- Classes: Alpha and beta proteins (a+b)
- Folds: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase
- Superfamilies: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase
Families:
- 29
- 407
- 36
- 45
- 110
* Number of SCOP families of each Family