| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15599920 |
| Locus Tag | PA4726 |
| Description | two-component response regulator CbrB |
| Strain | Pseudomonas putida BIRD-1 |
| GI | 386013898 |
| Locus Tag | PPUBIRD1_4397 |
| Description | Putative two component, sigma54 specific, transcriptional regulator, Fis family |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83648897 |
| Locus Tag | HCH_06261 |
| Description | sigma 54-dependent transcriptional activator |