| Strain | Pseudomonas syringae pv. syringae B728a |
| GI | 66048089 |
| Locus Tag | Psyr_4865 |
| Description | extracellular solute-binding protein |
| Strain | Pseudomonas putida NBRC 14164 |
| GI | 512688310 |
| Locus Tag | PP4_52530 |
| Description | polyamine ABC transporter substrate-binding protein SpuD |
| Strain | Azotobacter vinelandii CA6 |
| GI | 482898609 |
| Locus Tag | AvCA6_48760 |
| Description | Polyamine transporter periplasmic protein PotF |