| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15595552 |
| Locus Tag | PA0355 |
| Description | protease PfpI |
| Strain | Pseudomonas putida BIRD-1 |
| GI | 386012489 |
| Locus Tag | PPUBIRD1_2949 |
| Description | PfpI |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83645817 |
| Locus Tag | HCH_03061 |
| Description | putative intracellular protease/amidase |