| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15597994 |
| Locus Tag | PA2798 |
| Description | probable two-component response regulator |
| Strain | Pseudomonas fluorescens SBW25 |
| GI | 229589105 |
| Locus Tag | PFLU1583 |
| Description | putative response regulator |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83645535 |
| Locus Tag | HCH_02761 |
| Description | serine phosphatase RsbU, regulator of sigma subunit |