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Leadgene Leadgene
Human IL-1RA, His Tag, E. coli
Catalog Number

LDG094PHE

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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 7.4.

    • Purity

      >98% as determined by SDS-PAGE analysis.

      Molecular weight

      The protein has a calculated MW of 18.07 kDa.
      The protein migrates as 19 kDa under reducing condition (SDS-PAGE analysis).

    • Activity

      Measure by its ability to inhibit IL-1 alpha -dependent proliferation in D10.G4.1 cells. The ED₅₀ for this effect is <50 ng/mL.

      Endotoxin Level

      <0.1 EU per 1 μg of the protein by the LAL method.

    • Form

      Lyophilized

  • Background
    • Background

      Interleukin 1 receptor antagonist (IL-1RA) is a 17.26 kDa member of IL-1 family with 153 amino acid residues. IL-1RA is expressed by peripheral blood cells, lungs, spleen, liver and is secreted from monocytes, macrophages, neutrophils, and other cells. Inhibits the activity of interleukin-1 by binding to receptor IL1R1. IL-1RA can modulate a variety of interleukin-1 related immune and inflammatory responses, particularly in the acute phase of infection and inflammation.

      Synonyms

      ICIL-1RA, IL1 inhibitor, Interleukin-1 receptor antagonist protein

    • Uniprot ID

      #P18510

      Sequence Note

      Arg26-Glu177

  • Instruction
    • Reconstitution

      It is recommended to reconstitute the lyophilized protein in sterile H₂O to a concentration not less than 200 μg/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.

  • Image
    SDS-PAGE analysis of recombinant human IL-1RA.

    SDS-PAGE analysis of recombinant human IL-1RA.

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  • Datasheet & Documents
    MSDS
    Manual
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