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Mouse CTSB Gene cDNA clone plasmid

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Mouse CTSB cDNA Clone Product Information
RefSeq ORF Size:1020bp
cDNA Description:Full length Clone DNA of Mus musculus cathepsin B.
Gene Synonym:Ctsb
Vector:pMD18-T Simple Vector
Restriction Site:
Tag Sequence:
Sequence Description:Identical with the Gene Bank Ref. ID sequence.
Sequencing primers:
Antibiotic in E.coli:
Antibiotic in mammalian cell:
Shipping_carrier:Each tube contains lyophilized plasmid.
Storage:The lyophilized plasmid can be stored at room temperature for three months.
pMD18-T Simple Vector Information

pMD18-T Simple Vector is a high-efficiency TA cloning vector constructed from pUC18, of which the initial multiple cloning sites (MCS) were destroyed. Thus the cDNA should be amplified by PCR with primers containing a restriction site for subclone. Competent cells appropriate for pUC18 are also appropriated for the Vector, e.g. JM109, DH5α, TOP10. The pMD18-T Simple Vector is 2.6kb in size. Selection of the plasmid in E. coli is conferred by the ampicillin resistance gene. The coding sequence was inserted by TA cloning at site 425.

pMD18-T Simple Usage Suggestion

The coding sequence can be amplified by PCR with M13-47 and RV-M primers.

Vector Sequence Download
Product nameProduct name

Cathepsin B is a papain-family cysteine protease that is normally located in lysosomes, where it is involved in the turnover of proteins and plays various roles in maintaining the normal metabolism of cells. This protease has been implicated in pathological conditions, e.g., tumor progression and arthritis. In disease conditions, increases in the expression of cathepsin B occur at both the gene and protein levels. Cathepsin B is synthesized as a preproenzyme and the primary pathways for its normal trafficking to the lysosome utilize mannose 6-phosphate receptors (MPRs). Mature cathepsin B has the ability to degrade several extracellular matrix components at both neutral and acidic pH and has been implicated in the progression of several human and rodent tumors progression and arthritis. Cathepsin B expression is increased in many human cancers at the mRNA, protein and activity levels. It is also frequently overexpressed in premalignant lesions, an observation that associates this protease with local invasive stages of cancer. Increased expression of cathepsin B in primary cancers, and especially in preneoplastic lesions, suggests that this enzyme might have pro-apoptotic features. Active cathepsin B is also secreted from tumours, a mechanism likely to be facilitated by lysosomal exocytosis or extracellular processing by surface activators. Cathepsin B is localized to caveolae on the tumour surface, where binding to the annexin II heterotetramer occurs. Thus CTSB is suggested as a tumor marker. Additionally, Cathepsin B can degrade extracellular matrix proteins, such as collagen IV and laminin, and can activate the precursor form of urokinase plasminogen activator (uPA), perhaps thereby initiating an extracellular proteolytic cascade.

  • Mai J, et al. (2000) Cell surface complex of cathepsin B/annexin II tetramer in malignant progression. Biochim Biophys Acta. 1477(1-2): 215-30.
  • Podgorski I, et al. (2003) Cathepsin B and its role(s) in cancer progression. Biochem Soc Symp. (70): 263-76.
  • Yan S, et al. (2003) Molecular regulation of human cathepsin B: implication in pathologies. Biol Chem. 384(6): 845-54.
  • Roshy S, et al. (2003) Pericellular cathepsin B and malignant progression. Cancer Metastasis Rev. 22(2-3): 271-86.

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    Catalog: MG50084-M
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