| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Parabacteroides merdae CL09T00C40 | HMPREF1078_RS14565 | | sigma-54 dependent transcriptional regulator | no data | 100 | 100 |
| o | Bacteroides stercoris CC31F | HMPREF1181_RS05760 | | sigma-54-dependent Fis family transcriptional regulator | no data | 69 | 100 |
| o | Phocaeicola vulgatus CL09T03C04 | HMPREF1058_RS17080 | | sigma-54-dependent Fis family transcriptional regulator | strong | 69 | 100 |
| o | Phocaeicola dorei CL03T12C01 | ABI39_RS13000 | | sigma-54-dependent Fis family transcriptional regulator | strong | 69 | 100 |
| o | Bacteroides ovatus ATCC 8483 | BACOVA_05207 | | Sigma-54 interaction domain protein | no data | 68 | 100 |
| o | Bacteroides thetaiotaomicron VPI-5482 | BT4375 | | transcriptional regulator (NCBI ptt file) | no data | 68 | 100 |
| o | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_05310 | | sigma-54-dependent Fis family transcriptional regulator | no data | 60 | 100 |
| o | Cellulophaga baltica 18 | M666_RS02315 | | sigma-54 dependent transcriptional regulator | no data | 59 | 98 |
| o | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS18335 | | sigma-54-dependent Fis family transcriptional regulator | no data | 58 | 99 |
| o | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_2375 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | no data | 57 | 99 |
| o | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS21680 | | sigma-54-dependent Fis family transcriptional regulator | no data | 59 | 99 |
| | Rhodopseudomonas palustris CGA009 | TX73_007390 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 52 | 61 |
| | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.2800.1 | | Flagellar regulatory protein FleQ | sig. | 36 | 98 |
| | Shewanella oneidensis MR-1 | SO3689 | | sigma-54 dependent nitrogen response regulator (NCBI ptt file) | sig. | 38 | 97 |
| | Paraburkholderia graminis OAS925 | ABIE53_004468 | | transcriptional regulator with GAF, ATPase, and Fis domain | insig. | 53 | 59 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS19930 | | transcriptional regulator | insig. | 53 | 59 |
| | Rhodopseudomonas palustris CGA009 | TX73_007055 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 50 | 61 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_03783 | | Transcriptional regulator containing GAF, AAA-type ATPase, and DNA binding domains | insig. | 53 | 59 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS12705 | | transcriptional regulator | insig. | 52 | 59 |
| | Shewanella sp. ANA-3 | Shewana3_3257 | | two component, sigma54 specific, Fis family transcriptional regulator (RefSeq) | insig. | 37 | 97 |
| | Dyella japonica UNC79MFTsu3.2 | ABZR86_RS20155 | | sigma-54 dependent transcriptional regulator | insig. | 38 | 96 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS14515 | | sigma-54 dependent transcriptional regulator | insig. | 52 | 59 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS15090 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 38 | 96 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU2894 | flrA | sigma-54 dependent transcriptional regulator (TIGR) | strong | 49 | 59 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU1063 | flrC | transcriptional regulatory protein (TIGR) | strong | 39 | 96 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS13225 | | sigma-54-dependent Fis family transcriptional regulator | cofit | 38 | 96 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS13485 | | sigma-54-dependent Fis family transcriptional regulator | strong | 38 | 96 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_02735 | | Fis family transcriptional regulator | insig. | 38 | 96 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_1324 | | sigma54 specific transcriptional regulator, Fis family (RefSeq) | strong | 49 | 59 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_13385 | | nitric oxide reductase transcriptional regulator NorR | insig. | 51 | 58 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS24790 | | sigma-54 dependent transcriptional regulator | cofit | 50 | 62 |
