| Role | Gene | Name | |
|---|
| ATP-dependent helicase, DEAD/DEAH box family, associated with Flp pilus assembly | No genes | | |
| ATPase with chaperone activity, associated with Flp pilus assembly | No genes | | |
| Flp pilus assembly membrane protein TadE | No genes | | |
| Flp pilus assembly protein CpaD | No genes | | |
| Flp pilus assembly protein RcpB | No genes | | |
| Flp pilus assembly protein RcpC/CpaB | Psyr_4390 | | |
| Flp pilus assembly protein TadB | Psyr_4394 | | |
| Flp pilus assembly protein TadD, contains TPR repeat | No genes | | |
| Flp pilus assembly protein, pilin Flp | Psyr_4389 | | |
| Flp pilus assembly surface protein TadF, ATP/GTP-binding motif | No genes | | |
| Predicted ATPase with chaperone activity, associated with Flp pilus assembly | No genes | | |
| Protein TadG, associated with Flp pilus assembly | No genes | | |
| Similar to TadZ/CpaE, associated with Flp pilus assembly | No genes | | |
| Similar to secretin RcpA/CpaC, associated with Flp pilus assembly | No genes | | |
| Type II/IV secretion system ATP hydrolase TadA/VirB11/CpaF, TadA subfamily | Psyr_4393 | | |
| Type II/IV secretion system ATPase TadZ/CpaE, associated with Flp pilus assembly | No genes | | |
| Type II/IV secretion system protein TadC, associated with Flp pilus assembly | Psyr_4395 | | |
| Type II/IV secretion system secretin RcpA/CpaC, associated with Flp pilus assembly | Psyr_4391 | | |
| Type IV prepilin peptidase TadV/CpaA | No genes | | |
| Von Willebrand factor type A domain protein, associated with Flp pilus assembly | No genes | | |