| Strain | Pseudomonas fulva 12-X |
| GI | 333898630 |
| Locus Tag | Psefu_0426 |
| Description | type IV pilus secretin PilQ |
| 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 |