| Strain | Pseudomonas entomophila L48 |
| GI | 104783969 |
| Locus Tag | PSEEN5051 |
| Description | sensor histidine kinase/response regulator ChpA |
| Strain | Pseudomonas putida NBRC 14164 |
| GI | 512688112 |
| Locus Tag | PP4_50550 |
| Description | putative chemosensory signal transduction system protein ChpA |
| Strain | Pseudomonas fluorescens Pf0-1 |
| GI | 77461525 |
| Locus Tag | Pfl01_5304 |
| Description | CheA Signal transduction histidine kinase (STHK) |