Lineage for Species: Papaya (Carica papaya)

1. Root: SCOP 1.69

2. Class d: Alpha and beta proteins (a+b) [53931] (279 folds)

3. Fold d.3: Cysteine proteinases [54000] (1 superfamily) consists of one alpha-helix and 4 strands of antiparallel beta-sheet and contains the catalytic triad Cys-His-Asn

4. Superfamily d.3.1: Cysteine proteinases [54001] (11 families) the constitute families differ by insertion into and circular permutation of the common catalytic core made of one alpha-helix and 3-strands of beta-sheet

5. Family d.3.1.1: Papain-like [54002] (23 proteins)

6. Protein Chymopapain [54009] (1 species)

7. Species Papaya (Carica papaya) [TaxId:3649] [54010] (1 PDB entry)