| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Xanthobacter sp. DMC5 | GFF791 | | HTH-type transcriptional regulator CymR | insig. | 100 | 100 |
| | Xanthobacter sp. DMC5 | GFF2219 | | HTH-type transcriptional regulator CymR | no data | 64 | 100 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS09345 | | Rrf2 family transcriptional regulator | no data | 53 | 99 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS05390 | | Rrf2 family transcriptional regulator | no data | 53 | 99 |
| | Sinorhizobium meliloti 1021 | SMc02267 | | hypothetical protein | insig. | 51 | 90 |
| | Agrobacterium fabrum C58 | Atu3423 | | hypothetical protein | insig. | 51 | 90 |
| | Azospirillum brasilense Sp245 | AZOBR_RS19255 | | Rrf2 family transcriptional regulator | no data | 46 | 89 |
| | Sinorhizobium meliloti 1021 | SM_b20994 | | hypothetical protein | strong | 51 | 90 |
| | Rhodospirillum rubrum S1H | Rru_A1171 | | Transcriptional Regulator, BadM/Rrf2 family (NCBI) | no data | 47 | 100 |
| | Azospirillum sp. SherDot2 | MPMX19_04817 | | HTH-type transcriptional repressor NsrR | no data | 46 | 89 |
| | Rhizobium sp. OAE497 | ABIE40_RS15020 | | Rrf2 family transcriptional regulator | insig. | 49 | 88 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_2132 | | transcriptional regulator, BadM/Rrf2 family | strong | 48 | 89 |
| | Rhizobium sp. OAE497 | ABIE40_RS04485 | | Rrf2 family transcriptional regulator | insig. | 45 | 89 |
| | Agrobacterium fabrum C58 | Atu0819 | | hypothetical protein | sig. | 45 | 89 |
| | Rhodospirillum rubrum S1H | Rru_A3399 | | Transcriptional Regulator, BadM/Rrf2 family (NCBI) | sig. | 42 | 89 |
| o | Cellulophaga baltica 18 | M666_RS08160 | | Rrf2 family transcriptional regulator | insig. | 45 | 90 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS04090 | | transcriptional regulator | no data | 40 | 90 |
| | Caulobacter crescentus NA1000 | CCNA_02708 | | Rrf2 family protein | strong | 42 | 95 |
| | Caulobacter crescentus NA1000 Δfur | CCNA_02708 | | Rrf2 family protein | cofit | 42 | 95 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS12005 | | Rrf2 family transcriptional regulator | no data | 38 | 90 |
| | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS14460 | | Rrf2 family transcriptional regulator | no data | 40 | 88 |
| | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_0986 | | Rrf2 family protein | strong | 38 | 91 |
| o | Shewanella amazonensis SB2B | Sama_0056 | | Rrf2 family protein (RefSeq) | insig. | 35 | 89 |
| o | Shewanella loihica PV-4 | Shew_3810 | | BadM/Rrf2 family transcriptional regulator (RefSeq) | insig. | 34 | 97 |
| | Sphingobium sp. HT1-2 | GFF668 | | Rrf2 family transcriptional regulator | cofit | 32 | 89 |
| o | Shewanella sp. ANA-3 | Shewana3_0047 | | BadM/Rrf2 family transcriptional regulator (RefSeq) | no data | 34 | 89 |
| | Escherichia coli BL21 | ECD_04045 | | nitric oxide-sensitive repressor for NO regulon | sig. | 30 | 89 |
| | Escherichia coli ECRC62 | BNILDI_07000 | nsrR | nitric oxide-sensing transcriptional repressor NsrR | cofit | 30 | 89 |
| | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_03864 | | HTH-type transcriptional repressor NsrR | insig. | 30 | 89 |
| | Escherichia fergusonii Becca | EFB2_04357 | | HTH-type transcriptional repressor NsrR | sig. | 30 | 89 |
| | Escherichia coli ECOR27 | NOLOHH_04490 | nsrR | nitric oxide-sensing transcriptional repressor NsrR | cofit | 30 | 89 |
| | Escherichia coli ECOR38 | HEPCGN_10455 | nsrR | nitric oxide-sensing transcriptional repressor NsrR | cofit | 30 | 89 |
| | Escherichia coli ECRC100 | OKFHMN_12225 | nsrR | nitric oxide-sensing transcriptional repressor NsrR | cofit | 30 | 89 |
| | Escherichia coli ECRC102 | NIAGMN_10075 | nsrR | nitric oxide-sensing transcriptional repressor NsrR | cofit | 30 | 89 |
| | Escherichia coli ECRC98 | JDDGAC_15865 | nsrR | nitric oxide-sensing transcriptional repressor NsrR | insig. | 30 | 89 |
