| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15596296 |
| Locus Tag | PA1099 |
| Description | two-component response regulator |
| Strain | Pseudomonas mendocina NK-01 |
| GI | 330502761 |
| Locus Tag | MDS_1847 |
| Description | two component, sigma-54 specific, transcriptional regulator, Fis family |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83647863 |
| Locus Tag | HCH_05196 |
| Description | sigma 54-dependent transcriptional activator |