Fold: CI-2 family of serine protease inhibitors

alpha+beta sandwich; loop across free side of beta-sheet

Lineage:

1. Root: scop
2. Class: Alpha and beta proteins (a+b)
   Mainly antiparallel beta sheets (segregated alpha and beta regions)
3. Fold: CI-2 family of serine protease inhibitors
   alpha+beta sandwich; loop across free side of beta-sheet

Superfamilies:

1. CI-2 family of serine protease inhibitors (1)
   1. CI-2 family of serine protease inhibitors (4)
      1. Eglin C
         1. Leech (Hirudo medicinalis) (11)
      2. Chymotrypsin inhibitor CI-2
         1. Barley (Hordeum vulgare) (10)
      3. Trypsin inhibitor V
         1. Pumpkin (Cucurbita maxima) (3)
      4. Trypsin inhibitor LUTI
         1. Flax (Linum usitatissimum) (1)