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Your Position: Home > Cytokines & Growth Factors > Human-IL-1 beta-Protein

Human IL-1 beta / IL-1F2 Protein, Tag Free, low endotoxin

  • Synonym
    IL1B,IL-1BETA,IL1F2,IL-1β
  • Source
    Human IL-1 beta, Tag Free (ILB-H4110) is expressed from E.coli cells. It contains AA Ala 117 - Ser 269 (Accession # NP_000567).
    Predicted N-terminus: Met
  • Molecular Characterization
    IL-1 beta(Ala 117 - Ser 269) NP_000567

    This protein carries no "tag".

    The protein has a calculated MW of 17.5 kDa. The protein migrates as 18 kDa under reducing (R) condition (SDS-PAGE).

  • Endotoxin
    Less than 0.1 EU per μg by the LAL method.
  • Purity

    >97% as determined by SDS-PAGE.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in PBS, 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.

    No activity loss is 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
Human IL-1 beta, Tag Free (Cat. No. ILB-H4110) SDS-PAGE gel

Human IL-1 beta, Tag Free on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 97%.

Bioactivity
Human IL-1 beta, Tag FreeHuman IL-1 beta, Tag Free (Cat. No. ILB-H4110) ELISA bioactivity

Immobilized Human IL-1 beta, Tag Free (Cat. No. ILB-H4110) at 10μg/mL (100 μL/well) can bind Human IL-1 RII, Fc Tag (Cat. No. IL2-H4256) with a linear range of 0.039-0.15 μg/mL (QC tested).

  • Background
    Interleukin-1 beta (IL-1β) is also known as catabolin, is a cytokine protein that in humans is encoded by the IL1B gene. IL-1β precursor is cleaved by caspase 1 (interleukin 1 beta convertase). Cytosolic thiol protease cleaves the product to form mature IL-1 beta. IL1β are structurally related polypeptides that share approximately 21% amino acid (aa) identity in human. Both proteins are produced by a wide variety of cells in response to inflammatory agents, infections, or microbial endotoxins. While IL1α and IL1β are regulated independently, they bind to the same receptor and exert identical biological effects. IL-1β is a member of the interleukin 1 cytokine family. This cytokine is produced by activated macrophages as a proprotein, which is proteolytically processed to its active form by caspase 1 (CASP1/ICE). This cytokine is an important mediator of the inflammatory response, and is involved in a variety of cellular activities, including cell proliferation, differentiation, and apoptosis. The induction of cyclooxygenase-2 (PTGS2/COX2) by this cytokine in the central nervous system (CNS) is found to contribute to inflammatory pain hypersensitivity. This gene and eight other interleukin 1 family genes form a cytokine gene cluster on chromosome 2.
  • References
  • Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.

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Price(USD) : $280.00

Inventory : In stock

Price(USD) : $160.00

Inventory : In stock

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