| Orth | Species | Gene | Name | Description | Fitness | %Id | Cov |
| | Xanthobacter sp. DMC5 | GFF1979 | | Sulfite reductase [ferredoxin] | strong | 100 | 100 |
| o | Rhodopseudomonas palustris CGA009 | TX73_019220 | | NirA family protein | insig. | 61 | 100 |
| o | Bosea sp. OAE506 | ABIE41_RS21305 | | NirA family protein | insig. | 62 | 100 |
| o | Synechocystis sp000284455 PCC 6803 | SGL_RS14775 | | ferredoxin--nitrite reductase | no data | 37 | 83 |
| o | Synechococcus elongatus PCC 7942 | Synpcc7942_1240 | nirA | ferredoxin-nitrite reductase | no data | 36 | 86 |
| | Mycobacterium tuberculosis H37Rv | Rv2391 | | Ferredoxin-dependent sulfite reductase SirA | no data | 32 | 80 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_13605 | | oxidoreductase | strong | 33 | 68 |
| | Ralstonia solanacearum PSI07 | RPSI07_RS12775 | | nitrite/sulfite reductase | strong | 29 | 79 |
| | Ralstonia solanacearum IBSBF1503 | RALBFv3_RS04600 | | sulfite reductase | sig. | 29 | 79 |
| | Ralstonia solanacearum UW163 | UW163_RS09070 | | sulfite reductase | strong | 29 | 79 |
| | Herbaspirillum seropedicae SmR1 | HSERO_RS15550 | | sulfite reductase | strong | 28 | 81 |
| | Synechococcus elongatus PCC 7942 | Synpcc7942_1851 | cobG | Ferredoxin--nitrite reductase | no data | 27 | 80 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_22865 | | sulfite reductase | insig. | 27 | 81 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_3285 | | Sulfite reductase [NADPH] hemoprotein beta-component (EC 1.8.1.2) | insig. | 27 | 80 |
| | Ralstonia sp. UNC404CL21Col | ABZR87_RS00210 | | nitrite/sulfite reductase | strong | 28 | 81 |
| | Ralstonia solanacearum GMI1000 | RS_RS12170 | | nitrite/sulfite reductase | strong | 28 | 79 |
| | Pseudomonas sp. RS175 | PFR28_05204 | | Sulfite reductase [ferredoxin] | sig. | 35 | 68 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_4656 | | Sulfite reductase [NADPH] hemoprotein beta-component (EC 1.8.1.2) | insig. | 28 | 80 |
| | Pseudomonas sp. SVBP6 | COO64_RS18255 | cobG | precorrin-3B synthase | cofit | 33 | 68 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_1329 | | Cobalamin biosynthesis protein CobG | strong | 33 | 67 |
| | Methylophilus sp. DMC18 | GFF1019 | | Sulfite reductase [ferredoxin] | no data | 28 | 80 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_21270 | | sulfite reductase | insig. | 28 | 80 |
| | Pseudomonas aeruginosa MRSN321 | DY961_RS28130 | | nitrite/sulfite reductase | insig. | 28 | 80 |
| | Pseudomonas aeruginosa PUPa3 | DQ20_RS47510 | | nitrite/sulfite reductase | insig. | 28 | 80 |
| | Pseudomonas sp. S08-1 | OH686_05125 | | precorrin-3B synthase | insig. | 33 | 67 |
| | Dechlorosoma suillum PS | Dsui_1986 | | sulfite reductase, beta subunit (hemoprotein) | no data | 29 | 80 |
| | Pseudomonas sp. SVBP6 | COO64_RS13825 | | nitrite/sulfite reductase | insig. | 28 | 80 |
| | Rhodospirillum rubrum S1H | Rru_A1931 | | Ferredoxin--nitrite reductase (NCBI) | no data | 29 | 79 |
| | Brevundimonas sp. GW460-12-10-14-LB2 | A4249_RS09665 | | nitrite/sulfite reductase | strong | 29 | 80 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_08280 | | oxidoreductase | strong | 34 | 68 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_67 | | Cobalamin biosynthesis protein CobG | strong | 31 | 68 |
| | Echinicola vietnamensis KMM 6221, DSM 17526 | Echvi_0981 | | Sulfite reductase, beta subunit (hemoprotein) | insig. | 26 | 80 |
| | Cellulophaga baltica 18 | M666_RS08185 | | HEPN domain-containing protein | no data | 28 | 67 |
| | Pontibacter actiniarum KMM 6156, DSM 19842 | CA264_02515 | | nitrite reductase | strong | 26 | 80 |
