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Your Position: Home > Other Recombinant Proteins > Human CST4 /Cystatin-4 /Cystatin-S Protein

Human Cystatin S / CST4 Protein

  • Synonym
    CST4,Cystatin-4,Cystatin-S,Cystatin-S5,Cystatin-SA-III
  • Source
    Human Cystatin S, His Tag (CS4-H5223) is expressed from human 293 cells (HEK293). It contains AA Ser 21 - Ala 141 (Accession # AAH65714).
    Predicted N-terminus: Ser 21
  • Molecular Characterization
    Cystatin S(Ser 21 -  Ala 141 ) AAH65714

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

    The protein has a calculated MW of 15 kDa. The protein migrates as 15 kDa under reducing (R) condition (SDS-PAGE).

  • 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 25 mM MES, 150 mM NaCl, pH6.0. 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 Cystatin S, His Tag (Cat. No. CS4-H5223) SDS-PAGE gel

Human Cystatin 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%.

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