Abbreviation
Recombinant Mouse Il33 protein, partial (Active)
Purity
>98% as determined by SDS-PAGE.
Endotoxin
Less than 1.0 EU/μg as determined by LAL method.
Activity
Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using murine D10S cells is less than 0.5 ng/ml, corresponding to a specific activity of >2.0x106 IU/mg.
Alternative Names
Il33Interleukin-33; IL-33) [Cleaved into: Interleukin-33(102-266); Interleukin-33(109-266)]
Species
Mus musculus (Mouse)
Expression Region
109-266aa
Target Protein Sequence
SIQGTSLLTQ SPASLSTYND QSVSFVLENG CYVINVDDSG KDQEQDQVLL RYYESPCPAS QSGDGVDGKK LMVNMSPIKD TDIWLHANDK DYSVELQRGD VSPPEQAFFV LHKKSSDFVS FECKNLPGTY IGVKDNQLAL VEEKDESCNN IMFKLSKI
Note: The complete
sequence may include tag sequence, target protein sequence, linker sequence and extra sequence that is
translated with the protein sequence for the purpose(s) of secretion, stability, solubility, etc.
If the exact amino acid sequence of this recombinant protein is critical to your application,
please explicitly request the full and complete sequence of this protein before ordering.
Protein Length
Full Length of Mature Protein
Tag Info
Tag-Free
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Form
Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer
Lyophilized from a 0.2 µm filtered PBS, and 1 mM EDTA
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Lead Time
5-10 business days
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Datasheet & COA
Please contact us to get it.
Description
IL-33 drives type 2 immune responses through ST2 receptor engagement, activating NF-κB and MAPK signaling cascades central to allergic inflammation, tissue repair, and innate lymphoid cell biology. This tag-free recombinant mouse IL-33 (residues 109–266) encompasses the mature cytokine domain and demonstrates exceptional signaling potency, with an ED50 below 0.5 ng/ml in murine D10S cell proliferation assays, corresponding to a specific activity exceeding 2.0 × 10⁶ IU/mg — providing a reliable reference standard for cytokine detection assays and a potent stimulus for ILC2 activation, Th2 differentiation, and mast cell degranulation studies. Endotoxin levels below 1.0 EU/μg minimize LPS-driven artifacts that can confound immune cell functional readouts, making this preparation appropriate for in vivo murine models of airway inflammation or fibrosis as well as antibody development workflows including ELISA coating and Western blot controls. Purity exceeding 98% by SDS-PAGE, combined with this stringent endotoxin profile, supports use in sensitive JAK/STAT and NF-κB pathway dissection experiments.