| AD families | AD genes | Defense system | CLAN ID | Phages/MGEs | References | Description |
|---|---|---|---|---|---|---|
| APIS009 | Ral | restriction-modification (RM) | CLAN013 | Lambda of E. coli | PMID:3023633 | Ral of phage λ can activate the activity of the MTase and thereby accelerate protection of the phage DNA. |