| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_4495 | | Rrf2 family protein | insig. | 100 | 100 |
| o | Cellulophaga baltica 18 | M666_RS16145 | | Rrf2 family transcriptional regulator | no data | 51 | 100 |
| o | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS12670 | | Rrf2 family transcriptional regulator | no data | 49 | 100 |
| o | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_06790 | | transcriptional regulator | insig. | 37 | 99 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_2132 | | transcriptional regulator, BadM/Rrf2 family | strong | 25 | 93 |
| | Pseudomonas sp. S08-1 | OH686_17470 | | iron-sulfur cluster assembly transcription factor IscR | insig. | 25 | 86 |
| | Shewanella sp. ANA-3 | Shewana3_2281 | | BadM/Rrf2 family transcriptional regulator (RefSeq) | strong | 30 | 87 |
| | Shewanella oneidensis MR-1 | SO2263 | | Rrf2 family protein (NCBI ptt file) | strong | 30 | 87 |
| | Pectobacterium carotovorum WPP14 | HER17_RS06010 | | Fe-S cluster assembly transcriptional regulator IscR | cofit | 31 | 90 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_1236 | | transcriptional regulator, BadM/Rrf2 family | insig. | 27 | 86 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_1236 | | transcriptional regulator, BadM/Rrf2 family | insig. | 27 | 86 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS24860 | | Fe-S cluster assembly transcriptional regulator IscR | sig. | 26 | 86 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS24860 | | Fe-S cluster assembly transcriptional regulator IscR | strong | 26 | 86 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_04793 | | HTH-type transcriptional regulator IscR | no data | 26 | 86 |
| | Pseudomonas sp. RS175 | PFR28_00285 | | HTH-type transcriptional regulator IscR | insig. | 26 | 86 |
| | Pseudomonas orientalis W4I3 | QF045_RS25425 | | Fe-S cluster assembly transcriptional regulator IscR | cofit | 26 | 86 |
| | Pseudomonas simiae WCS417 | PS417_23205 | | transcriptional regulator | strong | 26 | 86 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_15830 | | transcriptional regulator | strong | 26 | 86 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_06650 | | transcriptional regulator | strong | 26 | 86 |
| o | Pseudomonas aeruginosa MRSN321 | DY961_RS03750 | | Rrf2 family transcriptional regulator | insig. | 23 | 91 |
| o | Pseudomonas aeruginosa PA14 | IKLFDK_13525 | | transcriptional regulator | no data | 23 | 91 |
| o | Pseudomonas aeruginosa PUPa3 | DQ20_RS34785 | | Rrf2 family transcriptional regulator | insig. | 23 | 91 |
| | Pseudomonas sp. SVBP6 | COO64_RS03890 | iscR | Fe-S cluster assembly transcriptional regulator IscR | insig. | 26 | 86 |
| | Rahnella sp. WP5 | EX31_RS20550 | | Fe-S cluster assembly transcriptional regulator IscR | strong | 30 | 86 |
| | Agrobacterium fabrum C58 | Atu0819 | | hypothetical protein | sig. | 24 | 90 |
| | Sphingobium sp. HT1-2 | GFF668 | | Rrf2 family transcriptional regulator | cofit | 29 | 89 |
| | Pseudomonas segetis P6 | ACVTMO_RS07460 | iscR | Fe-S cluster assembly transcriptional regulator IscR | insig. | 25 | 86 |
| | Pseudomonas stutzeri RCH2 | Psest_1250 | | iron-sulfur cluster assembly transcription factor IscR | no data | 25 | 86 |
| | Pseudomonas sp. BP01 | JOY50_RS07645 | | Rrf2 family transcriptional regulator | insig. | 22 | 92 |
| | Pseudomonas sp. BP01 | JOY50_RS22825 | iscR | Fe-S cluster assembly transcriptional regulator IscR | insig. | 25 | 86 |
| | Pantoea sp. MT58 | IAI47_05000 | | Fe-S cluster assembly transcriptional regulator IscR | strong | 29 | 86 |
| | Dickeya dadantii 3937 | DDA3937_RS15550 | | Fe-S cluster assembly transcriptional regulator IscR | no data | 28 | 90 |
| | Pseudomonas sp. DMC3 | GFF4351 | | HTH-type transcriptional regulator IscR | no data | 25 | 86 |
| o | Cupriavidus basilensis FW507-4G11 | RR42_RS22735 | | transcriptional regulator | insig. | 24 | 94 |
