| Strain | Pseudomonas aeruginosa M18 |
| GI | 386060050 |
| Locus Tag | PAM18_3989 |
| Description | putative monovalent cation/H+ antiporter subunit C |
| Strain | Pseudomonas resinovorans NBRC 106553 |
| GI | 512617258 |
| Locus Tag | PCA10_16050 |
| Description | Na(+)/H(+) antiporter subunit C |
| Strain | Pseudomonas syringae pv. tomato str. DC3000 |
| GI | 28870633 |
| Locus Tag | PSPTO_3472 |
| Description | potassium efflux system protein PhaC |