Name : IL-13 Variant, Human

Product Concentration :

Background :
The human IL-13 cDNA encodes a 132 amino acid protein containing a proposed 20 amino acid signal peptide. Human IL-13 shares approximately 30% amino acid sequence homology to human IL-4 and the two cytokines exhibit overlapping biological activities. Human IL-13 is produced by activated Th0, Th1-like Th2-like and CD8 T cells. Similarly to IL-4, IL-13 has multiple effects on the differentiation and functions of monocytes/macrophages. IL-13 can suppress the cytotoxic functions of monocytes/macrophages. It can also suppress the production of proinflammatory cytokines and upregulate the production of IL-1ra by monocytes/macrophages.

Biological Activity :
Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using human TF-1 cells is less than 0.5 ng/ml, corresponding to a specific activity of > 2.0 × 106 IU/mg.

expression system :
E. coli

Tag :
IL-13 Variant (Gly35-Asn146)Accession # P35225

Protein Accession No. :
P35225

Synonyms :
Interleukin-13 Variant; IL-13 V

Molecular Weight :

Purity :
> 97% as analyzed by SDS-PAGE> 97% as analyzed by HPLC

Product Concentration :
Lyophilized from a 0.2 μm filtered solution in PBS, pH 7.2, 5% trehalose.

Storage and Stability :
Upon receiving, this product remains stable for up to 6 months at -70°C or -20°C. Upon reconstitution, the product should be stable for up to 1 week at 4°C or up to 3 months at -20°C. Avoid repeated freeze-thaw cycles.

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