| | Dickeya dianthicola 67-19 | HGI48_RS15650 | | Fe-S cluster assembly transcriptional regulator IscR | no data | 28 | 90 |
| | Dickeya dianthicola ME23 | DZA65_RS16725 | | Fe-S cluster assembly transcriptional regulator IscR | insig. | 28 | 90 |
| | Shewanella amazonensis SB2B | Sama_1292 | | Rrf2 family protein (RefSeq) | strong | 28 | 87 |
| o | Azospirillum sp. SherDot2 | MPMX19_01654 | | HTH-type transcriptional regulator IscR | insig. | 27 | 98 |
| o | Azospirillum brasilense Sp245 | AZOBR_RS05830 | | Rrf2 family transcriptional regulator | strong | 27 | 98 |
| | Pseudomonas aeruginosa MRSN321 | DY961_RS13845 | iscR;go_function=double-stranded | Fe-S cluster assembly transcriptional regulator IscR | sig. | 25 | 86 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_19645 | | Fe-S cluster assembly transcriptional regulator IscR | strong | 25 | 86 |
| | Pseudomonas aeruginosa PUPa3 | DQ20_RS43255 | iscR;go_function=double-stranded | Fe-S cluster assembly transcriptional regulator IscR | sig. | 25 | 86 |
| | Agrobacterium fabrum C58 | Atu3423 | | hypothetical protein | insig. | 25 | 89 |
| | Pseudomonas putida KT2440 | PP_0841 | | DNA-binding transcriptional dual regulator 2Fe-2S cluster IscR | sig. | 24 | 86 |
| | Desulfovibrio vulgaris Miyazaki F | DvMF_2547 | | transcriptional regulator, BadM/Rrf2 family (RefSeq) | strong | 23 | 93 |
| | Serratia liquefaciens MT49 | IAI46_19360 | | Fe-S cluster assembly transcriptional regulator IscR | insig. | 29 | 86 |
| | Pantoea agglomerans CFBP13505 P0401 | PagCFBP13505_RS14890 | | Fe-S cluster assembly transcriptional regulator IscR | cofit | 28 | 86 |
| | Erwinia tracheiphila HP pepo 2.2 | IJEDHG_02875 | iscR | Fe-S cluster assembly transcriptional regulator IscR | insig. | 28 | 86 |
| | Erwinia tracheiphila SCR3 | LU632_RS17875 | iscR | Fe-S cluster assembly transcriptional regulator IscR | insig. | 28 | 86 |
| | Rhizobium sp. OAE497 | ABIE40_RS15020 | | Rrf2 family transcriptional regulator | insig. | 25 | 89 |
| | Rhizobium sp. OAE497 | ABIE40_RS03340 | | iron-responsive transcriptional regulator RirA | strong | 27 | 90 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS12005 | | Rrf2 family transcriptional regulator | no data | 26 | 91 |
| | Shewanella loihica PV-4 | Shew_2318 | | BadM/Rrf2 family transcriptional regulator (RefSeq) | no data | 27 | 87 |
| | Sinorhizobium meliloti 1021 | SM_b20994 | | hypothetical protein | strong | 24 | 92 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS09345 | | Rrf2 family transcriptional regulator | no data | 24 | 91 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_3808 | | Predicted transcriptional regulator of NADH dehydrogenase, Rrf2 family | insig. | 29 | 60 |
| o | Rhodospirillum rubrum S1H | Rru_A2028 | | Transcriptional Regulator, BadM/Rrf2 family (NCBI) | no data | 27 | 98 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS15755 | | Rrf2 family transcriptional regulator | strong | 25 | 91 |
| | Azospirillum brasilense Sp245 | AZOBR_RS19255 | | Rrf2 family transcriptional regulator | no data | 24 | 90 |
| | Dickeya dianthicola ME23 | DZA65_RS18410 | | nitric oxide-sensing transcriptional repressor NsrR | insig. | 28 | 89 |
| | Erwinia amylovora T8 | OLJFJH_10360 | | Fe-S cluster assembly transcriptional regulator IscR | insig. | 27 | 86 |
| o | Klebsiella michiganensis M5al | BWI76_RS02570 | | transcriptional regulator | strong | 27 | 89 |
| | Azospirillum sp. SherDot2 | MPMX19_04817 | | HTH-type transcriptional repressor NsrR | no data | 24 | 90 |
| | Sphingobium sp. HT1-2 | GFF975 | | Iron-sulfur cluster regulator IscR | cofit | 27 | 94 |
| o | Escherichia coli BL21 | ECD_04045 | | nitric oxide-sensitive repressor for NO regulon | sig. | 27 | 89 |
| | Dickeya dianthicola 67-19 | HGI48_RS17320 | | nitric oxide-sensing transcriptional repressor NsrR | insig. | 27 | 89 |
| o | Escherichia coli ECRC62 | BNILDI_07000 | nsrR | nitric oxide-sensing transcriptional repressor NsrR | cofit | 27 | 89 |
