Overview

Description

  • NatureRecombinant
  • SourceEscherichia coli
  • Amino Acid Sequence
    • AccessionQ2YEJ5
    • SpeciesHuman
    • Molecular weight18 kDa
    • Amino acids112 to 270
    • TagsHis tag C-Terminus

Specifications

Our Abpromise guarantee covers the use of ab109065 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

  • Biological activityActivates Human ST2-dependent NF kappa B pathway.
  • Applications

    Functional Studies

    SDS-PAGE

  • Endotoxin level< 1.000 Eu/µg
  • Purity> 90 % SDS-PAGE.
    ab109065 is 0.2 µm filtered.
  • FormLiquid
  • Concentration information loading...

Preparation and Storage

  • Stability and Storage

    Shipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid repeated freeze / thaw cycles.

    Preservative: None
    Constituents: 55mM Tris HCl, 150mM Sodium chloride, pH 8.2

    This product is an active protein and may elicit a biological response in vivo, handle with caution.

General Info

  • Alternative names
    • C9orf26
    • CHROMOSOME 9 OPEN READING FRAME 26
    • DKFZp586H0523
    • DVS27
    • DVS27 related protein
    • IL 1F11
    • IL 33
    • IL-1F11
    • IL-33
    • IL1F11
    • IL33
    • IL33_HUMAN
    • Interleukin 1 family member 11
    • Interleukin 33
    • INTERLEUKIN 33 NFHEV
    • Interleukin 33 precursor
    • Interleukin-1 family member 11
    • Interleukin-33 (109-270)
    • Interleukin33
    • NF HEV
    • NF-HEV
    • NFEHEV
    • NFHEV
    • Nuclear factor for high endothelial venules
    • Nuclear factor from high endothelial venules
    • OTTHUMP00000021041
    • RP11 575C20.2
    see all
  • FunctionCytokine 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).
  • Tissue specificityExpressed at high level in high endothelial venules found in tonsils, Peyer patches and mesenteric lymph nodes. Almost undetectable in placenta.
  • Sequence similaritiesBelongs to the IL-1 family. Highly divergent.
  • DomainThe homeodomain-like HTH domain mediates nuclear localization and heterochromatin association.
  • Post-translational
    modifications
    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.
  • Cellular localizationNucleus. Chromosome. Cytoplasmic vesicle, secretory vesicle. Secreted. Associates with heterochromatin and mitotic chromosomes (PubMed:17185418).
  • Information by UniProt

Recombinant human IL33 protein images

  • Pull down assay:
    a) pull down of ab109065 by hST2-Fc
    b) pull down of hST2-Fc by ab109065.
    5 µg of hST2-Fc (or control Fc protein), 2 µg of ab109065 (or control His protein), and protein G resin (or anti-His resin) were incubated in 0.5 ml RIPA buffer overnight at 4°C. The precipitates were separated by SDS-PAGE, electro-transferred onto NC membrane, and immunoblotted for the presence of ab109065 or hST2-Fc with anti-His HRP or anti-hIgG HRP, respectively.

References for Recombinant human IL33 protein (ab109065)

ab109065 has not yet been referenced specifically in any publications.

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