| Strain | Pseudomonas aeruginosa UCBPP-PA14 |
| GI | 116054144 |
| Locus Tag | PA14_05390 |
| Description | ChpA |
| Strain | Pseudomonas putida NBRC 14164 |
| GI | 512688112 |
| Locus Tag | PP4_50550 |
| Description | putative chemosensory signal transduction system protein ChpA |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83643436 |
| Locus Tag | HCH_00541 |
| Description | chemotaxis protein histidine kinase-like kinase |