| Strain | Pseudomonas aeruginosa LESB58 |
| GI | 218892937 |
| Locus Tag | PALES_42221 |
| Description | two-component response regulator |
| Strain | Pseudomonas putida BIRD-1 |
| GI | 386011088 |
| Locus Tag | PPUBIRD1_1488 |
| 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 |