IL33, Recombinant, Human, aa1-270, His-tag (Interleukin-33, IL-33, Interleukin-1 Family Member 11, IL-1F11, Nuclear Factor From High Endothelial Venules, NF-HEV, C9orf26, IL1F11, NFHEV)

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 (1,3) 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 co-localize 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.\n\nSource:\nRecombinant protein corresponding to human IL-33, fused to His-tag at C-terminal expressed in E.coli.\n\nMolecular Weight:\n~30kD\n\nApplications:\nSuitable for use in ELISA and Western Blot. Other applications not tested.\n\nRecommended Dilution:\nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nAliquot to avoid repeated freezing and thawing and store at -70 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

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SPECIFICATIONS

Catalog Number

149771

Size

50ug

Form

Supplied as a liquid in 100mM sodium phosphate, 500mM sodium chloride, 25mM imidazole, 10% glycerol.

Purity

~95%

References

1. Schmitz J, Owyang A, Oldham E, et al. IL-33, and interleukin-1-like cytokine that signals via the IL-1 receptor-related protein ST2 and induces T helper type 2-associated cytokines. Immunity 2005; 23:479-90. 2. Dinarello CA. Interleukin-18, a proinflammatory cytokine. Eur. Cytokine Netw. 2000; 11:483-6. 3. Brint EK, Xu D, Liu H, et al. ST2 is an inhibitor of interleukin 1 receptor and Toll-like receptor 4 signaling and maintains endotoxin tolerance. Nat. Immunol. 2004; 5:373-9. 4. Chackerian AA, Oldham ER, Murphy EE, et al. IL-1 receptor accessory protein and ST2 comprise the IL-33 receptor complex. J. Immunol. 2007; 179:2551-5.