| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Azospirillum sp. SherDot2 | MPMX19_01114 | | Regulatory protein AtoC | no data | 100 | 100 |
| o | Azospirillum brasilense Sp245 | AZOBR_RS14440 | | ATPase AAA | no data | 94 | 100 |
| o | Magnetospirillum magneticum AMB-1 | AMB_RS11960 | | sigma-54-dependent Fis family transcriptional regulator | no data | 75 | 99 |
| o | Rhodospirillum rubrum S1H | Rru_A1680 | | Two Component, Sigma54 Specific, Transcriptional Regulator, Fis family (NCBI) | no data | 71 | 99 |
| o | Rhodopseudomonas palustris CGA009 | TX73_013430 | | sigma-54 dependent transcriptional regulator | no data | 62 | 98 |
| o | Bosea sp. OAE506 | ABIE41_RS16775 | | sigma-54 dependent transcriptional regulator | no data | 61 | 98 |
| o | Xanthobacter sp. DMC5 | GFF845 | | DNA-binding transcriptional regulator NtrC | no data | 64 | 98 |
| o | Sinorhizobium meliloti 1021 | SMc01045 | | nitrogen regulation protein | no data | 60 | 98 |
| o | Agrobacterium fabrum C58 | Atu1448 | | two component response regulator | no data | 60 | 98 |
| o | Rhizobium sp. OAE497 | ABIE40_RS09100 | | sigma-54 dependent transcriptional regulator | no data | 60 | 98 |
| o | Caulobacter crescentus NA1000 | CCNA_01817 | | nitrogen assimilation regulatory protein ntrX | strong | 63 | 98 |
| o | Caulobacter crescentus NA1000 Δfur | CCNA_01817 | | nitrogen assimilation regulatory protein ntrX | strong | 63 | 98 |
| o | Sphingobium sp. HT1-2 | GFF1146 | | NtrX | no data | 59 | 99 |
| o | Sphingomonas koreensis DSMZ 15582 | Ga0059261_0135 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | no data | 58 | 98 |
| o | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS04820 | | sigma-54 dependent transcriptional regulator | no data | 60 | 98 |
| o | Phaeobacter inhibens DSM 17395 | PGA1_c14810 | | nitrogen assimilation regulatory protein NtrX | no data | 55 | 98 |
| o | Dinoroseobacter shibae DFL-12 | Dshi_1572 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | no data | 55 | 98 |
| o | Desulfovibrio vulgaris Hildenborough JW710 | DVU2934 | ntrX | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | no data | 46 | 95 |
| o | Desulfovibrio vulgaris Miyazaki F | DvMF_1461 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | no data | 45 | 98 |
| o | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS09195 | | Fis family transcriptional regulator | strong | 39 | 98 |
| o | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS10015 | | sigma-54 dependent transcriptional regulator | sig. | 39 | 98 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_04380 | | response regulator | strong | 46 | 79 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU3220 | atoC | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | no data | 40 | 97 |
| | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_0196 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | strong | 45 | 79 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_2200 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | no data | 42 | 82 |
| | Cellulophaga baltica 18 | M666_RS19210 | | sigma-54 dependent transcriptional regulator | insig. | 42 | 79 |
| | Pseudomonas stutzeri RCH2 | Psest_4267 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | strong | 41 | 98 |
| | Escherichia coli BL21 | ECD_02147 | | fused response regulator of ato operon, in two-component system with AtoS: response regulator/sigma54 interaction protein | insig. | 38 | 97 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_01490 | | Regulatory protein AtoC | insig. | 38 | 97 |
| | 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 | 97 |
| | Escherichia coli ECOR38 | HEPCGN_22430 | atoC | acetoacetate metabolism transcriptional regulator AtoC | insig. | 38 | 97 |
| | Escherichia fergusonii Becca | EFB2_01635 | | Regulatory protein AtoC | insig. | 38 | 97 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS12965 | | acetoacetate metabolism transcriptional regulator AtoC | no data | 38 | 97 |
| | Pseudomonas putida KT2440 | PP_1066 | | C4-dicarboxylate transport transcriptional regulatory protein | strong | 40 | 97 |
