• Product name
  • Description
    Rabbit polyclonal to IRE1
  • Tested applications
    Suitable for: WB, ICC/IF, ICCmore details
  • Species reactivity
    Reacts with: Mouse, Rat, Human
  • Immunogen

    Synthetic peptide consisting of 16 amino acid from near the carboxy terminus (Human).

  • Positive control
    • WB: A20 cell lysate.



Our Abpromise guarantee covers the use of ab37073 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 0.5 - 2 µg/ml. Detects a band of approximately 107 kDa (predicted molecular weight: 110 kDa).

Please note there is a smaller isoform of IRE1 in rat (predicted molecular weight:68.6kDa; accession number is EDM06401). Block for 2 hours at RT or overnight at 4C using 5% non-fat milk.

ICC/IF Use a concentration of 1 µg/ml.
ICC Use a concentration of 1 µg/ml.


  • Function
    Senses unfolded proteins in the lumen of the endoplasmic reticulum via its N-terminal domain which leads to enzyme auto-activation. The active endoribonuclease domain splices XBP1 mRNA to generate a new C-terminus, converting it into a potent unfolded-protein response transcriptional activator and triggering growth arrest and apoptosis.
  • Tissue specificity
    Ubiquitously expressed. High levels observed in pancreatic tissue.
  • Sequence similarities
    Belongs to the protein kinase superfamily. Ser/Thr protein kinase family.
    Contains 1 KEN domain.
    Contains 1 protein kinase domain.
  • Post-translational
  • Cellular localization
    Endoplasmic reticulum membrane.
  • Information by UniProt
  • Database links
  • Alternative names
    • Endoplasmic reticulum (ER) to nucleus signalling 1 antibody
    • Endoplasmic reticulum to nucleus signaling 1 antibody
    • Endoplasmic reticulum-to-nucleus signaling 1 antibody
    • Endoribonuclease antibody
    • ER to nucleus signaling 1 antibody
    • ERN 1 antibody
    • Ern1 antibody
    • ERN1_HUMAN antibody
    • hIRE 1p antibody
    • hIRE1p antibody
    • Inositol requiring 1 antibody
    • Inositol requiring 1, S. cerevisiae, homolog of antibody
    • Inositol requiring enzyme 1, S. cerevisiae, homolog of antibody
    • Inositol requiring protein 1 antibody
    • inositol-requiring enzyme 1 antibody
    • Inositol-requiring protein 1 antibody
    • IRE 1 antibody
    • IRE 1a antibody
    • IRE 1P antibody
    • Ire1 alpha antibody
    • Ire1-alpha antibody
    • IRE1a antibody
    • Ire1alpha antibody
    • IRE1P antibody
    • MGC163277 antibody
    • MGC163279 antibody
    • Protein kinase/endoribonuclease antibody
    • RGD1559716 antibody
    • Serine/threonine protein kinase/endoribonuclease IRE1 antibody
    see all


  • Predicted band size : 110 kDa
    Western Blot of rat brain lysate labeling IRE1 with Anti-IRE1 antibody (ab37073) at (1) 0.5 and (2) 1µg/ml.
  • Lane 1 : Anti-IRE1 antibody (ab37073) at 0.5 µg/ml
    Lane 2 : Anti-IRE1 antibody (ab37073) at 1 µg/ml
    Lane 3 : Anti-IRE1 antibody (ab37073) at 2 µg/ml

    Lane 1 : A20 cell lysate
    Lane 2 : A20 cell lysate
    Lane 3 : A20 cell lysate

    Lysates/proteins at 15 µg per lane.

    goat anti-rabbit HRP at 1/10000 dilution

    Predicted band size : 110 kDa
    Observed band size : 107 kDa (why is the actual band size different from the predicted?)
  • ab37073, at 1 µg/ml, staining IRE1 in A20 cells with by ICC.

  • Immunocytochemistry/Immunofluorescence of IRE1p in A20 cells using ab37073 at 2 ug/ml.


This product has been referenced in:
  • Feng S  et al. NS5ABP37 inhibits liver cancer by impeding lipogenesis and cholesterogenesis. Cancer Sci 108:12-22 (2017). WB ; Human . Read more (PubMed: 27862769) »
  • Jiang Y  et al. Expression of inositol-requiring enzyme 1ß is downregulated in colorectal cancer. Oncol Lett 13:1109-1118 (2017). IHC-P ; Human . Read more (PubMed: 28454221) »

See all 26 Publications for this product

Customer reviews and Q&As

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I will let you know as soon as I have any further information regarding the immunogen sequences fo...

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Abcam guarantees this product to work in the species/application used in this Abreview.
Western blot
Mouse Cell lysate - whole cell (CEC)
Loading amount
30 µg
Gel Running Conditions
Reduced Denaturing (8%)
Blocking step
Milk as blocking agent for 2 hour(s) and 0 minute(s) · Concentration: 10% · Temperature: 25°C

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Verified customer

Submitted Apr 22 2008


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