| Strain | Pseudomonas syringae pv. tomato str. DC3000 |
| GI | 28872418 |
| Locus Tag | PSPTO_5306 |
| Description | putrescine ABC transporter periplasmic putrescine-binding protein |
| Strain | Pseudomonas protegens CHA0 |
| GI | 501683285 |
| Locus Tag | PFLCHA0_c58790 |
| Description | putrescine-binding periplasmic protein PotF |
| Strain | Pseudomonas stutzeri CCUG 29243 |
| GI | 392423251 |
| Locus Tag | A458_21085 |
| Description | putrescine ABC transporter periplasmic putrescine-binding protein |