| Strain | Pseudomonas stutzeri RCH2 |
| GI | 431928788 |
| Locus Tag | Psest_3715 |
| Description | type IV pilus secretin PilQ/competence protein |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472327684 |
| Locus Tag | H681_22615 |
| Description | type 4 fimbrial biogenesis outer membrane protein PilQ precursor |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83648610 |
| Locus Tag | HCH_05969 |
| Description | type 4 fimbrial biogenesis protein PilQ |