Recombinant Human IL-13 Protein is expressed from HEK293 with hFc tag at the N-Terminus.It contains Gly21-Asn132.
Reinheit
> 95 % as determined by Tris-Bis PAGE,> 95 % as determined by HPLC
Sterilität
0.22 μm filtered
Endotoxin-Niveau
Less than 1EU per μg by the LAL method.
Biological Activity Comment
Immobilized Human IL-13, hFc Tag at 2μg/ml (100μl/well) on the plate. Dose response curve for Biotinylated Human IL-13Ra1, His Tag with the EC50 of 2.8μg/ml determined by ELISA. The affinity constant of 0.399 μM as determined in SPR assay (Biacore T200). See testing image for detail.
IL13
Spezies: Human
Wirt: Escherichia coli (E. coli)
Recombinant
Greater than 95 % by SDS-PAGE gel analyses
WB, ELISA
Beschränkungen
Nur für Forschungszwecke einsetzbar
Format
Lyophilized
Rekonstitution
Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/mL is recommended. Dissolve the lyophilized protein in distilled water.
Buffer
Lyophilized from 0.22μm filtered solution in PBS ( pH 7.4). Normally 8 % trehalose is added as protectant before lyophilization.
Lagerung
-20 °C,-80 °C
Informationen zur Lagerung
-20 to -80°C for 12 months as supplied from date of receipt., -80°C for 3-6 months after reconstitution., 2-8°C for 2-7 days after reconstitution., Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
Interleukin-13 (IL-13) is a monomeric 17 kDa immunoregulatory cytokine that plays a key role in the pathogenesis of allergy, cancer, and tissue fibrosis. It is secreted by several helper T cell subsets, NK cells, mast cells, eosinophils, basophils, and visceral smooth muscle cells. Inhibits inflammatory cytokine production. Synergizes with IL2 in regulating interferon-gamma synthesis. May be critical in regulating inflammatory and immune responses. Positively regulates IL31RA expression in macrophages (By similarity).
Molekulargewicht
39.6 kDa. Due to glycosylation, the protein migrates to 50-70 kDa based on Tris-Bis PAGE result.