Recombinant Human Interleukin-4/IL-4 protein (His tag)

Product Specifications

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.

Abbreviation

Interleukin-4; IL-4

Synonyms

Interleukin; B-cell growth factor; BSF; IL4; BCGF-1; BCGF1; BSF-1; BSF1; IL-4; B-cell growth factor 1; B-cell IgG differentiation factor; B-cell stimulatory factor 1; Binetrakin; IGG1 induction factor; Interleukin-4; Lymphocyte stimulatory factor 1; Pitrakinra; IL2

UniProt

P05112

Accession Number

P05112

Expression System

HEK293 Cells

Tag

C-His

Sequence

Met1-Ser153

Field of Research

Cancer; immunology

Endotoxin

< 1.0 EU/mg of the protein as determined by the LAL method.

Purity

> 95% as determined by reducing SDS-PAGE.

Bioactivity

Not validated for activity

Reconstitution

It is recommended that sterile water be added to the vial to prepare a stock solution of 0.5 mg/mL. Concentration is measured by UV-Vis.

Shipping Conditions

This product is provided as lyophilized powder which is shipped with ice packs.

Storage Conditions

Generally, 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°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.