Lineage for Protein: (Pro)cathepsin S

1. Root: SCOP 1.63

2. Class d: Alpha and beta proteins (a+b) [53931] (224 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] (9 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] (19 proteins)

6. Protein (Pro)cathepsin S [82566] (1 species)