| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15596296 |
| Locus Tag | PA1099 |
| Description | two-component response regulator |
| Strain | Pseudomonas putida HB3267 |
| GI | 431803675 |
| Locus Tag | B479_18715 |
| Description | Two component, sigma54 specific, Fis family transcriptional regulator |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83647863 |
| Locus Tag | HCH_05196 |
| Description | sigma 54-dependent transcriptional activator |