Interleukin-33 (IL-33) is a recently identified member of the IL-1 family of cytokines whose other members include IL-1a/b, IL-1Ra and IL-18. Its receptor has been shown to be ST2, an IL-1 receptor family member that also acts as a negative regulator of TLR-IL-1R signaling and IL-1R accessory protein (IL-1RAcP). Receptor binding of IL-33 activates NF-kB and MAP kinases and induces the expression of TH2-associated cytokines such as IL-4, IL-5 and IL-6. Prolonged IL-33 treatment of mice led to the development of eosinophilia, splenomegaly, and severe pathological changes in mucosal organs such as lungs, esophagus and small intestine. Recent experiments have shown that IL-33 can also colocalize with heterochromatin and possesses transcriptional repressor activities, indicating that IL-33 may function as both a proinflammatory cytokine and an intracellular nuclear factor with transcriptional regulatory properties. This recombinant protein represents the cleaved and presumably activated form of IL-33, but has not been tested in any biological assays.
Source:Recombinant protein corresponding to human IL-33, fused to His-tag at C-terminal expressed in E.coli.
Molecular Weight:~22kD
Applications:Suitable for use in ELISA and Western Blot. Other applications not tested.
Recommended Dilution:Optimal dilutions to be determined by the researcher.
Storage and Stability:Aliquot to avoid repeated freezing and thawing and store at -70°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
仕様
Size：50ug
Source Antigen：Recombinant, E. coli
Grade：Highly Purified
Purity：~95%
Form：Supplied as a liquid in 100mM sodium phosphate, 500mM sodium chloride, 25mM imidazole, 10% glycerol.
