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Your Position: Home > Cytokines > IL-21 > Biotinylated Human IL-21 Protein, Fc,Avitag

Biotinylated Human IL-21 Protein, Fc,Avitag™

  • Synonym
    IL21,Za11,Interleukin-21
  • Source
    Biotinylated Human IL-21, Fc,Avitag (IL1-H82F7) is expressed from human 293 cells (HEK293). It contains AA Gln 23 - Ser 155 (Accession # Q9HBE4-1).
    Predicted N-terminus: Gln 23
  • Molecular Characterization
    Online(Gln 23 - Ser 155) Q9HBE4-1

    This protein carries a human IgG1 Fc tag at the C-terminus, followed by a Avi tag (Avitag™).

    The protein has a calculated MW of 43.9 kDa. The protein migrates as 36 kDa and 48-50 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

  • Biotinylation
    Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
  • Biotin:Protein Ratio
    The biotin to protein ratio is 0.5-1 as determined by the HABA assay.
  • Endotoxin
    Less than 1.0 EU per μg by the LAL method.
  • Purity

    >90% as determined by SDS-PAGE.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in Tris with Glycine, Arginine and NaCl, pH7.5. 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 was 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
Biotinylated Human IL-21, Fc,Avitag (Cat. No. IL1-H82F7) SDS-PAGE gel

Biotinylated Human IL-21, Fc,Avitag on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 90%.

Bioactivity-ELISA
Biotinylated Human IL-21, Fc,AvitagBiotinylated Human IL-21, Fc,Avitag (Cat. No. IL1-H82F7) ELISA bioactivity

Immobilized Biotinylated Human IL-21, Fc,Avitag (Cat. No. IL1-H82F7) at 2 μg/mL (100 μL/well) can bind Human IL-21 R, His Tag (Cat. No. ILR-H5226) with a linear range of 2-8 ng/mL (QC tested).

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Price(USD) : $350.00

Price(USD) : $1380.00

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