| | Escherichia coli ECRC99 | KEDOAH_15930 | nsrR | nitric oxide-sensing transcriptional repressor NsrR | no data | 30 | 89 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS24260 | | nitric oxide-sensing transcriptional repressor NsrR | insig. | 30 | 89 |
| | Escherichia coli BW25113 | b4178 | yjeB | predicted DNA-binding transcriptional regulator (NCBI) | strong | 30 | 89 |
| o | Shewanella oneidensis MR-1 | SO0045 | | Rrf2 family protein (NCBI ptt file) | insig. | 32 | 89 |
| | Enterobacter asburiae PDN3 | EX28DRAFT_3375 | | transcriptional regulator, BadM/Rrf2 family | insig. | 31 | 89 |
| | Mycobacterium tuberculosis H37Rv | Rv1287 | | Conserved hypothetical protein | insig. | 31 | 89 |
| | Salmonella enterica subsp. enterica serovar Typhimurium str. MS1868 | GFF831 | | Nitrite-sensitive transcriptional repressor NsrR | insig. | 29 | 91 |
| | Escherichia coli ECRC101 | MCAODC_02740 | nsrR | nitric oxide-sensing transcriptional repressor NsrR | sig. | 30 | 89 |
| | Klebsiella pneumoniae MKP103 | KDGMDA_11070 | | nitric oxide-sensing transcriptional repressor NsrR | insig. | 30 | 89 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS12785 | | Rrf2 family transcriptional regulator | sig. | 32 | 94 |
| o | Dickeya dianthicola 67-19 | HGI48_RS17320 | | nitric oxide-sensing transcriptional repressor NsrR | insig. | 29 | 89 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_00477 | | transcriptional regulator, BadM/Rrf2 family | no data | 32 | 94 |
| | Paraburkholderia graminis OAS925 | ABIE53_002782 | | Rrf2 family iron-sulfur cluster assembly transcriptional regulator | strong | 32 | 94 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS05780 | | Fe-S cluster assembly transcriptional regulator IscR | insig. | 32 | 94 |
| | Klebsiella michiganensis M5al | BWI76_RS02570 | | transcriptional regulator | strong | 29 | 89 |
| o | Synechococcus elongatus PCC 7942 | Synpcc7942_B2618 | | transcriptional regulator, BadM/Rrf2 family | insig. | 35 | 87 |
| o | Cupriavidus basilensis FW507-4G11 | RR42_RS09180 | | Rrf2 family transcriptional regulator | insig. | 32 | 98 |
| | Pantoea sp. MT58 | IAI47_02620 | | nitric oxide-sensing transcriptional repressor NsrR | sig. | 29 | 89 |
| | Dickeya dadantii 3937 | DDA3937_RS17265 | | nitric oxide-sensing transcriptional repressor NsrR | sig. | 28 | 89 |
| | Enterobacter sp. TBS_079 | MPMX20_00459 | | HTH-type transcriptional repressor NsrR | strong | 28 | 89 |
| | Pantoea agglomerans CFBP13505 P0401 | PagCFBP13505_RS11215 | | nitric oxide-sensing transcriptional repressor NsrR | cofit | 29 | 89 |
| o | Dickeya dianthicola ME23 | DZA65_RS18410 | | nitric oxide-sensing transcriptional repressor NsrR | insig. | 28 | 89 |
| | Pectobacterium carotovorum WPP14 | HER17_RS03830 | | nitric oxide-sensing transcriptional repressor NsrR | cofit | 27 | 89 |
| | Azospirillum sp. SherDot2 | MPMX19_04829 | | Putative HTH-type transcriptional regulator | no data | 35 | 89 |
| o | Marinobacter adhaerens HP15 | HP15_2950 | | transcriptional regulator, BadM/Rrf2 family | sig. | 30 | 89 |
| | Synechocystis sp000284455 PCC 6803 | SGL_RS15215 | | RrF2 family transcriptional regulator | strong | 39 | 62 |
| | Serratia liquefaciens MT49 | IAI46_01655 | | nitric oxide-sensing transcriptional repressor NsrR | strong | 27 | 89 |
| o | Acinetobacter baumannii LAC-4 | RR41_RS12350 | | Rrf2 family transcriptional regulator | no data | 31 | 97 |
| | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS14260 | | Fe-S cluster assembly transcriptional regulator IscR | no data | 31 | 94 |
| | Ralstonia solanacearum UW163 | UW163_RS11725 | | Fe-S cluster assembly transcriptional regulator IscR | no data | 31 | 94 |
| o | Acinetobacter radioresistens SK82 | MPMX26_01328 | | HTH-type transcriptional regulator IscR | strong | 29 | 97 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS06520 | | transcriptional regulator | cofit | 30 | 89 |
