| Strain | Pseudomonas syringae pv. tomato str. DC3000 |
| GI | 28870636 |
| Locus Tag | PSPTO_3475 |
| Description | potassium efflux system protein PhaF |
| Strain | Pseudomonas putida BIRD-1 |
| GI | 386012951 |
| Locus Tag | PPUBIRD1_3428 |
| Description | Putative monovalent cation/H+ antiporter subunit F |
| Strain | Azotobacter vinelandii CA6 |
| GI | 482898876 |
| Locus Tag | AvCA6_19570 |
| Description | sodium hydrogen antiporter subunitF, ShaF |