| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15596977 |
| Locus Tag | PA1780 |
| Description | assimilatory nitrite reductase small subunit |
| Strain | Pseudomonas sp. UW4 |
| GI | 426410541 |
| Locus Tag | PputUW4_03643 |
| Description | assimilatory nitrite reductase small subunit |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83648462 |
| Locus Tag | HCH_05822 |
| Description | ferredoxin subunit of nitrite reductase and ring-hydroxylating dioxygenases |