IRE1 alpha Antibody

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Immunohistochemistry-Paraffin: IRE1 alpha Antibody [NBP2-54680] - Staining of human colon shows strong cytoplasmic and membranous positivity in glandular cells.

Product Details

Summary
Reactivity Hu, Mu, RtSpecies Glossary
Applications IHC, IHC-P
Clonality
Polyclonal
Host
Rabbit
Conjugate
Unconjugated

Order Details

IRE1 alpha Antibody Summary

Immunogen
This IRE1 alpha antibody was developed against a Recombinant Protein corresponding to amino acids: VTIGDKGECVITPSTDVKFDPGLKSKNKLNYLRNYWLLIGHHETPLSASTKMLERFPNNLPKHRENVIPADSEKKSFEEVINLVDQTSENAPTTVSRDVEEKPAHAPARPEAPVDSMLKDMATIILSTFLLIGWVA
Specificity
Specificity of human IRE1 alpha antibody verified on a Protein Array containing target protein plus 383 other non-specific proteins.
Predicted Species
Mouse (90%), Rat (91%). Backed by our 100% Guarantee.
Isotype
IgG
Clonality
Polyclonal
Host
Rabbit
Gene
ERN1
Purity
Immunogen affinity purified
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.

Applications/Dilutions

Dilutions
  • Immunohistochemistry 1:200 - 1:500
  • Immunohistochemistry-Paraffin 1:200 - 1:500
Application Notes
For IHC-Paraffin, HIER pH 6 retrieval is recommended.
Theoretical MW
110 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
Control Peptide
IRE1 alpha Recombinant Protein Antigen (NBP2-54680PEP)

Packaging, Storage & Formulations

Storage
Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
Buffer
PBS (pH 7.2) and 40% Glycerol
Preservative
0.02% Sodium Azide
Purity
Immunogen affinity purified

Alternate Names for IRE1 alpha Antibody

  • EC 2.7.11
  • endoplasmic reticulum to nucleus signaling 1
  • Endoplasmic reticulum-to-nucleus signaling 1
  • ER to nucleus signalling 1
  • FLJ30999
  • hIRE1p
  • inositol-requiring 1
  • Inositol-requiring protein 1
  • IRE 1a
  • IRE1a
  • ire1-alpha
  • IRE1MGC163279
  • IRE1P
  • MGC163277
  • protein kinase/endoribonuclease
  • serine/threonine-protein kinase/endoribonuclease IRE1

Background

Accumulation of misfolded proteins in the endoplasmic reticulum (ER) activates the unfolded protein response (UPR) and upregulates ER molecular chaperones in order to cope with ER stress. UPR is initiated by three ER-localized protein sensors: PERK (PKR-like ER kinase), ATF (activating transcription factor 6), and IRE1 alpha (inositol-requiring enzyme 1 alpha) (1). IRE1 alpha is correlated with X-box binding protein (XBP1) as a potent UPR transcriptional activator (2).

Transcriptional activation of UPR-responsive genes are regulated by the ATF6 and IRE1-XBP1 pathways, which are often regulated by HIFs and contribute to cell survival under ER hypoxic stress (3). UPR signaling can a) inhibit protein translation to restore cell function, b) activate signaling to increase production of molecular chaperones for protein folding, and c) initiate ubiquitination signaling that leads to degradation of misfolded proteins in ER.

IRE1 alpha acts as the sensor of unfolded proteins in the ER. IRE1 alpha not only promotes cell survival but can initiate apoptosis when accumulation of unfolded proteins in the ER causes stress. IRE1 alpha is essential for viability under stress conditions that cause unfolded proteins to accumulate in the ER. IRE1 alpha is a transmembrane protein that has both serine-threonine kinase and endoribonuclease activities and has a theoretical molecular weight of 110 kDa. When detecting phospho-IRE1 alpha, it is recommended to normalize its band intensity with total IRE1 alpha.

References

1. Zheng, W., Xie, W., Yin, D., Luo, R., Liu, M., & Guo, F. (2019). ATG5 and ATG7 induced autophagy interplays with UPR via PERK signaling. Cell Commun Signal, 17(1), 42. doi:10.1186/s12964-019-0353-3

2. Cho, Y. M., Kim, D. H., Lee, K. H., Jeong, S. W., & Kwon, O. J. (2018). The IRE1alpha-XBP1s pathway promotes insulin-stimulated glucose uptake in adipocytes by increasing PPARgamma activity. Exp Mol Med, 50(8), 102. doi:10.1038/s12276-018-0131-0

3. Xia, Z., Wu, S., Wei, X., Liao, Y., Yi, P., Liu, Y.,... Liu, J. (2019). Hypoxic ER stress suppresses beta-catenin expression and promotes cooperation between the transcription factors XBP1 and HIF1alpha for cell survival. J Biol Chem, 294(37), 13811-13821. doi:10.1074/jbc.RA119.008353

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Blogs on IRE1 alpha.

Analysis of Total & pSer724 IRE1 alpha, the Sensor of ER Stress
Inositol-requiring protein 1/IRE1 alpha (also called Endoplasmic Reticulum to Nucleus Signaling 1/ERN1; predicted mol wt 110 kDa) is a serine-threonine protein kinase/endoribonuclease which plays a highly critical role in unfolded protein response/U...  Read full blog post.

IRE1 alpha dependent apoptotic-signaling pathway
Despite in depth characterization of the role of IRE1 alpha (inositol-requiring enzyme 1 alpha) in activating the unfolded protein response (UPR) in the ER - little is known about the molecular mechanisms by which this ER protein has shown to reg...  Read full blog post.

IRE1 alpha (inositol-requiring enzyme 1 alpha)
The unfolded protein response (UPR) is a eukaryotic cell process that addresses ER stress. UPR is initiated by three ER-localized sensors: PKR-like ER kinase (PERK), activating transcription factor 6 (ATF6), and inositol-requiring enzyme 1 alpha (...  Read full blog post.

IRE1 alpha and ER Stress: Keys to Disease Progression Pathways
Inositol Requiring Enzyme 1 alpha (IRE1 alpha) is a transmembrane-RNase with an endoplasmic reticulum (ER) luminal sensor domain and cytosolic kinase and ribonuclease domains. IRE1 also plays a central role in the ER stress response (1). In a recent s...  Read full blog post.

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Bioinformatics

Gene Symbol ERN1