Fold: C2 domain-like

sandwich; 8 strands in 2 sheets; greek-key

Lineage:

1. Root: scop
2. Class: All beta proteins
3. Fold: C2 domain-like
   sandwich; 8 strands in 2 sheets; greek-key

Superfamilies:

1. C2 domain (Calcium/lipid-binding domain, CaLB) (2)
   two constituent families are related by circular permutation
2. Periplasmic chaperone C-domain (1)
3. PHL pollen allergen (1)
4. Rab geranylgeranyltransferase alpha-subunit, insert domain (1)