| Strain | Pseudomonas stutzeri RCH2 |
| GI | 431928743 |
| Locus Tag | Psest_3669 |
| Description | Mg2+/Co2+ transport protein |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472323673 |
| Locus Tag | H681_02485 |
| Description | CO2+/MG2+ efflux protein ApaG |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83648740 |
| Locus Tag | HCH_06102 |
| Description | ApaG protein |