| Strain | Pseudomonas aeruginosa PA7 |
| GI | 152985286 |
| Locus Tag | PSPA7_6313 |
| Description | putative two-component response regulator |
| Strain | Pseudomonas fluorescens F113 |
| GI | 378952556 |
| Locus Tag | PSF113_4660 |
| Description | sigma-54 dependent DNA-binding response regulator |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83643805 |
| Locus Tag | HCH_00925 |
| Description | sigma 54-dependent transcriptional activator |