| Strain | Pseudomonas entomophila L48 |
| GI | 104782449 |
| Locus Tag | PSEEN3407 |
| Description | ferredoxin-nitrite reductase |
| Strain | Pseudomonas putida GB-1 |
| GI | 167032986 |
| Locus Tag | PputGB1_1978 |
| Description | sulfite reductase (ferredoxin) |
| Strain | Pseudomonas fluorescens Pf0-1 |
| GI | 77459334 |
| Locus Tag | Pfl01_3112 |
| Description | nitrite and sulfite reductase 4Fe-4S region |