CATH Classification

Domain Context

CATH Clusters

Superfamily 1.20.5.170
Functional Family

Enzyme Information

3.4.22.1
Cathepsin B.
based on mapping to UniProt P07858
Hydrolysis of proteins with broad specificity for peptide bonds. Preferentially cleaves -Arg-Arg-|-Xaa bonds in small molecule substrates (thus differing from cathepsin L). In addition to being an endopeptidase, shows peptidyl-dipeptidase activity, liberating C-terminal dipeptides.
-!- An intracellular (lysosomal) enzyme. -!- Belongs to peptidase family C1.

UniProtKB Entries (1)

P07858
CATB_HUMAN
Homo sapiens
Cathepsin B

PDB Structure

PDB 1HUC
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
The refined 2.15 A X-ray crystal structure of human liver cathepsin B: the structural basis for its specificity.
Musil, D., Zucic, D., Turk, D., Engh, R.A., Mayr, I., Huber, R., Popovic, T., Turk, V., Towatari, T., Katunuma, N., Bode, W.
EMBO J.