| AD families | AD genes | Defense system | CLAN ID | Phages/MGEs | References | Description |
|---|---|---|---|---|---|---|
| APIS108 | ardc | restriction-modification (RM) | CLAN046 | Enterobacterales | PMID:10686096 | This anti-restriction protein is able in vitro to protect the single-stranded DNA against the activity of type II restriction endonuclease HhaI. |