Fold: Prealbumin-like

sandwich; 7 strands in 2 sheets, greek-key
variations: some members have additional 1-2 strands to common fold

Lineage:

1. Root: scop
2. Class: All beta proteins
3. Fold: Prealbumin-like
   sandwich; 7 strands in 2 sheets, greek-key
   variations: some members have additional 1-2 strands to common fold

Superfamilies:

1. Starch-binding domain (1)
2. Carboxypeptidase D, a regulatory domain (1)
3. VHL (1)
4. Transthyretin (synonym: prealbumin) (1)
5. B repeat unit of collagen binding surface protein (cna) (1)
6. Aromatic compound dioxygenase (1)