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400-6111-883
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400-6111-883
Recombinant Human IL-21
产品货号:90120ES10
产品规格:10 μg
产品价格:¥ 1855
类别:细胞因子

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  • Product Information

     

    Product Name

    Cat#

    Size

    Price(¥

    Recombinant Human Interleukin-21 (Human IL-21)

    90120ES10

    10 μg

    1855.00

    90120ES60

    100 μg

    13615.00

    90120ES76

    500 μg

    35395.00


    Product Description

     

    Interleukin-21 (IL-21) is a type I cytokine that modulates functions of T, B, natural killer (NK), and myeloid cells. IL-21 is produced by activated T follicular helper cells (Tfh), Th17 cells, and NKT cells. Tfh-derived IL-21 plays an important role in the development of humoral immunity through its autocrine effects on the Tfh cell and paracrine effects on immunoglobulin affinity maturation, plasma cell differentiation, and B cell memory responses.The 133 amino acid (aa) mature human IL-21 protein shares 63% and 61% aa sequence identity with mouse and rat IL-21 protein, respectively. Alternative splicing generates an additional isoform with a substitution of the C-terminal 16 amino acids. IL-21 shows having much relation with clinical illnesses, including cancer immunotherapy, viral infections and allergies. And it suppresses cutaneous hypersensitivity reactions by limiting allergen-specific IgE production and mast cell degranulation.

     

    Product Properties

     

    Synonyms

    Interleukin-21, IL-21, Za11

    Accession

    GeneID

    Source

    E.coli-derived human IL-21 protein, Gln30-Ser162.

    Molecular Weight

    Approximately 15.4 kDa under reducing conditions.

    AA Sequence

    QGQDRHMIRM RQLIDIVDQL KNYVNDLVPE FLPAPEDVET NCEWSAFSCF QKAQLKSANT GNNERIINVS IKKLKRKPPS TNAGRRQKHR LTCPSCDSYE KKPPKEFLER FKSLLQKMIH QHLSSRTHGS EDS

    Tag

    None

    Physical Appearance

    Sterile Filtered White lyophilized (freeze-dried) powder.

    Purity

    > 97% by SDS-PAGE and HPLC analyses.

    Biological Activity

    The ED50 as determined by a cell proliferation assay using human N1186 T cells is less than 20 ng/mL, corresponding to a specific activity of > 5.0 × 104 U/mg. Fully biologically active when compared to standard.

    Endotoxin

    < 1.0 EU per 1μg of the protein by the LAL method.

    Formulation

    Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 7.4.

    Reconstitution

    We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20℃. Further dilutions should be made in appropriate buffered solutions.

     

    Shipping and Storage

     

    The products are shipped with ice pack and can be stored at -20 to -80 for 1 year.

    Recommend to aliquot the protein into smaller quantities when first used and avoid repeated freeze-thaw cycles.

     

    Cautions

     

    Avoid repeated freeze-thaw cycles.

    For your safety and health, please wear lab coats and disposable gloves for operation.

    For research use only!

     

    HB220210