| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15599722 |
| Locus Tag | PA4526 |
| Description | type 4 fimbrial biogenesis protein PilB |
| Strain | Pseudomonas brassicacearum subsp. brassicacearum NFM421 |
| GI | 330811787 |
| Locus Tag | PSEBR_a4826 |
| Description | type 4 fimbrial assembly protein |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83647942 |
| Locus Tag | HCH_05278 |
| Description | type II secretory pathway ATPase PulE/Tfp pilus assembly pathway ATPase PilB |