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Your Position: Home > Protein > IL-11 > IL1-H5242

Human lL-11 Protein, His Tag, Ultra Low Endotoxin (HPLC verified)

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  • Synonym
    IL-11, Interleukin-11, AGIF, Oprelvekin, IL11
  • Source
    Human lL-11 Protein, His Tag(IL1-H5242) is expressed from human 293 cells (HEK293). It contains AA Pro 22 - Leu 199 (Accession # NP_000632.1).
    Predicted N-terminus: His
  • Molecular Characterization
    IL-11 Structure

    This protein carries a polyhistidine tag at the N-terminus.

    The protein has a calculated MW of 21.0 kDa. The protein migrates as 22-27 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.

  • Endotoxin
    Less than 0.0005 EU per μg by the LAL method / rFC method.
  • Purity

    >90% as determined by SDS-PAGE.

    >90% as determined by SEC-HPLC.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in 10 mM Citric acid, PBS, pH3.0 with trehalose as protectant.

    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
IL-11 SDS-PAGE

Human lL-11 Protein, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90% (With Star Ribbon Pre-stained Protein Marker).

SEC-HPLC
IL-11 SEC-HPLC

The purity of Human lL-11 Protein, His Tag (Cat. No. IL1-H5242) was greater than 90% as determined by SEC-HPLC.

Bioactivity-ELISA
 IL-11 ELISA

Immobilized Human lL-11 Protein, His Tag (Cat. No. IL1-H5242) at 5 μg/mL (100 μL/well) can bind Human IL-11 R alpha, Fc Tag (Cat. No. ILR-H5256) with a linear range of 0.5-8 ng/mL (QC tested).

  • Background
    IL-11 (Interleukin 11) is a pleiotropic cytokine in the IL-6 family, which also includes LIF, CNTF, Oncostatin M, Cardiotrophin-1, IL-27 and IL-31 (1-3). In humans, IL-11 was also independently discovered as an adipogenesis inhibitory factor (AGIF) (3). The human IL-11 cD encodes a 199 amino acid (aa) precursor, which generates a 178 aa, 19 kDa mature unglycosylated protein. Mature human IL-11 shares 88%, 88%, and 96% aa sequence identity with mouse, rat and canine IL-11, respectively. IL-11 is secreted by osteoblasts, synoviocytes, fibroblasts, chondrocytes, intestinal myofibroblasts, and trophoblasts, among other cell types (1). It is found in the plasma mainly during inflammation, such as that associated with viral infection, cancer, or inflammatory arthritis, and is considered to be primarily anti‑inflammatory (1). It stimulates hematopoiesis and thrombopoiesis, regulates macrophage differentiation, and confers mucosal protection in the intestine (1). It has also been found to enhance T cell polarization toward Th2, promote B cell IgG production, increase osteoclast bone absorption, protect endothelial cells from oxidative stress, and regulate epithelial proliferation and apoptosis (1). IL-11 synergizes with several other cytokines to produce these effects, and its effects overlap with those of IL-6 (1). IL-11 receptor activation requires formation of a complex of two IL-11 molecules with two molecules of the ligand-binding IL-11 R alpha subunit and two molecules of the ubiquitously expressed cell signaling beta subunit, gp130 (4). A soluble form of IL-11 R alpha can bind IL-11 and either form a signaling complex with gp130 on the cell surface, or inhibit cell surface IL-11 R alpha /gp130 signaling (5-7).
  • Clinical and Translational Updates

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