| | Pseudomonas segetis P6 | MPMX49_00215 | | C4-dicarboxylate transport transcriptional regulatory protein DctD | insig. | 38 | 99 |
| | Pseudomonas sp. BP01 | JOY50_RS14825 | | sigma-54 dependent transcriptional regulator | insig. | 40 | 97 |
| | Pseudomonas sp. S08-1 | OH686_13325 | | Two component, Sigma-54 Specific, central transcriptional regulator of acidic amino acid uptake | cofit | 41 | 97 |
| | Pseudomonas aeruginosa MRSN321 | DY961_RS11680 | dctD;inference=COORDINATES | two-component system response regulator DctD | strong | 40 | 98 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_27655 | | two-component system response regulator DctD | strong | 40 | 98 |
| | Pseudomonas aeruginosa PUPa3 | DQ20_RS50420 | dctD;inference=COORDINATES | two-component system response regulator DctD | strong | 40 | 98 |
| | Pseudomonas sp. SVBP6 | COO64_RS16760 | | sigma-54 dependent transcriptional regulator | insig. | 41 | 97 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_16265 | | Fis family transcriptional regulator | strong | 40 | 97 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_776 | | Two component, Sigma-54 Specific, central transcriptional regulator of acidic amino acid uptake | insig. | 40 | 97 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_11860 | | Fis family transcriptional regulator | strong | 39 | 97 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS03980 | | Fis family transcriptional regulator | strong | 39 | 96 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_3883 | | C4-dicarboxylate transport transcriptional regulatory protein | strong | 39 | 97 |
| | Pseudomonas aeruginosa MRSN321 | DY961_RS25855 | | sigma-54 dependent transcriptional regulator | strong | 40 | 98 |
| | Pseudomonas aeruginosa PUPa3 | DQ20_RS58285 | | sigma-54 dependent transcriptional regulator | strong | 40 | 98 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_1666 | | C4-dicarboxylate transport transcriptional regulatory protein | sig. | 38 | 98 |
| | Pseudomonas sp. DMC3 | GFF5115 | | C4-dicarboxylate transport transcriptional regulatory protein DctD | insig. | 40 | 97 |
| | Pseudomonas stutzeri RCH2 | Psest_4132 | | alpha-ketoglutarate DNA-binding response regulator (mifR) (from data) | strong | 39 | 98 |
| | Dechlorosoma suillum PS | Dsui_2360 | | response regulator with CheY-like receiver, AAA-type ATPase, and DNA-binding domains | cofit | 39 | 96 |
| | Pseudomonas orientalis W4I3 | QF045_RS04425 | | sigma-54 dependent transcriptional regulator | cofit | 38 | 98 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_25855 | | DNA-binding response regulator | sig. | 39 | 98 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS01400 | | sigma-54-dependent Fis family transcriptional regulator | strong | 39 | 97 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS01400 | | sigma-54-dependent Fis family transcriptional regulator | strong | 39 | 97 |
| | Pseudomonas sp. S08-1 | OH686_14355 | | C4-dicarboxylate transport transcriptional regulatory protein | strong | 39 | 97 |
| | Pseudomonas orientalis W4I3 | QF045_RS08460 | | sigma-54 dependent transcriptional regulator | cofit | 39 | 97 |
| | Pseudomonas sp. SVBP6 | COO64_RS00595 | | sigma-54 dependent transcriptional regulator | insig. | 39 | 97 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS01705 | | Fis family transcriptional regulator | insig. | 40 | 97 |
| | Ralstonia sp. UNC404CL21Col | ABZR87_RS16305 | | sigma-54 dependent transcriptional regulator | insig. | 38 | 97 |
| | Acinetobacter radioresistens SK82 | MPMX26_01292 | | DNA-binding transcriptional regulator NtrC | strong | 35 | 97 |
| | Pseudomonas simiae WCS417 | PS417_22645 | | C4-dicarboxylate ABC transporter | sig. | 39 | 98 |
| | Marinobacter adhaerens HP15 | HP15_425 | | two-component response regulator NtrC | strong | 37 | 98 |
| | Pseudomonas putida KT2440 | PP_0263 | | C4-dicarboxylate transport transcriptional regulatory protein | strong | 39 | 97 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_10065 | | Fis family transcriptional regulator | strong | 38 | 97 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF2220 | | Nitrogen regulation protein NR(I) | strong | 37 | 97 |
