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IL-4 Recombinant Protein

CATALOG NUMBER: 91-040

Specifications
source-species:
E. coli
Species:
Human
source-species:
E. coli
Recombinant Protein Sequence:
His25-Ser153
Fusion Tag:
Tag Free
Application Note:
This recombinant protein can be used for biological assays. For research use only.
Predicted Molecular Weight:
15.1 kD
Biological Activity:
ED50 is less than 2 ng/ml as determined by the dose-dependent stimulation of TF-1 cells.
Specific Activity of 5.0 x 106 IU/mg.
Purity:
Greater than 95% as determined by reducing SDS-PAGE.
Endotoxin level less than 0.1 ng/ug (1 IEU/ug) as determined by LAL test.
physical-state:
Lyophilized
Buffer:
Lyophilized from a 0.2 um filtered solution of 20mM PB, 150mM NaCl, pH 7.4. It is not recommended to reconstitute to a concentration less than 100 ug/ml. Dissolve the lyophilized protein in ddH2O.
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.
Ncbi Official Symbol:
IL4
Additional Names:
Interleukin-4, IL-4, B-Cell Stimulatory Factor 1, BSF-1, Binetrakin, Lymphocyte Stimulatory Factor 1, Pitrakinra, IL4
Protein Accession Number:
P05112
Protein Gi Number:
189065303
Ncbi Gene Id Number:
3565
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.

FOR RESEARCH USE ONLY

For additional information, visit ProSci’s Terms & Conditions Page.

Disclaimer:
Products are intended for laboratory research purposes only and should be used by qualified personnel only. They are not intended for use in humans. ProSci is not liable for damages or injuries resulting from receipt and/or use of ProSci materials. Please refer to the Material Safety Data Sheet (MSDS) for safe storage, handling, and use procedures.

CATALOG NUMBER:

91-040

List Size:
0.05 mg

List Price:

$577.00

Datasheet
Shipping Info

$65 Standard Overnight flat rate for as many products shipped within the United States.

$35 Dry Ice Shipment fee may be required on some items.

Note: Online orders only accepted for shipment within the USA. Click here for the list of international distributors.

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