| | Paraburkholderia graminis OAS925 | ABIE53_001226 | | sulfite reductase (NADPH) hemoprotein beta-component | strong | 27 | 81 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_3534 | | Cobalamin biosynthesis protein CobG | insig. | 35 | 68 |
| | Bosea sp. OAE506 | ABIE41_RS15335 | | nitrite/sulfite reductase | sig. | 27 | 79 |
| | Pseudomonas sp. S08-1 | OH686_03470 | | Sulfite reductase [NADPH] hemoprotein beta-component | strong | 27 | 81 |
| | Phaeobacter inhibens DSM 17395 | PGA1_c20760 | | putative nitrite/sulfite reductase | no data | 28 | 80 |
| | Pseudomonas segetis P6 | MPMX49_02597 | | Sulfite reductase [ferredoxin] | no data | 27 | 81 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS16270 | | sulfite reductase | strong | 26 | 79 |
| | Sinorhizobium meliloti 1021 | SMc02124 | | nitrite reductase | strong | 28 | 80 |
| | Paraburkholderia bryophila 376MFSha3.1 | H281DRAFT_00114 | | sulfite reductase (NADPH) beta subunit | strong | 27 | 81 |
| | Marinobacter adhaerens HP15 | HP15_1795 | | sulfite reductase hemoprotein, beta subunit | cofit | 27 | 80 |
| | Pedobacter sp. GW460-11-11-14-LB5 | CA265_RS04095 | | nitrite reductase | strong | 27 | 80 |
| | Pseudomonas aeruginosa MRSN321 | DY961_RS20920 | | nitrite/sulfite reductase | strong | 27 | 81 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_08940 | | sulfite reductase | strong | 27 | 81 |
| | Pseudomonas aeruginosa PUPa3 | DQ20_RS55000 | | nitrite/sulfite reductase | strong | 27 | 81 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS25255 | | nitrite/sulfite reductase | strong | 26 | 81 |
| | Pseudomonas sp. DMC3 | GFF3300 | | Sulfite reductase [ferredoxin] | no data | 33 | 68 |
| | Dinoroseobacter shibae DFL-12 | Dshi_1153 | | nitrite/sulfite reductase hemoprotein beta-component ferrodoxin domain protein (RefSeq) | no data | 28 | 80 |
| | Azospirillum brasilense Sp245 | AZOBR_RS10125 | | sulfite reductase | strong | 29 | 81 |
| | Pseudomonas simiae WCS417 | PS417_02900 | | oxidoreductase | no data | 31 | 68 |
| | Pseudomonas sp. BP01 | JOY50_RS02185 | | DUF2849 domain-containing protein | insig. | 28 | 80 |
| | Cupriavidus basilensis FW507-4G11 | RR42_RS32940 | | sulfite reductase | insig. | 28 | 80 |
| | Paraburkholderia graminis OAS925 | ABIE53_005932 | | precorrin-3B synthase | strong | 29 | 69 |
| | Caulobacter crescentus NA1000 | CCNA_01177 | | sulfite reductase, beta subunit | strong | 27 | 80 |
| | Caulobacter crescentus NA1000 Δfur | CCNA_01177 | | sulfite reductase, beta subunit | cofit | 27 | 80 |
| | Rhodopseudomonas palustris CGA009 | TX73_021840 | | nitrite/sulfite reductase | strong | 27 | 80 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS04725 | | sulfite reductase | strong | 27 | 81 |
| | Paraburkholderia sabiae LMG 24235 | QEN71_RS36875 | | nitrite/sulfite reductase | insig. | 26 | 81 |
| | Pseudomonas fluorescens FW300-N2E2 | Pf6N2E2_2073 | | Sulfite reductase [NADPH] hemoprotein beta-component (EC 1.8.1.2) | strong | 25 | 81 |
| | Azospirillum sp. SherDot2 | MPMX19_00652 | | Sulfite reductase [ferredoxin] | strong | 28 | 79 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_4417 | | Ferredoxin--nitrite reductase | insig. | 31 | 68 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_4417 | | Ferredoxin--nitrite reductase | insig. | 31 | 68 |
| | Rhizobium sp. OAE497 | ABIE40_RS20885 | | DUF2849 domain-containing protein | cofit | 27 | 79 |
| | Agrobacterium fabrum C58 | Atu1456 | | sulfite reductase (NADPH) hemoprotein beta-component | strong | 28 | 80 |
| | Pseudomonas fluorescens FW300-N2C3 | AO356_00555 | | sulfite reductase | strong | 25 | 81 |
