| Strain | Pseudomonas syringae pv. tomato str. DC3000 |
| GI | 28869538 |
| Locus Tag | PSPTO_2340 |
| Description | 4-hydroxybenzoate transporter |
| Strain | Pseudomonas putida BIRD-1 |
| GI | 386013691 |
| Locus Tag | PPUBIRD1_4185 |
| Description | 4-hydroxybenzoate transporter |
| Strain | Azotobacter vinelandii CA6 |
| GI | 482898531 |
| Locus Tag | AvCA6_02690 |
| Description | 4-hydroxybenzoate transporter PcaK |