Fold: Triple beta-spiral

trimer formed by the interlocking beta-hairpin repeat units

Lineage:

1. Root: scop
2. Class: All beta proteins
3. Fold: Triple beta-spiral
   trimer formed by the interlocking beta-hairpin repeat units

Superfamilies:

1. Fibre shaft of virus attachment proteins (2)
   1. Adenovirus (1)
   2. Reovirus attachment protein sigma 1 (1)