| Strain | Pseudomonas aeruginosa UCBPP-PA14 |
| GI | 116049028 |
| Locus Tag | PA14_50180 |
| Description | two-component response regulator |
| Strain | Pseudomonas fluorescens A506 |
| GI | 387894892 |
| Locus Tag | PflA506_3747 |
| Description | sigma-54 dependent DNA-binding response regulator FleR |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83647863 |
| Locus Tag | HCH_05196 |
| Description | sigma 54-dependent transcriptional activator |