Root: scop

Classes:

1. All alpha proteins [46456] (5)
   1. DNA/RNA-binding 3-helical bundle [46688] (1)
   2. Histone-fold [47112] (1)
   3. Four-helical up-and-down bundle [47161] (1)
   4. Bromodomain-like [47363] (1)
   5. EF Hand-like [47472] (1)
2. All beta proteins [48724] (5)
   1. Immunoglobulin-like beta-sandwich [48725] (1)
   2. Concanavalin A-like lectins/glucanases [49898] (1)
   3. PDZ domain-like [50155] (1)
   4. OB-fold [50198] (1)
   5. beta-clip [51268] (1)
3. Alpha and beta proteins (a/b) [51349] (9)
   Mainly parallel beta sheets (beta-alpha-beta units)
   1. TIM beta/alpha-barrel [51350] (1)
   2. ClpP/crotonase [52095] (1)
   3. P-loop containing nucleotide triphosphate hydrolases [52539] (1)
   4. Thioredoxin fold [52832] (1)
   5. Ribonuclease H-like motif [53066] (1)
   6. Molybdenum cofactor biosynthesis proteins [53217] (1)
   7. S-adenosyl-L-methionine-dependent methyltransferases [53334] (1)
   8. Nucleotide-diphospho-sugar transferases [53447] (1)
   9. PEP carboxykinase-like [53794] (1)
4. Alpha and beta proteins (a+b) [53931] (3)
   Mainly antiparallel beta sheets (segregated alpha and beta regions)
   1. His-Me finger endonucleases [54059] (1)
   2. KH-domain [54790] (1)
   3. Fibrinogen C-terminal domains [56495] (1)
5. Multi-domain proteins (alpha and beta) [56572] (2)
   Folds consisting of two or more domains belonging to different classes
   1. Ku heterodimer subunits [64500] (1)
   2. HAD-like [56783] (1)
6. Membrane and cell surface proteins and peptides [56835] (0)
   Does not include proteins in the immune system
7. Small proteins [56992] (0)
   Usually dominated by metal ligand, heme, and/or disulfide bridges
8. Coiled coil proteins [57942] (0)
   Not a true class
9. Low resolution protein structures [58117] (0)
   Not a true class
10. Peptides [58231] (0)
    Peptides and fragments. Not a true class
11. Designed proteins [58788] (0)
    Experimental structures of proteins with essentially non-natural sequences. Not a true class
12. Non-protein [0] (0)
    PDB entries which are theoretical models, nucleic acids, or other non-proteins