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Catalog Number | orb358987 |
---|---|
Category | Proteins |
Description | Recombinant human IL33 active protein |
Tag | Tag-Free |
Form/Appearance | Lyophilized powder |
Purity | > 97% as determined by SDS-PAGE and HPLC. |
MW | 17.9 kDa |
UniProt ID | O95760 |
Protein Sequence | SITGISPITEYLASLSTYNDQSITFALEDESYEIYVEDLKKDEKKDKVLLSYYESQHPSNESGDGVDGKMLMVTLSPTKDFWLHANNKEHSVELHKCEKPLPDQAFFVLHNMHSNCVSFECKTDPGVFIGVKDNHLALIKVDSSENLCTENILFKLSET |
Protein Length | Partial |
Source | E.Coli |
Biological Origin | Homo sapiens (Human) |
Biological Activity | Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using murine D10S cells is less than 0.05 ng/ml, corresponding to a specific activity of > 2.0 × 107 IU/mg. |
Expression Region | 112-270aa |
Endotoxins | Less than 1.0 EU/µg as determined by LAL method. |
Storage | 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℃/-80℃. The shelf life of lyophilized form is 12 months at -20℃/-80℃. |
Buffer/Preservatives | Lyophilized from a 0.2 μm filtered 20 mM PB, 150 mM NaCl, 1mM EDTA, pH 7.4 |
Alternative names | IL-33, IL-1F11, Nuclear factor from high endotheli Read more... |
Background | 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). {ECO:0000269|PubMed:16286016, ECO:0000269|PubMed:17853410, ECO:0000269|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). {ECO:0000269|PubMed:18787100, ECO:0000269|PubMed:21734074}. |
Note | For research use only |
Application notes | 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℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference. |
Expiration Date | 6 months from date of receipt. |
SDS-PAGE analysis of Human IL33 protein (Active)
18.0 kDa, observed by reducing SDS-PAGE. | |
Escherichia coli. |
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