Fold: Phosphotyrosine protein phosphatases I-like

3 layers: a/b/a; parallel beta-sheet of 4 strands, order 2134

Lineage:

1. Root: scop
2. Class: Alpha and beta proteins (a/b)
   Mainly parallel beta sheets (beta-alpha-beta units)
3. Fold: Phosphotyrosine protein phosphatases I-like
   3 layers: a/b/a; parallel beta-sheet of 4 strands, order 2134

Superfamilies:

1. Phosphotyrosine protein phosphatases I (1)
   share the common active site structure with the family II
2. Enzyme IIB-cellobiose (1)