Recombinant Human IL-4 (E. coli)

CAT: 0855-EPT139Size: 50 µgDry Ice: NoHazardous: No
CAT#:0855-EPT139Size:50 µg
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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.
Description
Recombinant Human Interleukin-4 is produced by our E.coli expression system and the target gene encoding His25-Ser153 is expressed.
UniProt
P05112
Accession Number
P05112
Endotoxin
Less than 0.001 ng/μg (0.01 EU/μg) as determined by LAL test.
Purity
Greater than 95% as determined by reducing SDS-PAGE.
Bioactivity
-3 nM as determined in BLI assay.
Molecular Weight
15.1 KDa
Shipping Conditions
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature listed below.
Storage Conditions
Lyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks. Reconstituted protein solution can be stored at 4-7°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.
Storage Temperature
Lyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks. Reconstituted protein solution can be stored at 4-7°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.
Notes
Always centrifuge tubes before opening.Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100μg/ml. Dissolve the lyophilized protein in distilled water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
Observed Molecular Weight
13-14 KDa, reducing conditions
Other Product Names
Interleukin-4; IL-4; B-Cell Stimulatory Factor 1; BSF-1; Binetrakin; Lymphocyte Stimulatory Factor 1; Pitrakinra; IL4

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