| Strain | Pseudomonas brassicacearum subsp. brassicacearum NFM421 |
| GI | 330812452 |
| Locus Tag | PSEBR_a5402 |
| Description | putrescine ABC transporter periplasmic protein |
| Strain | Pseudomonas protegens CHA0 |
| GI | 501683285 |
| Locus Tag | PFLCHA0_c58790 |
| Description | putrescine-binding periplasmic protein PotF |
| Strain | Pseudomonas putida HB3267 |
| GI | 431805015 |
| Locus Tag | B479_25430 |
| Description | extracellular solute-binding protein |