| o | Escherichia coli HS(pFamp)R (ATCC 700891) | OHPLBJKB_03864 | | HTH-type transcriptional repressor NsrR | insig. | 27 | 89 |
| | Azospirillum sp. SherDot2 | MPMX19_04829 | | Putative HTH-type transcriptional regulator | no data | 22 | 90 |
| o | Klebsiella pneumoniae MKP103 | KDGMDA_11070 | | nitric oxide-sensing transcriptional repressor NsrR | insig. | 27 | 89 |
| | Agrobacterium fabrum C58 | Atu0201 | | hypothetical protein | strong | 26 | 90 |
| | Ralstonia sp. UNC404CL21Col | ABZR87_RS04615 | | Rrf2 family transcriptional regulator | sig. | 25 | 92 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_866 | | Iron-sulfur cluster regulator IscR | strong | 24 | 85 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_3190 | | Iron-sulfur cluster regulator IscR | strong | 24 | 83 |
| | Magnetospirillum magneticum AMB-1 | AMB_RS05390 | | Rrf2 family transcriptional regulator | no data | 23 | 91 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_4874 | | Iron-sulfur cluster regulator IscR | sig. | 24 | 85 |
| | Vibrio cholerae E7946 ATCC 55056 | CSW01_03880 | | HTH-type transcriptional regulator IscR | insig. | 27 | 87 |
| | Dickeya dadantii 3937 | DDA3937_RS17265 | | nitric oxide-sensing transcriptional repressor NsrR | sig. | 27 | 89 |
| o | Enterobacter asburiae PDN3 | EX28DRAFT_3375 | | transcriptional regulator, BadM/Rrf2 family | insig. | 27 | 89 |
| | Xanthomonas campestris pv. campestris strain 8004 | Xcc-8004.1701.1 | | Iron-sulfur cluster regulator IscR | no data | 24 | 88 |
| | Sinorhizobium meliloti 1021 | SMc00785 | | iron-responsive transcriptional regulator | no data | 25 | 90 |
| | Azospirillum brasilense Sp245 | AZOBR_RS01075 | | Rrf2 family transcriptional regulator | no data | 34 | 58 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_1470 | | transcriptional regulator, BadM/Rrf2 family | no data | 25 | 92 |
| | Sinorhizobium meliloti 1021 | SMc02267 | | hypothetical protein | insig. | 23 | 89 |
| | Pseudomonas segetis P6 | ACVTMO_RS05520 | | RrF2 family transcriptional regulator | sig. | 20 | 93 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS04090 | | transcriptional regulator | no data | 25 | 91 |
| | Rhodospirillum rubrum S1H | Rru_A3795 | | Transcriptional Regulator, BadM/Rrf2 family (NCBI) | no data | 31 | 58 |
| | Escherichia fergusonii Becca | EFB2_04357 | | HTH-type transcriptional repressor NsrR | sig. | 27 | 89 |
| | Escherichia coli ECOR27 | NOLOHH_04490 | nsrR | nitric oxide-sensing transcriptional repressor NsrR | cofit | 27 | 89 |
| | Escherichia coli ECOR38 | HEPCGN_10455 | nsrR | nitric oxide-sensing transcriptional repressor NsrR | cofit | 27 | 89 |
| | Escherichia coli ECRC100 | OKFHMN_12225 | nsrR | nitric oxide-sensing transcriptional repressor NsrR | cofit | 27 | 89 |
| | Escherichia coli ECRC102 | NIAGMN_10075 | nsrR | nitric oxide-sensing transcriptional repressor NsrR | cofit | 27 | 89 |
| | Escherichia coli ECRC98 | JDDGAC_15865 | nsrR | nitric oxide-sensing transcriptional repressor NsrR | insig. | 27 | 89 |
| | Escherichia coli ECRC99 | KEDOAH_15930 | nsrR | nitric oxide-sensing transcriptional repressor NsrR | no data | 27 | 89 |
| | Escherichia coli Nissle 1917 | ECOLIN_RS24260 | | nitric oxide-sensing transcriptional repressor NsrR | insig. | 27 | 89 |
| | Escherichia coli BW25113 | b4178 | yjeB | predicted DNA-binding transcriptional regulator (NCBI) | strong | 27 | 89 |
| | Klebsiella michiganensis M5al | BWI76_RS26590 | | transcriptional regulator | insig. | 27 | 64 |
| | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS14460 | | Rrf2 family transcriptional regulator | no data | 26 | 89 |
| | Lysobacter sp. OAE881 | ABIE51_RS15725 | | SUF system Fe-S cluster assembly regulator | insig. | 25 | 73 |
| | Synechococcus elongatus PCC 7942 | Synpcc7942_1465 | | transcriptional regulator, BadM/Rrf2 family | no data | 24 | 72 |