| Organism | Ratio1 | Gene1 | Name1 | Description1 | Ratio2 | Gene2 | Name2 | Description2 | Cofit | Rank |
| Vibrio cholerae E7946 ATCC 55056 | 1.0 | CSW01_03550 | | transcriptional activator protein NhaR | 1.0 | CSW01_06100 | | histidine utilization repressor | 0.49 | 14 |
| Serratia liquefaciens MT49 | 0.68 | IAI46_03090 | | transcriptional activator NhaR | 0.44 | IAI46_10615 | | histidine utilization repressor | low | > 87 |
| Enterobacter sp. TBS_079 | 0.66 | MPMX20_00723 | | Transcriptional activator protein NhaR | 0.43 | MPMX20_01398 | | HTH-type transcriptional repressor NagR | low | > 85 |
| Pectobacterium carotovorum WPP14 | 0.66 | HER17_RS02855 | | transcriptional activator NhaR | 0.13 | HER17_RS13540 | | GntR family transcriptional regulator | low | > 75 |
| Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | 0.66 | GFF1120 | | Transcriptional activator NhaR | 0.38 | GFF665 | | Histidine utilization repressor | low | > 78 |
| Dickeya dadantii 3937 | 0.66 | DDA3937_RS18355 | | transcriptional activator NhaR | 0.48 | DDA3937_RS15020 | | histidine utilization repressor | — | — |
| Enterobacter asburiae PDN3 | 0.66 | EX28DRAFT_3629 | | Transcriptional regulator | 0.41 | EX28DRAFT_2221 | | histidine utilization repressor, proteobacterial | low | > 76 |
| Klebsiella michiganensis M5al | 0.66 | BWI76_RS04320 | | transcriptional activator NhaR | 0.41 | BWI76_RS08730 | | histidine utilization repressor | low | > 92 |
| Rahnella sp. WP5 | 0.65 | EX31_RS03885 | | transcriptional activator NhaR | 0.44 | EX31_RS06725 | | histidine utilization repressor | low | > 89 |
| Klebsiella pneumoniae MKP103 | 0.65 | KDGMDA_12590 | | transcriptional activator NhaR | 0.40 | KDGMDA_16995 | | histidine utilization repressor | low | > 95 |
| Escherichia coli BW25113 | 0.64 | b0020 | nhaR | DNA-binding transcriptional activator (NCBI) | 0.17 | b3375 | yhfR | putative transcriptional regulator (VIMSS) | low | > 76 |
| Escherichia coli BL21 | 0.64 | ECD_00019 | | transcriptional activator of nhaA | 0.17 | ECD_03225 | | putative DNA-binding transcriptional regulator | low | > 61 |
| Escherichia coli HS(pFamp)R (ATCC 700891) | 0.64 | OHPLBJKB_03641 | | Transcriptional activator protein NhaR | 0.17 | OHPLBJKB_00328 | | putative fructoselysine utilization operon transcriptional repressor | low | > 74 |
| Escherichia coli ECRC98 | 0.64 | JDDGAC_14620 | nhaR | transcriptional activator NhaR | 0.18 | JDDGAC_20775 | phoB | transcriptional regulator PhoB | low | > 87 |
| Escherichia coli ECRC100 | 0.64 | OKFHMN_11025 | nhaR | transcriptional activator NhaR | 0.18 | OKFHMN_17145 | phoB | transcriptional regulator PhoB | low | > 79 |
| Escherichia coli ECRC99 | 0.64 | KEDOAH_17130 | nhaR | transcriptional activator NhaR | 0.18 | KEDOAH_10995 | phoB | transcriptional regulator PhoB | — | — |
| Escherichia coli ECRC102 | 0.64 | NIAGMN_08875 | nhaR | transcriptional activator NhaR | 0.18 | NIAGMN_14915 | phoB | transcriptional regulator PhoB | low | > 80 |
| Escherichia coli ECRC101 | 0.64 | MCAODC_01540 | nhaR | transcriptional activator NhaR | 0.18 | MCAODC_07675 | phoB | transcriptional regulator PhoB | low | > 87 |
| Pantoea sp. MT58 | 0.62 | IAI47_16160 | | transcriptional activator NhaR | 0.42 | IAI47_13270 | | histidine utilization repressor | low | > 76 |
| Pantoea agglomerans CFBP13505 P0401 | 0.61 | PagCFBP13505_RS12835 | | transcriptional activator NhaR | 0.42 | PagCFBP13505_RS04050 | | histidine utilization repressor | low | > 74 |
| Shewanella loihica PV-4 | 0.60 | Shew_1044 | nhaR | transcriptional activator NhaR (RefSeq) | 0.42 | Shew_3758 | | histidine utilization repressor (RefSeq) | low | > 60 |
| Shewanella oneidensis MR-1 | 0.59 | SO1338 | nhaR | transcriptional activator protein NhaR (NCBI ptt file) | 0.44 | SO0096 | hutC | histidine utilization repressor (NCBI ptt file) | low | > 76 |
| Shewanella sp. ANA-3 | 0.59 | Shewana3_3036 | nhaR | transcriptional activator NhaR (RefSeq) | 0.45 | Shewana3_0099 | | histidine utilization repressor (RefSeq) | low | > 73 |
| Shewanella amazonensis SB2B | 0.57 | Sama_0870 | nhaR | transcriptional activator NhaR (RefSeq) | 0.43 | Sama_0081 | | histidine utilization repressor (RefSeq) | low | > 62 |
| Pseudomonas syringae pv. syringae B728a | 0.36 | Psyr_2422 | | transcriptional regulator, LysR family | 0.44 | Psyr_0366 | | transcriptional regulator, GntR family | low | > 86 |
