LeadGMP® Human IL-21 Protein, His Tag, E. coli

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Catalog Number

LDG011PHE-GMP

Datasheet

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• Specifications

  • Species of Origin

    Human

    Expression System

    Escherichia coli

  • Affinity Tag

    His Tag (C-term)

    Storage Buffer

    Lyophilized from a 0.2 µm filtered solution of PBS, pH 8.0.

  • Purity

    >97% as determined by SDS-PAGE analysis.

    Molecular weight

    The protein has a calculated MW of 16.2 kDa.
    The protein migrates as 15-19 kDa under reducing condition (SDS-PAGE analysis).

  • Activity

    Measure by its ability to enhance IFN gamma secretion in NK-92 cells. The ED₅₀ for this effect is <10 ng/mL.

    Endotoxin Level

    <0.05 EU per 1 µg of the protein by the LAL method.

  • Mycoplasma

    Not detected

    Form

    Lyophilized

• Background

  • Background

    Interleukin-21 (IL-21) belongs to the IL-15/IL-21 family, which exerts pleiotropic immune regulations. IL-21 produced primarily by natural killer T (NKT) cells, T follicular helper (TFH) cells and TH17 cells. As a pleiotropic cytokine, IL-21 has been shown to regulate both innate and humoral immunity. It has potent inhibitory activity towards the activation and maturation of granulocyte-macrophage colony-stimulating factor (GM-CSF)-induced dendritic cells (DCs). In B cells, IL-21 has a major role in the development of immunoglobulin responses. In T cells, it is required to facilitate the functional differentiation of several CD4+ T cell subsets. In addition, the ability of IL-21 to enhance the cytotoxic activity of both CD8+ T cells and NK cells makes it as a potential antitumor agent.

    Synonyms

    Interleukin-21, Za11

  • Uniprot ID

    Q9HBE4

    Sequence Note

    Gln32-Ser162

• Instruction

  • Reconstitution

    It is recommended to reconstitute the lyophilized protein in sterile H₂O to a concentration not less than 0.5 mg/mL and incubate the stock solution for at least 20 min to ensure sufficient re-dissolved.

    Shipping

    The product is shipped with polar packs. Upon receipt, store it immediately at -20°C or lower for long term storage.

  • Stability & Storage

    This product is stable after storage at:

    • -20°C for 12 months in lyophilized state from date of receipt.
    • -20°C or -80°C for 1 month under sterile conditions after reconstitution.

    Avoid repeated freeze/thaw cycles.

    Manufacturing Specifications

    LeadGMP® recombinant proteins are manufactured in ISO 13485:2016 and GMP certified facility. The processes include:

    • Animal-free reagent and laboratory
    • Manufactured and tested under GMP guideline
    • Testing and traceability of raw material
    • Records of the maintenance and equipment calibration
    • Personnel training records
    • Batch-to-batch consistency
    • Documentation of QA control and process changes
    • Manufactured and tested under an ISO 13485:2016 certified quality management system
    • Stability monitor of product shelf-life

• Image

  LeadGMP® Human IL-21 Protein, His Tag, E. coli (LDG011PHE-GMP) enhances IFN gamma secretion in NK-92 cells, with the ED50 <10 ng/mL

  SDS-PAGE analysis of LeadGMP® IL-21, Human

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• Datasheet & Documents

  Datasheet

  MSDS

  Manual

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Disclaimer：For Research Use or Further Manufacturing Only.