Name: Recombinant IL-4, Human, GMP
Price: 1445.00 USD

- Overview
  - Interleukin-4 (IL-4) is a key cytokine produced by activated T cells, mast cells, basophils, neutrophils and eosinophils. IL-4 is critical for the development of Th2-mediated responses, which is related to allergy and asthma. It can also regulate B cell responses, including survival, cell proliferation and gene expression. IL-4 also plays fundamental role for B-cell stimulation, including induction of the IgE isotype switch.
    
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- Properties
  - Protein Name
    
    interleukin 4, BCGF, BCDF, B-cell Stimulating Factor (BSF-1), IL4
    
    Source
    
    E. coli
    
    Type
    
    Recombinant Proteins
    
    Reactivity
    
    Human
    
    Purification
    
    >98% as determined by SDS-PAGE analysis.
    
    Formulation
    
    Lyophilized from a 0.2µm filtered solution of PBS, pH 8.0.
    
    Storage
    
    Lyophilized protein should be stored at -20°C for 1 year. Upon reconstitution, store at 2°C to 8°C for up to 1 week. Further dilute in a buffer containing a carrier protein or stabilizer (e.g. 0.1% BSA, 10%FBS, 5%HSA or 5% trehalose solution), protein aliquots should be stored at -20°C or -80°C for 3-6 months. Avoid repeated freeze/thaw cycles.
    
    Note
    
    Centrifuge at 3000 rpm for 5 mins before opening. 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 at RT for at least 20 mins to ensure sufficient re-dissolved. Do Not Vortex! Vigorous shaking may impair the biological activity of the protein.
    
    Molecular Weight
    
    The protein has a calculated MW of 15.9kDa. The protein migrates as 12kDa under reducing condition (SDS-PAGE analysis).
    
    Class
    
    Cytokines
    
    Sequence
    
    MHKCDITLQEIIKTLNSLTEQKTLCTELTVTDIFAASKNTTEKETFCRAATVLRQFYSHHEKDTRCLGATAQQFHRHKQLIRFLKRLDRNLWGLAGLNSCPVKEANQSTLENFLERLKTIMREKYSKCSS with polyhistidine tag at the C-terminus.
    
    Affinity Tag
    
    His Tag (C-term)
    
    Endotoxin
    
    <0.05EU per 1μg of the protein by the LAL method.
    
    Activity
    
    Measure by its ability to induce TF-1 cells proliferation. The ED50 for this effect is <0.2ng/mL. The specific activity of recombinant human IL-4 is approximately >2.8x10^7 IU/mg.
    
    More Information
    
    UniProt
    
    P05112
    
    * For research use only.

Recombinant IL-4, Human, GMP

Recombinant IL-4, Human, GMP

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