Cathepsin B

**Semantic type:** Amino Acid, Peptide, or Protein|Enzyme

**Definition:** Cathepsin B (339 aa, ~38 kDa) is encoded by the human CTSB gene. This protein plays a role in proteolysis, immunity and the regulation of apoptosis.

**Synonyms:** - APP Secretase - APPS - Amyloid Precursor Protein Secretase - CTSB - Cathepsin B1 - EC 3.4.22.1 - Preprocathepsin B