External Resource: Annotation
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
| A | DNA_topoisoIV | e8pnhA1 | A: beta barrels | X: cradle loop barrel | H: RIFT-related | T: acid protease | F: DNA_topoisoIV | ECOD (v294.2) |