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rhIL-3, CF (1 MG)
rhIL-3, CF (1 MG)
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rhIL-3, CF (1 MG)

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品牌： R&D Systems
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    产品介绍
    产品信息

    Scientific Data

    SEC-MALS View Larger

    Recombinant Human IL-3 Protein (Catalog # 203-IL) has a molecular weight (MW) of 14.6 kDa as analyzed by SEC-MALS, suggesting that this protein is a monomer.

    Bioactivity Recombinant Human IL-3 Protein BioactivityView Larger

    Recombinant Human IL-3 (Catalog # 203-IL) stimulates cell proliferation of the TF-1 human erythroleukemic cell line. The ED50 for this effect is 0.02-0.1 ng/mL.

    SDS-PAGE Recombinant Human IL-3 Protein SDS-PAGEView Larger

    1 μg/lane of Recombinant Human IL-3 was resolved with SDS-PAGE under reducing (R) conditions and visualized by silver staining, showing a single band at 14 kDa.

    Carrier Free

    What does CF mean?

    CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

    What formulation is right for me?

    In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

    203-IL

    FormulationLyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
    ReconstitutionReconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
    ShippingThe product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
    Stability & Storage:Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
    • 12 months from date of receipt, -20 to -70 °C as supplied.
    • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
    • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

    203-IL/CF

    FormulationLyophilized from a 0.2 μm filtered solution in PBS.
    ReconstitutionReconstitute at 100 μg/mL in sterile PBS.
    ShippingThe product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
    Stability & Storage:Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
    • 12 months from date of receipt, -20 to -70 °C as supplied.
    • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
    • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

    Recombinant Human IL-3 Protein Summary

    Product Specifications

    Purity
    >97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
    Endotoxin Level
    <0.10 EU per 1 μg of the protein by the LAL method.
    Activity
    Measured in a cell proliferation assay using TF‑1 human erythroleukemic cells. Kitamura, T. et al. (1989) J. Cell Physiol. 140:323. The ED50 for this effect is 0.02-0.1 ng/mL.
    Source
    E. coli-derived human IL-3 protein
    Ala20-Phe152, with and without an N-terminal Met
    Accession #
    AAC08706
    N-terminal Sequence
    Analysis
    Ala20 and Met
    Predicted Molecular Mass
    15 kDa
    背景
    背景

    Background: IL-3

    Interleukin 3 is a pleiotropic factor produced primarily by activated T cells that can stimulate the proliferation and differentiation of pluripotent hematopoietic stem cells as well as various lineage committed progenitors. In addition, IL-3 also affects the functional activity of mature mast cells, basophils, eosinophils and macrophages. Because of its multiple functions and targets, it was originally studied under different names, including mast cell growth factor, P-cell stimulating factor, burst promoting activity, multi-colony stimulating factor, thy-1 inducing factor and WEHI-3 growth factor. In addition to activated T cells, other cell types such as human thymic epithelial cells, activated murine mast cells, murine keratinocytes and neurons/astrocytes can also produce IL-3. At the amino acid sequence level, mature human and murine IL-3 share only 29% sequence identity. Consistent with this lack of homology, IL-3 activity is highly species-specific and human IL-3 does not show activity on murine cells.

    IL-3 exerts its biological activities through binding to specific cell surface receptors. The high affinity receptor responsible for IL-3 signaling is composed of at least two subunits, an IL-3 specific alpha chain which binds IL-3 with low affinity and a common beta chain that is shared by the IL-5 and GM-CSF high-affinity receptors. Although the beta chain itself does not bind IL-3, it confers high-affinity IL-3 binding in the presence of the  alpha chain. Receptors for IL-3 are present on bone marrow progenitors, macrophages, mast cells, eosinophils, megakaryocytes, basophils and various myeloid leukemic cells.

    Long Name
    Interleukin 3
    Entrez Gene IDs
    3562 (Human); 16187 (Mouse); 24495 (Rat)
    Alternate Names
    Hematopoietic growth factor; IL3; IL-3; IL-3MGC79398; interleukin 3 (colony-stimulating factor, multiple); interleukin-3; Mast cell growth factor; mast-cell growth factor; MCGF; MCGFMGC79399; MULTI-CSF; multilineage-colony-stimulating factor; Multipotential colony-stimulating factor; P-cell stimulating factor; P-cell-stimulating factor
    研究领域
    制备和贮存
    溶解方法
    Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
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    货号：
    203-IL-01M/CF
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    1MG
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