| Strain | Pseudomonas stutzeri DSM 10701 |
| GI | 397687908 |
| Locus Tag | PSJM300_14035 |
| Description | monovalent cation/H+ antiporter subunit A |
| Strain | Pseudomonas protegens CHA0 |
| GI | 501680127 |
| Locus Tag | PFLCHA0_c26780 |
| Description | putative K(+)/H(+) antiporter subunit A/B |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83643689 |
| Locus Tag | HCH_00804 |
| Description | putative monovalent cation/H+ antiporter subunit A |