Species of Origin
His Tag (C-term)
Lyophilized from a 0.2 µm filtered solution of PBS, pH 7.4.
>98% as determined by SDS-PAGE analysis.
The protein has a calculated MW of 18.51 kDa.
The protein migrates as 17-25 kDa under reducing condition (SDS-PAGE analysis).
Measure by its ability to induce proliferation in D10.G4.1 cells. The ED₅₀ for this effect is <40 pg/mL. The specific activity of recombinant mouse IL-33 is > 2 x 10⁷ IU/mg.
<0.1 EU per 1 μg of the protein by the LAL method.
Interleukin 33 (IL-33) is a 17.65 kDa cytokine with 159 amino acid residues. IL-33 is a member of the IL-1 family and secreted from various cell types, such as mast cells, macrophages, endothelial cells, and epithelial cells. IL-33 activates NF-κB and MAPK signaling pathways that stimulate the secretion of type 2 cytokines like IL-5 and IL-13 when IL-33 binds to the ST2 receptor primarily expressed in mast cells and Th2 cells. In addition to Th type 2 responses, IL-33 participates in maintaining barrier tissue defense.
Stability & Storage
This product is stable after storage at:
- -20°C for 12 months in lyophilized state from date of receipt.
- -20°C or -80°C for 1 month under sterile conditions after reconstitution.
Avoid repeated freeze/thaw cycles.
SDS-PAGE analysis of recombinant mouse IL-33.1/1
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Datasheet & Documents1/1
Disclaimer：For Research Use Only. Not for use in diagnostic or therapeutic procedures.