| Strain | Pseudomonas putida KT2440 |
| GI | 26991856 |
| Locus Tag | PP_5180 |
| Description | spermidine/putrescine ABC transporter substrate-binding protein |
| Strain | Pseudomonas protegens CHA0 |
| GI | 501683285 |
| Locus Tag | PFLCHA0_c58790 |
| Description | putrescine-binding periplasmic protein PotF |
| Strain | Pseudomonas stutzeri RCH2 |
| GI | 431929348 |
| Locus Tag | Psest_4283 |
| Description | spermidine/putrescine-binding periplasmic protein |