| Strain | Pseudomonas aeruginosa UCBPP-PA14 |
| GI | 116049104 |
| Locus Tag | PA14_49270 |
| Description | cytochrome c-type protein NapC |
| Strain | Pseudomonas fulva 12-X |
| GI | 333901125 |
| Locus Tag | Psefu_2940 |
| Description | periplasmic nitrate (or nitrite) reductase c-type cytochrome |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83646109 |
| Locus Tag | HCH_03367 |
| Description | nitrate/TMAO reductases, membrane-bound tetraheme cytochrome subunit C |