CATH Classification

Domain Context

CATH Clusters

Superfamily Cysteine proteinases
Functional Family Cathepsin B

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.
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