| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15597861 |
| Locus Tag | PA2665 |
| Description | Transcriptional activator of P. aeruginosa flavohemoglobin, FhpR |
| Strain | Pseudomonas fulva 12-X |
| GI | 333898422 |
| Locus Tag | Psefu_0215 |
| Description | Fis family transcriptional regulator |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644226 |
| Locus Tag | HCH_01373 |
| Description | anaerobic nitric oxide reductase transcriptional regulator |