Root: scop

Classes:

1. All alpha proteins [46456] (202)
2. All beta proteins [48724] (141)
3. Alpha and beta proteins (a/b) [51349] (130)
   Mainly parallel beta sheets (beta-alpha-beta units)
4. Alpha and beta proteins (a+b) [53931] (260)
   Mainly antiparallel beta sheets (segregated alpha and beta regions)
5. Multi-domain proteins (alpha and beta) [56572] (40)
   Folds consisting of two or more domains belonging to different classes
6. Membrane and cell surface proteins and peptides [56835] (42)
   Does not include proteins in the immune system
7. Small proteins [56992] (72)
   Usually dominated by metal ligand, heme, and/or disulfide bridges
8. Coiled coil proteins [57942] (6)
   Not a true class
9. Low resolution protein structures [58117] (22)
   Not a true class
10. Peptides [58231] (111)
    Peptides and fragments. Not a true class
11. Designed proteins [58788] (41)
    Experimental structures of proteins with essentially non-natural sequences. Not a true class