| | Pseudomonas aeruginosa PA14 | IKLFDK_14765 | | precorrin-3B synthase | no data | 30 | 68 |
| | Pseudomonas sp. SVBP6 | COO64_RS24895 | | nitrite/sulfite reductase | insig. | 26 | 81 |
| | Acinetobacter baumannii LAC-4 | RR41_RS03245 | | nitrite/sulfite reductase | sig. | 25 | 80 |
| | Pseudomonas aeruginosa PUPa3 | DQ20_RS33130 | cobG;go_function=oxidoreductase | precorrin-3B synthase | no data | 30 | 68 |
| | Pseudomonas aeruginosa MRSN321 | DY961_RS02460 | cobG;go_function=oxidoreductase | precorrin-3B synthase | no data | 30 | 68 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_00812 | | Sulfite reductase [ferredoxin] | cofit | 30 | 68 |
| | Pseudomonas fluorescens FW300-N1B4 | Pf1N1B4_5665 | | Sulfite reductase [NADPH] hemoprotein beta-component (EC 1.8.1.2) | strong | 25 | 81 |
| | Acinetobacter radioresistens SK82 | MPMX26_00614 | | Sulfite reductase [ferredoxin] | strong | 25 | 80 |
| | Pseudomonas putida KT2440 | PP_4829 | | putative precorrin-3B synthase | strong | 33 | 69 |
| | Pseudomonas stutzeri RCH2 | Psest_2089 | | Sulfite reductase, beta subunit (hemoprotein) | no data | 27 | 81 |
| | Pseudomonas sp. BP01 | JOY50_RS17575 | cobG | precorrin-3B synthase | strong | 30 | 69 |
| | Pseudomonas orientalis W4I3 | QF045_RS05930 | | precorrin-3B synthase | cofit | 30 | 68 |
| | Hydrogenophaga sp. GW460-11-11-14-LB1 | GFF4293 | | Sulfite reductase [NADPH] hemoprotein beta-component (EC 1.8.1.2) | strong | 28 | 80 |
| | Xanthobacter sp. DMC5 | GFF2389 | | Sulfite reductase [ferredoxin] | strong | 27 | 81 |
| | Pseudomonas fluorescens GW456-L13 | PfGW456L13_2843 | | Sulfite reductase [NADPH] hemoprotein beta-component (EC 1.8.1.2) | strong | 25 | 81 |
| | Pseudomonas sp. RS175 | PFR28_01366 | | Sulfite reductase [ferredoxin] | strong | 24 | 81 |
| | Rhizobium sp. OAE497 | ABIE40_RS09150 | | nitrite/sulfite reductase | strong | 28 | 80 |
| | Pseudomonas fluorescens FW300-N2E3 | AO353_22800 | | sulfite reductase | strong | 25 | 81 |
| | Acidovorax sp. GW101-3H11 | Ac3H11_577 | | Sulfite reductase [NADPH] hemoprotein beta-component (EC 1.8.1.2) | strong | 26 | 81 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS02975 | | precorrin-3B synthase | strong | 31 | 68 |
| | Pseudomonas fluorescens SBW25-INTG | PFLU_RS02975 | | precorrin-3B synthase | strong | 31 | 68 |
| | Pseudomonas sp. DMC3 | GFF3692 | | Sulfite reductase [ferredoxin] | strong | 24 | 81 |
| | Burkholderia phytofirmans PsJN | BPHYT_RS26680 | | oxidoreductase | insig. | 28 | 77 |
| | Sphingobium sp. HT1-2 | GFF1452 | | Sulfite reductase [NADPH] hemoprotein beta-component (EC 1.8.1.2) | no data | 26 | 79 |
| | Mucilaginibacter yixingensis YX-36 DSM 26809 | ABZR88_RS04955 | | HEPN domain-containing protein | no data | 26 | 78 |
| | Pseudomonas syringae pv. syringae B728a | Psyr_2462 | | Nitrite/sulfite reductase, hemoprotein beta-component, ferrodoxin-like:Nitrite and sulphite reductase 4Fe-4S region | strong | 25 | 81 |
| | Pseudomonas syringae pv. syringae B728a ΔmexB | Psyr_2462 | | Nitrite/sulfite reductase, hemoprotein beta-component, ferrodoxin-like:Nitrite and sulphite reductase 4Fe-4S region | strong | 25 | 81 |
| | Pseudomonas lactucae CFBP13502 | GEMAOFIL_02703 | | Sulfite reductase [ferredoxin] | strong | 25 | 81 |
| | Pseudomonas orientalis W4I3 | QF045_RS14830 | | nitrite/sulfite reductase | strong | 25 | 81 |
| | Sphingomonas koreensis DSMZ 15582 | Ga0059261_1498 | | Sulfite reductase, beta subunit (hemoprotein) | strong | 27 | 79 |
| | Pseudomonas simiae WCS417 | PS417_12290 | | sulfite reductase | strong | 24 | 81 |
| | Pseudomonas fluorescens SBW25 | PFLU_RS12980 | | nitrite/sulfite reductase | strong | 24 | 81 |