CTSB
Summary: This gene encodes a member of the C1 family of peptidases. Alternative splicing of this gene results in multiple transcript variants. At least one of these variants encodes a preproprotein that is proteolytically processed to generate multiple protein products. These products include the cathepsin B light and heavy chains, which can dimerize to form the double chain form of the enzyme. This enzyme is a lysosomal cysteine protease with both endopeptidase and exopeptidase activity that may play a role in protein turnover. It is also known as amyloid precursor protein secretase and is involved in the proteolytic processing of amyloid precursor protein (APP). Incomplete proteolytic processing of APP has been suggested to be a causative factor in Alzheimer's disease, the most common cause of dementia. Overexpression of the encoded protein has been associated with esophageal adenocarcinoma and other tumors. Multiple pseudogenes of this gene have been identified. [provided by RefSeq, Nov 2015].
Name | OMIM ID | Ensembl ID | HGNC ID | PHARMGKB ID | Map Location |
---|---|---|---|---|---|
Namecathepsin B OMIM IDMIM:116810 Ensembl IDEnsembl:ENSG00000164733 HGNC IDHGNC:HGNC:2527 PHARMGKB IDPA27027 Map Location8p23.1 |
GO terms in CTSB
Term Type | Evidence Type | GO Term ID | GO Des. |
---|---|---|---|
MF | IBA | GO:0004197 | cysteine-type endopeptidase activity |
MF | IDA | GO:0004197 | cysteine-type endopeptidase activity |
MF | TAS | GO:0004252 | serine-type endopeptidase activity |
MF | IPI | GO:0005515 | protein binding |
MF | IDA | GO:0005518 | collagen binding |
MF | IDA | GO:0008233 | peptidase activity |
Gene expression in normal tissue: CTSB
Gene-model tissue-cancer distribution: Bubble Plot
Gene-drug pathway distribution
Pathways in CTSB
Database | Pathway ID | Pathway Des. |
---|---|---|
reactome | R-HSA-1280218 | Adaptive Immune System |
reactome | R-HSA-1442490 | Collagen degradation |
reactome | R-HSA-1474228 | Degradation of the extracellular matrix |
reactome | R-HSA-1474244 | Extracellular matrix organization |
reactome | R-HSA-1474290 | Collagen formation |
reactome | R-HSA-1679131 | Trafficking and processing of endosomal TLR |
Gene-Drug: Aster Plot
Drug ID | Drug Name | Model Num. |
---|---|---|
iGMDRD353 | PD0325901 | 2 |
Gene in drug-gene network: Network Plot

Gene-drug targets distribution
Gene Structure: PDB
Models in CTSB
Model | Level | Reference ID | Tissue | Cancer | Drug | Clinical Response | Source | |
---|---|---|---|---|---|---|---|---|
No matching records found |