cofit | 42 | 50 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0118 | ntrC | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | insig. | 47 | 45 |
| | Escherichia fergusonii Becca | EFB2_04748 | | DNA-binding transcriptional regulator NtrC | strong | 44 | 48 |
| | Escherichia coli BL21 | ECD_02702 | | putative sigma-54-interacting transcriptional activator | insig. | 35 | 63 |
| | Pantoea agglomerans CFBP13505 P0401 | PagCFBP13516_RS00435 | glnG | nitrogen regulation protein NR(I) | strong | 44 | 50 |
| | Erwinia tracheiphila SCR3 | LU632_RS22135 | glnG | nitrogen regulation protein NR(I) | strong | 43 | 50 |
| | Alteromonas macleodii MIT1002 | MIT1002_03186 | | Nitrogen regulation protein NR(I) | strong | 44 | 47 |
| | Erwinia amylovora T8 | OLJFJH_05495 | | nitrogen regulation protein NR(I) | strong | 44 | 50 |
| | Phocaeicola vulgatus CL09T03C04 | HMPREF1058_RS04160 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 42 | 47 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1260 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | insig. | 46 | 45 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS17060 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 42 | 47 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1933 | | PAS modulated sigma54 specific transcriptional regulator, Fis family (RefSeq) | insig. | 41 | 47 |
| | Rahnella sp. WP5 | EX31_RS15880 | | nitrogen regulation protein NR(I) | strong | 44 | 49 |
| | Escherichia coli BL21 | ECD_02147 | | fused response regulator of ato operon, in two-component system with AtoS: response regulator/sigma54 interaction protein | insig. | 42 | 48 |
| | Escherichia fergusonii Becca | EFB2_01635 | | Regulatory protein AtoC | insig. | 42 | 48 |
| | Escherichia coli ECOR38 | HEPCGN_22430 | atoC | acetoacetate metabolism transcriptional regulator AtoC | insig. | 42 | 48 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01490 | | Regulatory protein AtoC | insig. | 42 | 48 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS12965 | | acetoacetate metabolism transcriptional regulator AtoC | no data | 42 | 48 |
| | Escherichia coli BW25113 | b2220 | atoC | fused response regulator of ato operon, in two-component system with AtoS: response regulator/sigma54 interaction protein (NCBI) | insig. | 42 | 48 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS04990 | | sigma-54 dependent transcriptional regulator | cofit | 41 | 47 |
| | Azospirillum sp. SherDot2 | MPMX19_03130 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 44 | 47 |
| | Pseudomonas sp. RS175 | PFR28_02055 | | Anaerobic nitric oxide reductase transcription regulator NorR | insig. | 33 | 95 |
| | Pseudomonas sp. SVBP6 | COO64_RS23875 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 41 | 59 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS05020 | | sigma-54 dependent transcriptional regulator | strong | 42 | 47 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_16225 | | Fis family transcriptional regulator | insig. | 40 | 47 |
| | Azospirillum sp. SherDot2 | MPMX19_05290 | | Hydrogenase transcriptional regulatory protein hupR1 | insig. | 40 | 50 |
| | Pseudomonas protegens RBAN4 | FABNJH_28375 | tyrR | Transcriptional regulatory protein TyrR | insig. | 46 | 46 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_2039 | | Sigma-54 dependent transcriptional regulator | sig. | 46 | 46 |
| | Alteromonas macleodii MIT1002 | MIT1002_03048 | | Transcriptional regulatory protein ZraR | insig. | 42 | 46 |
| | Pseudomonas protegens RBAN4 | FABNJH_24715 | | Sigma-54-dependent Fis family transcriptional regulator | insig. | 41 | 46 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVUA0057 | atoC | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | insig. | 41 | 48 |
| | Pseudomonas orientalis W4I3 | QF045_RS13490 | | sigma 54-interacting transcriptional regulator | insig. | 33 | 81 |
| | Shewanella loihica PV-4 | Shew_3561 | | nitrogen metabolism transcriptional regulator, NtrC, Fis family (RefSeq) | strong | 43 | 49 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_00410 | | Fis family transcriptional regulator | sig. | 45 | 46 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_01730 | atoC | sigma-54-dependent Fis family transcriptional regulator | cofit | 41 | 47 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS04800 | | sigma-54 dependent transcriptional regulator | strong | 42 | 47 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS05610 | | sigma-54-dependent Fis family transcriptional regulator | strong | 41 | 46 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS05610 | | sigma-54-dependent Fis family transcriptional regulator | strong | 41 | 46 |
| | Bacteroides stercoris CC31F | HMPREF1181_RS03655 | | sigma-54-dependent Fis family transcriptional regulator | cofit | 40 | 48 |
| | Vibrio cholerae E7946 ATCC 55056 | CSW01_13865 | | nitrogen regulation protein NR(I) | insig. | 43 | 47 |
| | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS15125 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 43 | 50 |
| | Ralstonia solanacearum UW163 | UW163_RS12595 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 43 | 50 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS17680 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 37 | 55 |
| | Ralstonia sp. UNC404CL21Col | ABZR87_RS10765 | | sigma-54 dependent transcriptional regulator | insig. | 43 | 50 |
| | Pseudomonas segetis P6 | ACVTMO_RS19460 | | sigma-54-dependent transcriptional regulator | cofit | 41 | 48 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU1419 | atoC | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | sig. | 47 | 45 |
| | Shewanella amazonensis SB2B | Sama_3427 | | response regulator receiver protein (RefSeq) | strong | 44 | 48 |
| | Pseudomonas segetis P6 | ACVTMO_RS03895 | | sigma-54 interaction domain-containing protein | insig. | 45 | 46 |
| | Azospirillum brasilense Sp245 | AZOBR_RS26990 | | Fis family transcriptional regulator | insig. | 43 | 47 |
| | Ralstonia solanacearum PSI07 | RPSI07_RS18245 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 43 | 50 |
| | Klebsiella michiganensis M5al | BWI76_RS17490 | | Fis family transcriptional regulator | insig. | 33 | 68 |
| | Pseudomonas segetis P6 | ACVTMO_RS00675 | | sigma-54 interaction domain-containing protein | insig. | 44 | 45 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF2210 | | Hydrogenase transcriptional regulatory protein HoxA | insig. | 43 | 50 |
| | Phocaeicola vulgatus CL09T03C04 | HMPREF1058_RS03345 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 37 | 55 |
| | Ralstonia solanacearum GMI1000 | RS_RS05945 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 43 | 50 |
| | Methylophilus sp. DMC18 | GFF2815 | | Regulatory protein AtoC | insig. | 41 | 50 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS11255 | | Fis family transcriptional regulator | strong | 39 | 54 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_01292 | | Regulatory protein AtoC | cofit | 40 | 46 |
| | Dechlorosoma suillum PS | Dsui_2360 | | response regulator with CheY-like receiver, AAA-type ATPase, and DNA-binding domains | cofit | 46 | 47 |
| | Marinobacter adhaerens HP15 | HP15_725 | | two component, sigma54 specific, transcriptional regulator, Fis family | strong | 42 | 48 |
| | Klebsiella pneumoniae MKP103 | KDGMDA_28370 | | two-component system response regulator QseF/GlrR | insig. | 45 | 48 |
| | Klebsiella pneumoniae MRSN742743 | KFA93_RS04790 | glrR;go_function=ATP | two-component system response regulator GlrR | sig. | 45 | 48 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS23990 | | sigma-54-dependent transcriptional regulator | insig. | 45 | 47 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS23990 | | sigma-54-dependent transcriptional regulator | sig. | 45 | 47 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_5631 | | Sigma-54 dependent transcriptional regulator | insig. | 44 | 46 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS15305 | | PEP-CTERM-box response regulator transcription factor | insig. | 44 | 49 |
| | Pseudomonas stutzeri RCH2 | Psest_1071 | | Transcriptional regulator containing PAS, AAA-type ATPase, and DNA-binding domains | strong | 41 | 52 |
| | Rhodopseudomonas palustris CGA009 | TX73_007055 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 40 | 48 |
| | Pseudomonas simiae WCS417 | PS417_22350 | | Fis family transcriptional regulator | insig. | 45 | 47 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS13155 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 43 | 52 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS13155 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 43 | 52 |
| | Pseudomonas simiae WCS417 | PS417_05525 | | Fis family transcriptional regulator | strong | 40 | 46 |
| | Parabacteroides merdae CL09T00C40 | HMPREF1078_RS05570 | | sigma-54 dependent transcriptional regulator | insig. | 38 | 56 |
| | Shewanella oneidensis MR-1 | SO4472 | ntrC | nitrogen regulation protein NR(I) (NCBI ptt file) | strong | 41 | 51 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_5122 | | Type IV fimbriae expression regulatory protein PilR | insig. | 39 | 51 |
| | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS09115 | | sigma-54 dependent transcriptional regulator | insig. | 41 | 45 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS31075 | | propionate catabolism operon regulatory protein PrpR | insig. | 37 | 62 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_18180 | | Fis family transcriptional regulator | sig. | 45 | 47 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_5560 | | Sigma-54 dependent transcriptional regulator/sensory box protein | insig. | 45 | 47 |
| | Pseudomonas sp. RS175 | PFR28_01397 | | Anaerobic nitric oxide reductase transcription regulator NorR | sig. | 44 | 46 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS37520 | | Fis family transcriptional regulator | sig. | 41 | 48 |