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Your Position: Home > Cytokines > IL-2 > IL2-H82E4

Biotinylated Human IL-2 Protein, His,Avitag™

  • Synonym
    IL2,TCGF,lymphokine,Interleukin 2
  • Source
    Biotinylated Human IL-2, His,Avitag (IL2-H82E4) is expressed from human 293 cells (HEK293). It contains AA Ala 21 - Thr 153 (Accession # P60568-1).
    Predicted N-terminus: Ala 21
  • Molecular Characterization
    Online(Ala 21 - Thr 153) P60568-1

    This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag.

    The protein has a calculated MW of 19.1 kDa. The protein migrates as 19 kDa and 20 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

    >95% as determined by SDS-PAGE.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in PBS with Arginine, pH7.4. 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.

    This product is stable after storage at:

    1. -20°C to -70°C for 12 months in lyophilized state;
    2. -70°C for 3 months under sterile conditions after reconstitution.
SDS-PAGE
Biotinylated Human IL-2, His,Avitag (Cat. No. IL2-H82E4) SDS-PAGE gel

Biotinylated Human IL-2, His,Avitag on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.

Bioactivity-ELISA
Biotinylated Human IL-2, His,AvitagBiotinylated Human IL-2, His,Avitag (Cat. No. IL2-H82E4) ELISA bioactivity

Immobilized Human IL-2 R alpha, Fc Tag (Cat. No. ILA-H5251) at 5 μg/mL (100 μL/well) can bind Biotinylated Human IL-2, His,Avitag (Cat. No. IL2-H82E4) with a linear range of 0.6-5 ng/mL (QC tested).

Bioactivity-BLI
Human_FcRn_Heterodimer_Protein_Bli

Loaded Biotinylated Human IL-2, His,Avitag (Cat. No. IL2-H82E4) on SA Biosensor, can bind Human IL-2 R beta, His Tag (SPR verified) (Cat. No. CD2-H5221) with an affinity constant of 1.3 μM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

  • Background
    Interleukin-2 (IL-2) is an interleukin, a type of cytokine immune system signaling molecule, which is a leukocytotrophic hormone that is instrumental in the body's natural response to microbial infection and in discriminating between foreign (non-self) and self. IL-2 mediates its effects by binding to IL-2 receptors, which are expressed by lymphocytes, the cells that are responsible for immunity. Mature human IL-2 shares 56% and 66% aa sequence identity with mouse and rat IL-2, respectively. Human and mouse IL-2 exhibit crossspecies activity. The receptor for IL-2 consists of three subunits that are present on the cell surface in varying preformed complexes. IL-2 is also necessary during T cell development in the thymus for the maturation of a unique subset of T cells that are termed regulatory T cells (T-regs). After exiting from the thymus, T-Regs function to prevent other T cells from recognizing and reacting against "self antigens", which could result in "autoimmunity". T-Regs do so by preventing the responding cells from producing IL-2. Thus, IL-2 is required to discriminate between self and non-self, another one of the unique characteristics of the immune system.
  • References
  • Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.

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Price(USD) : $350.00

Price(USD) : $1380.00

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Drug Development Status

  • Number of Launched Drugs:2 Details
  • Number of Drugs in Clinical Trials:30 Details
  • Latest Research Phase:Approved

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