| Strain | Pseudomonas fluorescens F113 |
| GI | 378948431 |
| Locus Tag | PSF113_0486 |
| Description | protein KefA |
| Strain | Pseudomonas putida BIRD-1 |
| GI | 386014337 |
| Locus Tag | PPUBIRD1_4856 |
| Description | Potassium efflux system kefA |
| Strain | Pseudomonas aeruginosa 2192 |
| GI | 254244094 |
| Locus Tag | PA2G_04930 |
| Description | conserved hypothetical protein |