Cancer Protein Description

This report provides a detailed description of a selected cancer protein with information collected from various sources, including UniProt, the Wellcome Trust Sanger Institute’s Catalogue of Somatic Mutations in Cancer (COSMIC), and the Atlas of Genetics and Cytogenetics in Oncology and Haematology.


Protein Name: CTSB
Gene Name: CTSB
Protein Full Name: Cathepsin B
Alias: Amyloid precursor secretase; APP secretase; APPS; CATB; Cathepsin B1; CPSB; Cysteine protease; EC 3.4.22.1; Preprocathepsin B
Mass (Da): 37822
Number AA: 339
UniProt ID: P07858
Locus ID: 1508
COSMIC ID: CTSB
Gene location on chromosome: 8p23.1
Cancer protein type: OP
Effect of cancer mutation on protein: UNCLEAR
Effect of active protein on cancer: PROMOTES
Number of cancer specimens: 19625
Percent of cancer specimens with mutations: 0.22
Normal role description: Thiol protease which is believed to participate in intracellular degradation and turnover of proteins. Has also been implicated in tumour invasion and metastasis. This is mediated through abnormal localization of the protein to the cellular membrane or extracellular matrix and subsequent degredation of ECM components; this can potentially allow for easier tumour growth.


Provide the gene name, protein name, UniProt ID or Locus ID as a search term. Click on Retrieve Info button to obtain information on the selected cancer protein.