• Product nameAnti-IL1 beta antibody
    See all IL1 beta primary antibodies
  • Description
    Rabbit polyclonal to IL1 beta
  • Tested applicationsSuitable for: WB, IHC-Pmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Mouse, Rat, Chimpanzee, Macaque Monkey
  • Immunogen

    Synthetic peptide conjugated to KLH derived from within residues 150 - 250 of Human IL1 beta.

  • Positive control
    • This antibody gave a positive signal in Jurkat and MOLT4 whole cell lysates. IHC-P: human spleen FFPE tissue sections.



Our Abpromise guarantee covers the use of ab82558 in the following tested applications.

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

Application Abreviews Notes
WB Use a concentration of 1 µg/ml. Detects a band of approximately 17 kDa (predicted molecular weight: 30 kDa).

The band observed at 17 kDa represent the mature form of IL1 beta due to the presence of a 116 amino acid propeptide.

IHC-P Use a concentration of 1 µg/ml. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.


  • 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
    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
  • Database links
  • Alternative names
    • Catabolin antibody
    • H1 antibody
    • IL 1 antibody
    • IL 1 beta antibody
    • IL-1 beta antibody
    • IL1 BETA antibody
    • IL1B antibody
    • IL1B_HUMAN antibody
    • IL1F2 antibody
    • Interleukin 1 beta antibody
    • Interleukin-1 beta antibody
    • OAF antibody
    • OTTHUMP00000162031 antibody
    • Preinterleukin 1 beta antibody
    • Pro interleukin 1 beta antibody
    see all

Anti-IL1 beta antibody images

  • All lanes : Anti-IL1 beta antibody (ab82558) at 1 µg/ml

    Lane 1 : Jurkat (Human T cell lymphoblast-like cell line) Whole Cell Lysate
    Lane 2 : MOLT4 (Human acute lymphoblastic leukemia cell line) Whole Cell Lysate

    Lysates/proteins at 10 µg per lane.

    Goat Anti-Rabbit IgG H&L (HRP) preadsorbed (ab97080) at 1/5000 dilution
    developed using the ECL technique

    Performed under reducing conditions.

    Predicted band size : 30 kDa
    Observed band size : 17 kDa (why is the actual band size different from the predicted?)

    Exposure time : 20 minutes

    The band observed at 17 kDa represent the mature form of IL1 beta due to the presence of a 116 amino acid propeptide.

  • IHC image of IL1 beta staining in human spleen formalin fixed paraffin embedded tissue section, performed on a Leica BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab82558, 1µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

    For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.

References for Anti-IL1 beta antibody (ab82558)

ab82558 has not yet been referenced specifically in any publications.

Product Wall

Merci pour ces précisions. Comme convenu j'ai procédé à l'envoi d'une unité de ab82558. Le numéro de commande de remplacement gratuit de ce produit est *********. Vous recevrez prochainement un mail de confirmation comprenant les détails d'expédition. ...

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Suite à votre appel, j'ai regardé les différents anti-IL1 que nous avons dans notre catalogue. Après élimination des anticorps testés avec les protéines recombinantes et non avec des lysats, j'ai retenu les références suivantes : - ab82558 : bande ...

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