| o | Herbaspirillum seropedicae SmR1 | HSERO_RS15775 | | DNA-binding protein | no data | 29 | 91 |
| | Ralstonia solanacearum PSI07 | RPSI07_RS08075 | | Rrf2 family transcriptional regulator | insig. | 32 | 91 |
| | Ralstonia solanacearum GMI1000 | RS_RS05040 | | Fe-S cluster assembly transcriptional regulator IscR | no data | 30 | 94 |
| | Ralstonia solanacearum PSI07 | RPSI07_RS19205 | | Fe-S cluster assembly transcriptional regulator IscR | sig. | 30 | 94 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS06020 | | Fe-S cluster assembly transcriptional regulator IscR | insig. | 30 | 91 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_0623 | | transcriptional regulator, BadM/Rrf2 family (RefSeq) | insig. | 30 | 85 |
| | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS09195 | | Rrf2 family transcriptional regulator | insig. | 33 | 91 |
| | Ralstonia solanacearum UW163 | UW163_RS04400 | | Rrf2 family transcriptional regulator | insig. | 33 | 91 |
| | Ralstonia solanacearum GMI1000 | RS_RS17025 | | Rrf2 family transcriptional regulator | strong | 33 | 89 |
| | Caulobacter crescentus NA1000 | CCNA_01942 | | Rrf2 family protein | strong | 28 | 89 |
| | Caulobacter crescentus NA1000 Δfur | CCNA_01942 | | Rrf2 family protein | cofit | 28 | 89 |
| | Castellaniella sp019104865 MT123 | ABCV34_RS05100 | | Fe-S cluster assembly transcriptional regulator IscR | cofit | 31 | 91 |
| | Ralstonia sp. UNC404CL21Col | ABZR87_RS09975 | | Fe-S cluster assembly transcriptional regulator IscR | strong | 31 | 94 |
| | Azospirillum brasilense Sp245 | AZOBR_RS05830 | | Rrf2 family transcriptional regulator | strong | 35 | 64 |
| | Ralstonia sp. UNC404CL21Col | ABZR87_RS04615 | | Rrf2 family transcriptional regulator | sig. | 31 | 91 |
| | Desulfovibrio vulgaris Hildenborough JW710 | DVU0529 | rrf2 | Rrf2 protein (voordouw) | strong | 31 | 92 |
| | Pseudomonas sp. BP01 | JOY50_RS22825 | iscR | Fe-S cluster assembly transcriptional regulator IscR | insig. | 29 | 89 |
| | Vibrio cholerae E7946 ATCC 55056 | CSW01_03880 | | HTH-type transcriptional regulator IscR | insig. | 27 | 89 |
| | Erwinia amylovora T8 | OLJFJH_10360 | | Fe-S cluster assembly transcriptional regulator IscR | insig. | 31 | 89 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS15265 | | Rrf2 family transcriptional regulator | no data | 34 | 61 |
| o | Pseudomonas putida KT2440 | PP_0841 | | DNA-binding transcriptional dual regulator 2Fe-2S cluster IscR | sig. | 30 | 91 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_2591 | | transcriptional regulator, BadM/Rrf2 family (RefSeq) | strong | 31 | 92 |
| | Sphingobium sp. HT1-2 | GFF1638 | | Nitrite-sensitive transcriptional repressor NsrR | cofit | 30 | 93 |
| | Shewanella loihica PV-4 | Shew_2318 | | BadM/Rrf2 family transcriptional regulator (RefSeq) | no data | 29 | 91 |
| | Pseudomonas segetis P6 | ACVTMO_RS07460 | iscR | Fe-S cluster assembly transcriptional regulator IscR | insig. | 29 | 89 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF4961 | | Iron-sulfur cluster regulator IscR | no data | 29 | 91 |
| | Azospirillum sp. SherDot2 | MPMX19_01654 | | HTH-type transcriptional regulator IscR | insig. | 34 | 64 |
| | Erwinia tracheiphila HP pepo 2.2 | IJEDHG_02875 | iscR | Fe-S cluster assembly transcriptional regulator IscR | insig. | 29 | 89 |
| | Erwinia tracheiphila SCR3 | LU632_RS17875 | iscR | Fe-S cluster assembly transcriptional regulator IscR | insig. | 29 | 89 |
| | Shewanella amazonensis SB2B | Sama_1292 | | Rrf2 family protein (RefSeq) | strong | 29 | 91 |
| | Pseudomonas sp. SVBP6 | COO64_RS03890 | iscR | Fe-S cluster assembly transcriptional regulator IscR | insig. | 29 | 89 |
| | Rahnella sp. WP5 | EX31_RS08790 | | nitric oxide-sensing transcriptional repressor NsrR | insig. | 24 | 89 |
| | Pantoea sp. MT58 | IAI47_05000 | | Fe-S cluster assembly transcriptional regulator IscR | strong | 29 | 89 |