Superfamily: 2Fe-2S ferredoxin-like

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
4. Superfamily: 2Fe-2S ferredoxin-like

Families:

1. 2Fe-2S ferredoxin-related (14)
2. 2Fe-2S ferredoxin domains from multidomain proteins (9)