The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Activates Human ST2 dependent NF-kB pathway. Does not activate Mouse ST2-dependent NF-kB.
< 0.100 Eu/µg
PBS containing at least 0.1 % BSA should be used for further dilutions.
Concentration information loading...
Preparation and Storage
Stability and Storage
Shipped at 4°C. After reconstitution store at -20ºC. Avoid freeze / thaw cycles.
Constituent: 99% PBS
This product is an active protein and may elicit a biological response in vivo, handle with caution.
Reconstitute with 100 µl sterile water. Concentration is 0.1 mg/ml after reconstitution.
CHROMOSOME 9 OPEN READING FRAME 26
DVS27 related protein
Interleukin 1 family member 11
INTERLEUKIN 33 NFHEV
Interleukin 33 precursor
Interleukin-1 family member 11
Nuclear factor for high endothelial venules
Nuclear factor from high endothelial venules
Cytokine that binds to and signals through the IL1RL1/ST2 receptor which in turn activates NF-kappa-B and MAPK signaling pathways in target cells (PubMed:16286016). Involved in the maturation of Th2 cells inducing the secretion of T-helper type 2-associated cytokines. Also involved in activation of mast cells, basophils, eosinophils and natural killer cells. Acts as a chemoattractant for Th2 cells, and may function as an "alarmin", that amplifies immune responses during tissue injury (PubMed:17853410, PubMed:18836528). In quiescent endothelia the uncleaved form is constitutively and abundantly expressed, and acts as a chromatin-associated nuclear factor with transcriptional repressor properties, it may sequester nuclear NF-kappaB/RELA, lowering expression of its targets (PubMed:21734074). This form is rapidely lost upon angiogenic or proinflammatory activation (PubMed:18787100).
Expressed at high level in high endothelial venules found in tonsils, Peyer patches and mesenteric lymph nodes. Almost undetectable in placenta.
Belongs to the IL-1 family. Highly divergent.
The homeodomain-like HTH domain mediates nuclear localization and heterochromatin association.
The full length protein can be released from cells and is able to signal via the IL1RL1/ST2 receptor. However, proteolytic processing by CSTG/cathepsin G and ELANE/neutrophil elastase produces C-terminal peptides that are more active than the unprocessed full length protein. May also be proteolytically processed by calpains (PubMed:19596270). Proteolytic cleavage mediated by apoptotic caspases including CASP3 and CASP7 results in IL33 inactivation (PubMed:19559631). In vitro proteolytic cleavage by CASP1 was reported (PubMed:16286016) but could not be confirmed in vivo (PubMed:19465481) suggesting that IL33 is probably not a direct substrate for that caspase.
Nucleus. Chromosome. Cytoplasmic vesicle, secretory vesicle. Secreted. Associates with heterochromatin and mitotic chromosomes (PubMed:17185418).