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Rabbit Recombinant Monoclonal IRE1 phospho S724 antibody. Suitable for Dot, WB and reacts with Synthetic peptide, Human samples. Cited in 118 publications.


Images

Key facts

Isotype

IgG

Host species

Rabbit

Storage buffer

pH: 7.2 - 7.4
Preservative: 0.01% Sodium azide
Constituents: 59% PBS, 40% Glycerol (glycerin, glycerine), 0.05% BSA

Form

Liquid

Clonality

Monoclonal

Immunogen

  • The exact immunogen used to generate this antibody is proprietary information.
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Reactivity data

Select an application
Product promiseTestedExpectedPredictedNot recommended
Flow CytDotWBIHC-PICC/IF
Human
Not recommended
Expected
Tested
Not recommended
Not recommended
Synthetic peptide
Not recommended
Tested
Not recommended
Not recommended
Not recommended

Not recommended
Not recommended

Species

Human

Dilution info

-

Notes

ab172730 - Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody.

Species

Synthetic peptide

Dilution info

-

Notes

-

Tested
Tested

Species

Synthetic peptide

Dilution info

1/1000

Notes

-

Expected
Expected

Species

Human

Dilution info

Use at an assay dependent concentration.

Notes

-

Tested
Tested

Species

Human

Dilution info

1/200 - 1/10000

Notes

-

Not recommended
Not recommended

Species

Synthetic peptide

Dilution info

-

Notes

-

Not recommended
Not recommended

Species

Human, Synthetic peptide

Dilution info

-

Notes

-

Not recommended
Not recommended

Species

Human, Synthetic peptide

Dilution info

-

Notes

-

Target data

Function

Serine/threonine-protein kinase and endoribonuclease that acts as a key sensor for the endoplasmic reticulum unfolded protein response (UPR) (PubMed:11779464, PubMed:11175748, PubMed:12637535, PubMed:9637683, PubMed:21317875, PubMed:28128204). In unstressed cells, the endoplasmic reticulum luminal domain is maintained in its inactive monomeric state by binding to the endoplasmic reticulum chaperone HSPA5/BiP (PubMed:21317875). Accumulation of misfolded proteins in the endoplasmic reticulum causes release of HSPA5/BiP, allowing the luminal domain to homodimerize, promoting autophosphorylation of the kinase domain and subsequent activation of the endoribonuclease activity (PubMed:21317875). The endoribonuclease activity is specific for XBP1 mRNA and excises 26 nucleotides from XBP1 mRNA (PubMed:11779464, PubMed:24508390, PubMed:21317875). The resulting spliced transcript of XBP1 encodes a transcriptional activator protein that up-regulates expression of UPR target genes (PubMed:11779464, PubMed:24508390, PubMed:21317875). Acts as an upstream signal for ER stress-induced GORASP2-mediated unconventional (ER/Golgi-independent) trafficking of CFTR to cell membrane by modulating the expression and localization of SEC16A (PubMed:21884936, PubMed:28067262).

Alternative names

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Rabbit Recombinant Monoclonal IRE1 phospho S724 antibody. Suitable for Dot, WB and reacts with Synthetic peptide, Human samples. Cited in 118 publications.

Alternative names

Key facts

Isotype

IgG

Form

Liquid

Clonality

Monoclonal

Immunogen
  • The exact immunogen used to generate this antibody is proprietary information.
Clone number

EPR5253

Purification technique

Affinity purification Protein A

Dissociation constant

1.1 x 10-10 M

Concentration
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Storage

Shipped at conditions

Blue Ice

Appropriate short-term storage duration

1-2 weeks

Appropriate short-term storage conditions

+4°C

Appropriate long-term storage conditions

-20°C

Aliquoting information

Upon delivery aliquot

Storage information

Stable for 12 months at -20°C

Notes

Mouse, Rat: We have preliminary internal testing data to indicate this antibody may not react with these species. Please contact us for more information.

Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

This product is a recombinant monoclonal antibody, which offers several advantages including:

  • - High batch-to-batch consistency and reproducibility
  • - Improved sensitivity and specificity
  • - Long-term security of supply
  • - Animal-free batch production

For more information, read more on recombinant antibodies.

Supplementary info

Biological function summary

IRE1 is an important regulator in the unfolded protein response (UPR) a cellular reaction to stress in the ER. It operates as part of a complex mechanism facilitating the splicing of X-box binding protein 1 (XBP1) mRNA which results in the production of a potent transcription factor. IRE1 activity helps in restoring normal function of the cell by upregulating genes involved in protein folding secretion and degradation. Its actions are important for maintaining cellular homeostasis during stressful conditions.

