| Strain | Pseudomonas syringae pv. tomato str. DC3000 |
| GI | 28869160 |
| Locus Tag | PSPTO_1956 |
| Description | sigma-54 dependent transcriptional regulator/response regulator FleR |
| 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 |