| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15599724 |
| Locus Tag | PA4528 |
| Description | type 4 prepilin peptidase PilD |
| Strain | Pseudomonas syringae pv. phaseolicola 1448A |
| GI | 71735543 |
| Locus Tag | PSPPH_0818 |
| Description | type IV pilus prepilin peptidase PilD |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83647944 |
| Locus Tag | HCH_05280 |
| Description | type II secretory pathway prepilin signal peptidase PulO and related peptidase |