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Recombinant Human Interleukin-4/IL-4 Protein (Active)

Uniprot : P05112
  • Cat.No.:PKSH033456

  • Expression host: Human Cells

To Purchase PKSH033456

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  • 10µg
  • 50µg
Price: $117
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Description

Synonyms Interleukin-4; IL-4; B-Cell Stimulatory Factor 1; BSF-1; Binetrakin; Lymphocyte Stimulatory Factor 1; Pitrakinra; IL4
Species Human
Expression_host Human Cells
Sequence His25-Ser153
Accession P05112
Application Cell Culture
Mol_Mass 14.97 kDa
AP_Mol_Mass 18 kDa
Bio_Activity Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. The ED50 for this effect is 0.01-0.05 ng/ml.

Properties

Purity > 95 % as determined by SDS-PAGE.
Endotoxin level < 1.0 EU per g as determined by the LAL method.
Storage Lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8℃for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months.
Shipping This product is provided as lyophilized powder which is shipped with ice packs.
Formulation Lyophilized from a 0.2 μm filtered solution of 20mM PB, 150mM NaCl, pH 7.4.
Reconstitution Please refer to the printed manual for detailed information.

Background

Interleukin-4 (IL-4) is a pleiotropic cytokine that regulates diverse T and B cell responses including cell proliferation, survival and gene expression. IL-4 is produced by mast cells, T cells, and bone marrow stromal cells. IL-4 regulates the differentiation of naive CD4+ T cells into helper Th2 cells, characterized by their cytokine-secretion profile that includes secretion of IL-4, IL-5, IL-6, IL-10, and IL-13, which favor a humoral immune response. Another dominant function of IL-4 is the regulation of immunoglobulin class switching to the IgG1 and IgE isotypes. Excessive IL-4 production by Th2 cells has been associated with elevated IgE production and allergic response.

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