| Strain | Pseudomonas mendocina NK-01 |
| GI | 330504173 |
| Locus Tag | MDS_3259 |
| Description | periplasmic nitrate reductase subunit NapB |
| Strain | Pseudomonas stutzeri CCUG 29243 |
| GI | 392420474 |
| Locus Tag | A458_07045 |
| Description | periplasmic nitrate reductase b subunit |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83646108 |
| Locus Tag | HCH_03366 |
| Description | nitrate reductase cytochrome c-type subunit |