| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15596655 |
| Locus Tag | PA1458 |
| Description | probable two-component sensor |
| Strain | Pseudomonas putida W619 |
| GI | 170722827 |
| Locus Tag | PputW619_3664 |
| Description | CheA signal transduction histidine kinase |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83647836 |
| Locus Tag | HCH_05168 |
| Description | chemotaxis protein histidine kinase-like kinase |