| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15595552 |
| Locus Tag | PA0355 |
| Description | protease PfpI |
| Strain | Pseudomonas stutzeri ATCC 17588 = LMG 11199 |
| GI | 339496046 |
| Locus Tag | PSTAB_3969 |
| Description | protease PfpI |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83645817 |
| Locus Tag | HCH_03061 |
| Description | putative intracellular protease/amidase |