| Strain | Pseudomonas mendocina ymp |
| GI | 146307849 |
| Locus Tag | Pmen_2827 |
| Description | two component sigma-54 specific Fis family transcriptional regulator |
| Strain | Pseudomonas aeruginosa LESB58 |
| GI | 218892937 |
| Locus Tag | PALES_42221 |
| Description | two-component response regulator |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83647863 |
| Locus Tag | HCH_05196 |
| Description | sigma 54-dependent transcriptional activator |