| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15600273 |
| Locus Tag | PA5080 |
| Description | prolyl aminopeptidase |
| Strain | Pseudomonas resinovorans NBRC 106553 |
| GI | 512620951 |
| Locus Tag | PCA10_52980 |
| Description | proline iminopeptidase |
| Strain | Pseudomonas syringae pv. tomato str. DC3000 |
| GI | 28872276 |
| Locus Tag | PSPTO_5164 |
| Description | proline iminopeptidase |