Aliases for CTSB Gene
External Ids for CTSB Gene
Previous GeneCards Identifiers for CTSB Gene
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. Cathepsin B is involved in the cleavage of the SARS-COV-2 spike protein upon entry to the human host cell. [provided by RefSeq, Jun 2020]
GeneCards Summary for CTSB Gene
CTSB (Cathepsin B) is a Protein Coding gene. Diseases associated with CTSB include Keratolytic Winter Erythema and Annular Erythema. Among its related pathways are Neuroscience and Lysosome. Gene Ontology (GO) annotations related to this gene include peptidase activity and cysteine-type peptidase activity. An important paralog of this gene is CTSC.
UniProtKB/Swiss-Prot Summary for CTSB Gene
Thiol protease which is believed to participate in intracellular degradation and turnover of proteins (PubMed:12220505). Cleaves matrix extracellular phosphoglycoprotein MEPE (PubMed:12220505). Involved in the solubilization of cross-linked TG/thyroglobulin in the thyroid follicle lumen (By similarity). Has also been implicated in tumor invasion and metastasis (PubMed:3972105).