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The protein encoded by this gene is a lysosomal cysteine proteinase and member of the peptidase C1 family. It exhibits both carboxy-monopeptidase and carboxy-dipeptidase activities. The encoded protein has also been known as cathepsin X and cathepsin P. This gene is expressed ubiquitously in cancer cell lines and primary tumors and, like other members of this family, may be involved in tumorigenesis.
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Protein Aliases: carboxypeptidase LB; cathepsin B2; cathepsin IV; Cathepsin P; Cathepsin X; cathepsin Y; Cathepsin Z; cathepsin Z1; cysteine-type carboxypeptidase; lysosomal carboxypeptidase B; preprocathepsin P
Gene Aliases: CTSX; CTSZ
UniProt ID: (Human) Q9UBR2
Entrez Gene ID: (Human) 1522
Molecular Function: cysteine protease
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