| Pseudomonas syringae pv. syringae B728a ΔmexB | 0.36 | Psyr_2422 | | transcriptional regulator, LysR family | 0.44 | Psyr_0366 | | transcriptional regulator, GntR family | low | > 86 |
| Pseudomonas sp. BP01 | 0.36 | JOY50_RS04150 | nhaR | transcriptional activator NhaR | 0.43 | JOY50_RS09510 | hutC | histidine utilization repressor | low | > 84 |
| Pseudomonas putida KT2440 | 0.35 | PP_2444 | | Transcriptional regulator, LysR family | 0.43 | PP_5035 | | Histidine utilization repressor | low | > 96 |
| Pseudomonas sp. SVBP6 | 0.35 | COO64_RS10260 | nhaR | transcriptional activator NhaR | 0.42 | COO64_RS13400 | hutC | histidine utilization repressor | low | > 93 |
| Pseudomonas fluorescens FW300-N1B4 | 0.35 | Pf1N1B4_3936 | | Transcriptional regulator, LysR family | 0.44 | Pf1N1B4_1590 | | Histidine utilization repressor | low | > 87 |
| Pseudomonas sp. DMC3 | 0.35 | GFF1433 | | Transcriptional activator protein NhaR | 0.43 | GFF4064 | | HTH-type transcriptional repressor NagR | low | > 89 |
| Pseudomonas lactucae CFBP13502 | 0.34 | GEMAOFIL_02178 | | Transcriptional activator protein NhaR | 0.44 | GEMAOFIL_00565 | | HTH-type transcriptional repressor NagR | low | > 96 |
| Pseudomonas simiae WCS417 | 0.34 | PS417_10445 | | LysR family transcriptional regulator | 0.44 | PS417_01710 | | histidine utilization repressor | low | > 88 |
| Pseudomonas fluorescens FW300-N2E3 | 0.34 | AO353_20115 | | LysR family transcriptional regulator | 0.44 | AO353_12240 | | histidine utilization repressor | low | > 101 |
| Pseudomonas orientalis W4I3 | 0.34 | QF045_RS12425 | | transcriptional activator NhaR | 0.44 | QF045_RS04775 | | histidine utilization repressor | low | > 93 |
| Pseudomonas fluorescens GW456-L13 | 0.34 | PfGW456L13_2543 | | Transcriptional regulator, LysR family | 0.44 | PfGW456L13_329 | | Histidine utilization repressor | — | — |
| Pseudomonas fluorescens SBW25 | 0.34 | PFLU_RS10530 | | transcriptional activator NhaR | 0.44 | PFLU_RS01765 | | histidine utilization repressor | low | > 109 |
| Pseudomonas fluorescens SBW25-INTG | 0.34 | PFLU_RS10530 | | transcriptional activator NhaR | 0.44 | PFLU_RS01765 | | histidine utilization repressor | low | > 109 |
| Pseudomonas fluorescens FW300-N2C3 | 0.33 | AO356_01805 | | LysR family transcriptional regulator | 0.43 | AO356_09640 | | histidine utilization repressor | low | > 104 |
| Pseudomonas fluorescens FW300-N2E2 | 0.33 | Pf6N2E2_2228 | | Transcriptional regulator, LysR family | 0.43 | Pf6N2E2_3807 | | Histidine utilization repressor | low | > 103 |
| Pseudomonas sp. RS175 | 0.33 | PFR28_01216 | | Transcriptional activator protein NhaR | 0.43 | PFR28_04963 | | HTH-type transcriptional repressor NagR | low | > 88 |
| Acidovorax sp. GW101-3H11 | 0.33 | Ac3H11_815 | | Transcriptional regulator, LysR family | 0.40 | Ac3H11_2559 | | Histidine utilization repressor | low | > 79 |
| Paraburkholderia sabiae LMG 24235 | 0.32 | QEN71_RS11585 | | transcriptional activator NhaR | 0.43 | QEN71_RS23510 | | histidine utilization repressor | low | > 153 |
| Paraburkholderia bryophila 376MFSha3.1 | 0.31 | H281DRAFT_01823 | | transcriptional regulator, LysR family | 0.45 | H281DRAFT_04872 | | transcriptional regulator, histidine utilization repressor, GntR family | — | — |
| Paraburkholderia graminis OAS925 | 0.30 | ABIE53_004867 | | LysR family transcriptional activator of nhaA | 0.45 | ABIE53_001730 | | GntR family histidine utilization transcriptional repressor | low | > 113 |
| Burkholderia phytofirmans PsJN | 0.30 | BPHYT_RS10255 | | LysR family transcriptional regulator | 0.44 | BPHYT_RS07560 | | histidine utilization repressor | — | — |
| Dechlorosoma suillum PS | 0.30 | Dsui_1151 | | transcriptional regulator | 0.15 | Dsui_2210 | | transcriptional regulator | low | > 51 |
| Herbaspirillum seropedicae SmR1 | 0.27 | HSERO_RS19615 | | LysR family transcriptional regulator | 0.17 | HSERO_RS14920 | | GntR family transcriptional regulator | — | — |
| Alteromonas macleodii MIT1002 | 0.24 | MIT1002_03553 | | Na(+)/H(+) antiporter regulatory protein | 0.38 | MIT1002_00903 | | putative HTH-type transcriptional regulator YurK | low | > 70 |
| Hydrogenophaga sp. GW460-11-11-14-LB1 | 0.24 | GFF1910 | | Cys regulon transcriptional activator CysB | 0.37 | GFF3591 | | Histidine utilization repressor | low | > 90 |
Not shown: 6 genomes with orthologs for CSW01_03550 only; 36 genomes with orthologs for CSW01_06100 only