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Rat Cathepsin S / CTSS Protein (His Tag)

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Rat Ctss Protein Product Information
Synonym:Cathepsin S, CTSS
Protein Construction:A DNA sequence encoding the rat Ctss (Met1-Ile318) was expressed with a polyhistidine tag at the C-terminus.
Expressed Host:Human Cells
Shipping:In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Rat Ctss Protein QC Testing
Purity:> 90 % as determined by SDS-PAGE.
Endotoxin:< 1.0 EU per μg protein as determined by the LAL method.
Stability:Samples are stable for up to twelve months from date of receipt at -70℃
Predicted N Terminal:Met
Molecule Mass:The recombinant rat Ctss consists 329 amino acids and predicts a molecular mass of 37.3 kDa.
Formulation:Lyophilized from sterile PBS, pH 7.4.
1. Normally 5 % - 8 % trehalose and mannitol are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
2. Please contact us for any concerns or special requirements.
Rat Ctss Protein Usage Guide
Storage:Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Reconstitution:A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
Rat Ctss Protein SDS-PAGE
Rat Cathepsin S / CTSS Protein (His Tag)
Other Ctss Recombinant Protein Products
Cathepsin S/CTSS Background

Cathepsin S (CTSS), one of the lysosomal proteinases, has many important physiological functions in the nervous system, especially in process of extracellular matrix degradation and endocellular antigen presentation. CTSS is synthesized as inactive precursor of 331 amino acids consisting of a 15-aa signal peptide, a propeptide of 99 aa, and a mature polypeptide of 217 aa. It is activated in the lysosomes by a proteolytic cleavage of the propeptide. Cathepsin S is expressed in the lysosome of antigen presenting cells, primarily dendritic cells, B-cells and macrophages. Compared with other lysosomal cysteine proteases, cathepsin S has displayed some unique characteristics. Cathepsin S is most well known for its critical function in the proteolytic digestion of the invariant chain chaperone molecules, thus controlling antigen presentation to CD4+ T-cells by major histocompatibility complex (MHC) class II molecules or to NK1.1+ T-cells via CD1 molecules. Cathepsin S also appears to participate in direct processing of exogenous antigens for presentation by MHC class II to CD4+ T-cells, or in cross-presentation by MHC class I molecules to CD8+ T-cells. In addition, although direct evidence is still lacking, in its secreted form cathepsin S is implicated in degradation of the extracellular matrix, which may contribute to the pathology of a number of diseases, including arthritis, atherosclerosis, neurological diseases and chronic obstructive pulmonary disease.

Rat Cathepsin S/CTSS References
  • Liu W, et al. (2004) Cysteine protease cathepsin S as a key step in antigen presentation. Drug News Perspect. 17(6): 357-63.
  • Thurmond RL, et al. (2005) Cathepsin S inhibitors as novel immunomodulators. Curr Opin Investig Drugs. 6(5): 473-82.
  • Wang DM, et al. (2008) Cathepsin S in pathogenesis of neurological diseases. Zhejiang Da Xue Xue Bao Yi Xue Ban. 37(4): 422-6.
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    Catalog: 80443-R08H-10
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