Fold: beta-Grasp (ubiquitin-like)

core: beta(2)-alpha-beta(2); mixed beta-sheet 2143

Lineage:

1. Root: scop
2. Class: Alpha and beta proteins (a+b)
   Mainly antiparallel beta sheets (segregated alpha and beta regions)
3. Fold: beta-Grasp (ubiquitin-like)
   core: beta(2)-alpha-beta(2); mixed beta-sheet 2143

Superfamilies:

1. Ubiquitin-like (5)
2. CAD domain (1)
   possibly related to the ubiquitin-like superfamily
3. MoaD/ThiS (2)
   possible link between the ubiquitin-like and 2Fe-2S ferredoxin-like superfamilies
4. 2Fe-2S ferredoxin-like (2)
5. Staphylokinase/streptokinase (1)
6. Superantigen toxins, C-terminal domain (1)
7. Immunoglobulin-binding domains (1)
8. Translation initiation factor IF3, N-terminal domain (1)
9. Glutamine synthetase, N-terminal domain (1)