Activity summary

The inositol-requiring enzyme 1 (IRE1) also known as ERN1 or IRE1 alpha is a critical endoplasmic reticulum (ER) stress sensor. It has a molecular weight of approximately 110 kDa. IRE1 is expressed in various cell types and tissues particularly in those subject to a high degree of protein synthesis such as the liver pancreas and secretory cells. This protein plays a dual role as both a RNase and a kinase which enables it to respond swiftly to misfolded proteins accumulating in the ER.

Pathways

IRE1 is an integral component of the UPR pathway which works to alleviate ER stress. It interacts closely with other UPR transducers such as activating transcription factor 6 (ATF6) and protein kinase RNA-like ER kinase (PERK). IRE1 connects with the XBP1 pathway facilitating adaptive responses that enhance protein-folding capacity lipid biosynthesis and ER-associated degradation. Altogether these pathways mediate cell survival or apoptosis depending on the severity of the stress.

Associated diseases and disorders

IRE1 has significant involvement in conditions like diabetes and cancer. In the context of diabetes improper UPR signaling due to chronic ER stress leads to insulin resistance and pancreatic beta-cell dysfunction. In cancer IRE1 modulates tumor microenvironment and promotes cancer cell survival under hypoxic conditions. The XBP1 pathway linked with IRE1 also plays a substantial role in these diseases by influencing cell proliferation and apoptosis. Understanding the mechanisms of IRE1 in these conditions might provide therapeutic insights.

Product promise

We are dedicated to supporting your work with high quality reagents and we are here for you every step of the way should you need us.

In the unlikely event of one of our products not working as expected, you are covered by our product promise.

Full details and terms and conditions can be found here:
Terms & Conditions.

3 product images

  • Western blot - Anti-IRE1 (phospho S724) antibody [EPR5253] (ab124945), expandable thumbnail

    Western blot - Anti-IRE1 (phospho S724) antibody [EPR5253] (ab124945)

    Blocking/Diluting buffer and concentration: 5% NFDM/TBST.

    All lanes: Western blot - Anti-IRE1 (phospho S724) antibody [EPR5253] (AB124945) at 1/200 dilution

    Lane 1: HeLa (Human cervix adenocarcinoma epithelial cell) whole cell lysates at 20 µg

    Lane 2: HeLa (Human cervix adenocarcinoma epithelial cell) treated with 1uM Thapsigargin for 1 hour whole cell lysates at 20 µg

    Lane 3: HeLa (Human cervix adenocarcinoma epithelial cell) treated with 1uM Thapsigargin for 6 hours whole cell lysates at 20 µg

    Lane 4: HEK-293 (Human embryonic kidney epithelial cell) whole cell lysates at 20 µg

    Lane 5: HEK-293 (Human embryonic kidney epithelial cell) treated with 10mM DTT for 1 hour whole cell lysates at 20 µg

    Secondary

    All lanes: Western blot - Goat Anti-Rabbit IgG H&L (HRP) (AB97051) at 1/20000 dilution

    Predicted band size: 110 kDa

    Observed band size: 110 kDa

    Exposure time: 180s

  • Dot Blot - Anti-IRE1 (phospho S724) antibody [EPR5253] (ab124945), expandable thumbnail

    Dot Blot - Anti-IRE1 (phospho S724) antibody [EPR5253] (ab124945)

    Dot Blot analysis of Lane 1: IRE1 (pS724) phospho peptide and Lane 2: IRE1 non-phospho peptide labeling IRE1 (phospho S724) with ab124945 at 1/1000 dilution. 5% NFDM/TBST was used as the diluting and blocking buffer. ab97051 Goat Anti-Rabbit IgG, (H+L), Peroxidase conjugated was used as the secondary antibody at 1/100000 dilution. Exposure time: 3 minutes.

  • OI-RD Scanning - Anti-IRE1 (phospho S724) antibody [EPR5253] (ab124945), expandable thumbnail

    OI-RD Scanning - Anti-IRE1 (phospho S724) antibody [EPR5253] (ab124945)

    We have systematically measured KD (the equilibrium dissociation constant between the antibody and its antigen), of more than 840 recombinant antibodies to assess not only their individual KD values but also to see the average affinity of antibody.
    Based on the comparison with published literature values for mouse monoclonal antibodies, Recombinant antibodies appear to be on average 1-2 order of magnitude higher affinity.

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Product protocols

For this product, it's our understanding that no specific protocols are required. You can:

Please note: All products are 'FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC OR THERAPEUTIC PROCEDURES'.

For licensing inquiries, please contact partnerships@abcam.com

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