| Strain | Pseudomonas mendocina ymp |
| GI | 146305384 |
| Locus Tag | Pmen_0344 |
| Description | extracellular solute-binding protein |
| Strain | Pseudomonas stutzeri DSM 4166 |
| GI | 386018709 |
| Locus Tag | PSTAA_0069 |
| Description | putrescine ABC transporter periplasmic putrescine-binding protein |
| Strain | Pseudomonas fluorescens SBW25 |
| GI | 229593215 |
| Locus Tag | PFLU5845 |
| Description | putrescine ABC transporter substrate-binding periplasmic protein |