| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15597861 |
| Locus Tag | PA2665 |
| Description | Transcriptional activator of P. aeruginosa flavohemoglobin, FhpR |
| Strain | Pseudomonas putida BIRD-1 |
| GI | 386010466 |
| Locus Tag | PPUBIRD1_0853 |
| Description | Anaerobic nitric oxide reductase transcription regulator |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644226 |
| Locus Tag | HCH_01373 |
| Description | anaerobic nitric oxide reductase transcriptional regulator |