| | Pseudomonas simiae WCS417 | PS417_01305 | | Fis family transcriptional regulator | sig. | 39 | 97 |
| | Pseudomonas sp. RS175 | PFR28_04889 | | C4-dicarboxylate transport transcriptional regulatory protein DctD | strong | 38 | 97 |
| | Pseudomonas sp. BP01 | JOY50_RS14530 | | sigma-54 dependent transcriptional regulator | insig. | 38 | 98 |
| | Klebsiella pneumoniae MKP103 | KDGMDA_09000 | | nitrogen regulation protein NR(I) | insig. | 36 | 96 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_4775 | | Two component, Sigma-54 Specific, central transcriptional regulator of acidic amino acid uptake | strong | 40 | 97 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_18205 | | Fis family transcriptional regulator | insig. | 39 | 98 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1993 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | sig. | 38 | 97 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_00486 | | C4-dicarboxylate transport transcriptional regulatory protein DctD | cofit | 39 | 97 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_04682 | | C4-dicarboxylate transport transcriptional regulatory protein DctD | cofit | 38 | 98 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_0823 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | insig. | 38 | 96 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0110 | ntrC | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | cofit | 39 | 97 |
| | Ralstonia solanacearum GMI1000 | RS_RS01635 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 39 | 97 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS24280 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 38 | 98 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS24280 | | sigma-54-dependent Fis family transcriptional regulator | strong | 38 | 98 |
| | Pseudomonas orientalis W4I3 | QF045_RS24815 | | sigma-54 dependent transcriptional regulator | insig. | 38 | 98 |
| | Dickeya dadantii 3937 | DDA3937_RS00125 | | nitrogen regulation protein NR(I) | cofit | 37 | 97 |
| | Escherichia fergusonii Becca | EFB2_04748 | | DNA-binding transcriptional regulator NtrC | strong | 36 | 97 |
| | Marinobacter adhaerens HP15 | HP15_2011 | | two component, sigma54 specific, transcriptional regulator, Fis family | insig. | 41 | 83 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS23090 | | sigma-54-dependent response regulator transcription factor ZraR | insig. | 39 | 97 |
| | Pseudomonas aeruginosa MRSN321 | DY961_RS19025 | | sigma-54 dependent transcriptional regulator | strong | 39 | 97 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_06350 | | Fis family transcriptional regulator | strong | 39 | 97 |
| | Pseudomonas aeruginosa PUPa3 | DQ20_RS53150 | | sigma-54 dependent transcriptional regulator | strong | 39 | 97 |
| | Pseudomonas sp. DMC3 | GFF4159 | | C4-dicarboxylate transport transcriptional regulatory protein DctD | insig. | 39 | 97 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS01685 | | nitrogen regulation protein NR(I) | sig. | 35 | 97 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS01685 | | nitrogen regulation protein NR(I) | strong | 35 | 97 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_01294 | | C4-dicarboxylate transport transcriptional regulatory protein DctD | strong | 39 | 97 |
| | Dickeya dianthicola 67-19 | HGI48_RS21235 | | nitrogen regulation protein NR(I) | strong | 36 | 97 |
| | Dickeya dianthicola ME23 | DZA65_RS22210 | | nitrogen regulation protein NR(I) | strong | 36 | 97 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_00547 | | DNA-binding transcriptional regulator NtrC | insig. | 35 | 97 |
| | Pseudomonas simiae WCS417 | PS417_01635 | | nitrogen regulation protein NR(I) | strong | 35 | 97 |
| | Escherichia coli ECOR27 | NOLOHH_05465 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 39 | 97 |
| | Escherichia coli ECOR38 | HEPCGN_11960 | zraR | sigma-54-dependent response regulator transcription factor ZraR | insig. | 39 | 97 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_401 | | C4-dicarboxylate transport transcriptional regulatory protein | strong | 38 | 98 |