| | Rhizobium sp. OAE497 | ABIE40_RS09090 | | nitrogen regulation protein NR(I) | strong | 48 | 65 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_1428 | | Alkanesulfonates-binding protein | insig. | 50 | 60 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS22915 | | Fis family transcriptional regulator | insig. | 38 | 95 |
| | Rhodanobacter sp000427505 FW510-R12 | LRK53_RS05540 | | sigma-54 dependent transcriptional regulator | insig. | 48 | 62 |
| | Rhodospirillum rubrum S1H | Rru_A1388 | | Transcriptional Regulator, NifA subfamily, Fis Family (NCBI) | cofit | 51 | 61 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS43250 | | sigma-54 dependent transcriptional regulator | insig. | 50 | 62 |
| | Marinobacter adhaerens HP15 | HP15_328 | | two component, sigma54 specific, transcriptional regulator, Fis family | strong | 50 | 62 |
| | Pseudomonas stutzeri RCH2 | Psest_0999 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | strong | 49 | 62 |
| | Azospirillum brasilense Sp245 | AZOBR_RS29300 | | Fis family transcriptional regulator | insig. | 49 | 60 |
| | Methylophilus sp. DMC18 | GFF2815 | | Regulatory protein AtoC | insig. | 38 | 96 |
| | Bosea sp. OAE506 | ABIE41_RS16785 | | nitrogen regulation protein NR(I) | insig. | 50 | 61 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_29980 | | two-component system response regulator CbrB | strong | 49 | 62 |
| | Phocaeicola vulgatus CL09T03C04 | HMPREF1058_RS04160 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 47 | 64 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS12650 | | sigma-54 dependent transcriptional regulator | insig. | 46 | 65 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS05575 | | Fis family transcriptional regulator | strong | 50 | 62 |
| | Dyella japonica UNC79MFTsu3.2 | ABZR86_RS04010 | | sigma-54 dependent transcriptional regulator | insig. | 46 | 61 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_3020 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | strong | 45 | 66 |
| | Agrobacterium fabrum C58 | Atu3764 | | sigma 54 dependent transcriptional activator | sig. | 36 | 100 |
| | Paraburkholderia graminis OAS925 | ABIE53_001365 | | DNA-binding NtrC family response regulator | strong | 49 | 62 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS19020 | | sigma-54 dependent transcriptional regulator | insig. | 51 | 59 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_00240 | | two component, sigma54 specific, transcriptional regulator, NtrC subfamily, Fis family | strong | 49 | 62 |
| | Rhodanobacter denitrificans MT42 | LRK55_RS04170 | | sigma-54 dependent transcriptional regulator | cofit | 48 | 62 |
| | Rhodanobacter denitrificans FW104-10B01 | LRK54_RS04395 | | sigma-54 dependent transcriptional regulator | cofit | 48 | 62 |
| | Parabacteroides merdae CL09T00C40 | HMPREF1078_RS14380 | | sigma-54 dependent transcriptional regulator | insig. | 47 | 62 |
| | Pseudomonas sp. S08-1 | OH686_17260 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 49 | 65 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_28365 | | Fis family transcriptional regulator | sig. | 49 | 60 |
| | Phocaeicola dorei CL03T12C01 | ABI39_RS17060 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 47 | 64 |
| | Shewanella amazonensis SB2B | Sama_2301 | | response regulator receiver protein (RefSeq) | strong | 38 | 98 |
| | Bacteroides stercoris CC31F | HMPREF1181_RS03655 | | sigma-54-dependent Fis family transcriptional regulator | cofit | 45 | 64 |
| | Rhodanobacter sp. FW510-T8 | OKGIIK_11280 | atoC | sigma-54-dependent Fis family transcriptional regulator | insig. | 48 | 62 |
| | Shewanella loihica PV-4 | Shew_0726 | | two component, sigma54 specific, Fis family transcriptional regulator (RefSeq) | insig. | 36 | 97 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS15700 | | nitric oxide reductase transcriptional regulator NorR | insig. | 50 | 57 |
| | Pseudomonas stutzeri RCH2 | Psest_1765 | | Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains | strong | 38 | 96 |
| | Ralstonia solanacearum PSI07 | RPSI07_RS00800 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 38 | 95 |
| | Sinorhizobium meliloti 1021 | SMc01043 | | nitrogen assimilation regulatory protein | strong | 47 | 64 |
