| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472325303 |
| Locus Tag | H681_10685 |
| Description | assimilatory nitrite reductase small subunit |
| Strain | Pseudomonas aeruginosa C3719 |
| GI | 254234874 |
| Locus Tag | PACG_00749 |
| Description | assimilatory nitrite reductase small subunit |
| Strain | Pseudomonas fluorescens Pf0-1 |
| GI | 77458007 |
| Locus Tag | Pfl01_1780 |
| Description | assimilatory nitrite reductase (NAD(P)H) small subunit |