4 component system: The ATP-binding Cassette (ABC) Superfamily
| Q8ZPK4 | ABC-type proline/glycine betaine transport system |
|---|---|
| Q8ZPK3 | Putative binding-protein-dependent transport system |
| Q8ZPK2 | Putative periplasmic component |
| Q8ZPK1 | ABC-type transport system protein |