| | Dickeya dianthicola 67-19 | HGI48_RS18785 | | nif-specific transcriptional activator NifA | insig. | 43 | 69 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_09510 | | sigma-54-dependent Fis family transcriptional regulator | sig. | 42 | 76 |
| | Dickeya dianthicola ME23 | DZA65_RS19920 | | nif-specific transcriptional activator NifA | insig. | 43 | 69 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_02112 | | Sigma54-dependent transcriptional activator SfnR | cofit | 46 | 68 |
| | Shewanella loihica PV-4 | Shew_1362 | | sigma-54 dependent trancsriptional regulator (RefSeq) | strong | 37 | 98 |
| | Sphingobium sp. HT1-2 | GFF1148 | | Nitrogen regulation protein NR(I), GlnG (=NtrC) | strong | 47 | 63 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS10100 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 46 | 68 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS10100 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 46 | 68 |
| | Pseudomonas sp. DMC3 | GFF4030 | | Transcriptional regulatory protein ZraR | strong | 46 | 67 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS12530 | | transcriptional regulator | insig. | 44 | 61 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_0831 | | Two-component response regulator CbrB | sig. | 50 | 62 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_0831 | | Two-component response regulator CbrB | no data | 50 | 62 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF5813 | | Functional role page for Anaerobic nitric oxide reductase transcription regulator NorR | no data | 51 | 58 |
| | Erwinia amylovora T8 | OLJFJH_13990 | | AAA family ATPase | insig. | 49 | 59 |
| | Klebsiella michiganensis M5al | BWI76_RS18890 | | nif-specific transcriptional activator NifA | sig. | 48 | 60 |
| | Dickeya dadantii 3937 | DDA3937_RS18805 | | nif-specific transcriptional activator NifA | insig. | 47 | 59 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU2934 | ntrX | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | no data | 47 | 60 |
| | Pseudomonas sp. BP01 | JOY50_RS27675 | | sigma-54 dependent transcriptional regulator | cofit | 46 | 66 |
| | Pseudomonas putida KT2440 | PP_2771 | | Sigma-54 dependent transcriptional regulator | insig. | 46 | 67 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_16945 | | transcriptional regulator | insig. | 42 | 75 |
| | Pseudomonas sp. BP01 | JOY50_RS05065 | sfnR | sigma54-dependent transcriptional activator SfnR | insig. | 49 | 60 |
| | Pseudomonas putida KT2440 | PP_4696 | | Nitrogen regulation protein NR(I) | strong | 48 | 64 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_16075 | | Fis family transcriptional regulator | strong | 45 | 69 |
| | Azospirillum brasilense Sp245 | AZOBR_RS14430 | | chemotaxis protein CheY | strong | 45 | 68 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_05045 | | transcriptional regulator FleQ | strong | 38 | 96 |
| | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS22395 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 49 | 59 |
| | Ralstonia solanacearum UW163 | UW163_RS22940 | | sigma-54-dependent Fis family transcriptional regulator | insig. | 49 | 59 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_5156 | | Two-component sensor CbrB: intrcellular carbon:nitrogen balance | strong | 47 | 66 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_0823 | | two component, sigma54 specific, transcriptional regulator, Fis family (RefSeq) | insig. | 50 | 59 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS19345 | | sigma-54 dependent transcriptional regulator | no data | 49 | 59 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU3220 | atoC | sigma-54 dependent transcriptional regulator/response regulator (TIGR) | no data | 48 | 60 |
| | Xanthobacter sp. DMC5 | GFF4834 | | Regulatory protein AtoC | insig. | 43 | 72 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_04163 | | Anaerobic nitric oxide reductase transcription regulator NorR | strong | 38 | 96 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS21795 | | sigma-54-dependent Fis family transcriptional regulator | strong | 49 | 58 |