| Strain | Pseudomonas aeruginosa PA7 |
| GI | 152986727 |
| Locus Tag | PSPA7_5442 |
| Description | two-component sensor CbrA |
| Strain | Pseudomonas putida NBRC 14164 |
| GI | 512687731 |
| Locus Tag | PP4_46740 |
| Description | two-component histidine kinase CbrA |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83648896 |
| Locus Tag | HCH_06259 |
| Description | Na+/proline symporter |