| Strain | Pseudomonas aeruginosa UCBPP-PA14 |
| GI | 116054083 |
| Locus Tag | PA14_04650 |
| Description | protease PfpI |
| Strain | Pseudomonas stutzeri RCH2 |
| GI | 431925444 |
| Locus Tag | Psest_0237 |
| Description | Pfpi family intracellular protease |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83645817 |
| Locus Tag | HCH_03061 |
| Description | putative intracellular protease/amidase |