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Your Position: Home > Enzymes > Human Cathepsin S /CTSS Protein

Human Cathepsin S / CTSS Protein

  • Synonym
    CTSS,Cathepsin S
  • Source
    Human Cathepsin S, His Tag (CTS-H5224) is expressed from human 293 cells (HEK293). It contains AA Gln 17 - Ile 331 (pro) & Ser 109 - Ile 331 (mature) (Accession # NP_004070).
    Predicted N-terminus: Gln 17 (pro) & Ser 109 (mature)
  • Molecular Characterization
    Cathepsin S(Gln 17 - Ile 331 (pro) & Ser 109 - Ile 331 (mature)) NP_004070

    This protein carries a polyhistidine tag at the C-terminus.

    The protein has a calculated MW of 36.6 kDa. The protein migrates as 37 kDa (pro) and 26 kDa (mature) under reducing (R) condition (SDS-PAGE) due to glycosylation.

  • Endotoxin
    Less than 1.0 EU per μg by the LAL method.
  • Purity

    >95% as determined by SDS-PAGE.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in 50 mM MES, 100 mM NaCl, pH6.5. Normally trehalose is added as protectant before lyophilization.

    Contact us for customized product form or formulation.

  • Reconstitution

    Please see Certificate of Analysis for specific instructions.

    For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

  • Storage

    For long term storage, the product should be stored at lyophilized state at -20°C or lower.

    Please avoid repeated freeze-thaw cycles.

    No activity loss is observed after storage at:

    1. 4-8°C for 12 months in lyophilized state;
    2. -70°C for 3 months under sterile conditions after reconstitution.
SDS-PAGE
Human Cathepsin S, His Tag (Cat. No. CTS-H5224) SDS-PAGE gel

Human Cathepsin S, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.

  • Background
    Cathepsin S is also known as CTSS, which is a member of the peptidase C1 family. Cathepsin S is a lysosomal cysteine protease that may participate in the degradation of antigenic proteins to peptides for presentation on MHC class II molecules. Cathepsin S can function as an elastase over a broad pH range in alveolar macrophages. The catalytic activity of cathepsin S is similar to cathepsin L, but with much less activity on Z-Phe-Arg-|-NHMec, and more activity on the Z-Val-Val-Arg-|-Xaa compound.
  • References
  • Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.

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