| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15597861 |
| Locus Tag | PA2665 |
| Description | Transcriptional activator of P. aeruginosa flavohemoglobin, FhpR |
| Strain | Pseudomonas protegens CHA0 |
| GI | 501682443 |
| Locus Tag | PFLCHA0_c50160 |
| Description | anaerobic nitric oxide reductase transcription regulator NorR |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644226 |
| Locus Tag | HCH_01373 |
| Description | anaerobic nitric oxide reductase transcriptional regulator |