Overview

Description

  • NatureRecombinant
  • SourceYeast
  • Amino Acid Sequence
    • SequenceAPAFRYTRSQ SFDIFDINQK CFVLESPTQL VALHLQGPSS SQKVRLNIAL YRPRGPRGSA GAGQTPVALG IKGYKLYMSC VLSGAEPTLQ LEEADVTRDI DSAELTRFVF YRLDSPAEGT TRFESAAFPG WFICTSLQPR QPVGITNRPD QVNIATYKLS GR
    • Amino acids106 to 267

Specifications

Our Abpromise guarantee covers the use of ab93084 in the following tested applications.

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

  • Applications

    SDS-PAGE

  • FormLyophilised
  • 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: 10% Trehalose, 1X PBS

  • ReconstitutionReconstitute with sterile phosphate-buffered saline containing at least 0.1% carrier protein.

General Info

  • Alternative names
    • Catabolin
    • H1
    • IL 1
    • IL 1 beta
    • IL-1 beta
    • IL1 BETA
    • IL1B
    • IL1B_HUMAN
    • IL1F2
    • Interleukin 1 beta
    • Interleukin-1 beta
    • OAF
    • OTTHUMP00000162031
    • Preinterleukin 1 beta
    • Pro interleukin 1 beta
    see all
  • FunctionPotent proinflammatory cytokine. Initially discovered as the major endogenous pyrogen, induces prostaglandin synthesis, neutrophil influx and activation, T-cell activation and cytokine production, B-cell activation and antibody production, and fibroblast proliferation and collagen production. Promotes Th17 differentiation of T-cells.
  • Tissue specificityExpressed in activated monocytes/macrophages (at protein level).
  • Sequence similaritiesBelongs to the IL-1 family.
  • Post-translational
    modifications
    Activation of the IL1B precursor involves a CASP1-catalyzed proteolytic cleavage. Processing and secretion are temporarily associated.
  • Cellular localizationCytoplasm, cytosol. Lysosome. Secreted, exosome. Cytoplasmic vesicle, autophagosome. Secreted. The precursor is cytosolic. In response to inflammasome-activating signals, such as ATP for NLRP3 inflammasome or bacterial flagellin for NLRC4 inflammasome, cleaved and secreted. IL1B lacks any known signal sequence and the pathway(s) of its secretion is(are) not yet fully understood (PubMed:24201029). On the basis of experimental results, several unconventional secretion mechanisms have been proposed. 1. Secretion via secretory lysosomes: a fraction of CASP1 and IL1B precursor may be incorporated, by a yet undefined mechanism, into secretory lysosomes that undergo Ca(2+)-dependent exocytosis with release of mature IL1B (PubMed:15192144). 2. Secretory autophagy: IL1B-containing autophagosomes may fuse with endosomes or multivesicular bodies (MVBs) and then merge with the plasma membrane releasing soluble IL1B or IL1B-containing exosomes (PubMed:24201029). However, autophagy impacts IL1B production at several levels and its role in secretion is still controversial. 3. Secretion via exosomes: ATP-activation of P2RX7 leads to the formation of MVBs containing exosomes with entrapped IL1B, CASP1 and other inflammasome components. These MVBs undergo exocytosis with the release of exosomes. The release of soluble IL1B occurs after the lysis of exosome membranes (By similarity). 4. Secretion by microvesicle shedding: activation of the ATP receptor P2RX7 may induce an immediate shedding of membrane-derived microvesicles containing IL1B and possibly inflammasome components. The cytokine is then released in the extracellular compartment after microvesicle lysis (PubMed:11728343). 5. Release by translocation through permeabilized plasma membrane. This may occur in cells undergoing pyroptosis due to sustained activation of the inflammasome (By similarity). These mechanisms may not be not mutually exclusive.
  • Information by UniProt

References for Recombinant IL1 beta protein (ab93084)

ab93084 has not yet been referenced specifically in any publications.

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