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> home > Products > Primary Antibodies > Antibody Collections > Unfolded protein response > ERN1 Antibody
ERN1 Antibody
Purified Mouse Monoclonal Antibody
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- BACKGROUND
Application 
| WB, IHC, E |
|---|---|
| Primary Accession | O75460 |
| Reactivity | Human |
| Host | Mouse |
| Clonality | Monoclonal |
| Clone Names | 9F2 |
| Isotype | IgG1 |
| Calculated MW | 109kDa |
| Description | The protein encoded by this gene is the ER to nucleus signalling 1 protein, a human homologue of the yeast Ire1 gene product. This protein possesses intrinsic kinase activity and an endoribonuclease activity and it is important in altering gene expression as a response to endoplasmic reticulum-based stress signals. |
| Immunogen | Purified recombinant fragment of human ERN1(aa282-433) expressed in E. Coli. |
| Formulation | Ascitic fluid containing 0.03% sodium azide. |
| Gene ID | 2081 |
|---|---|
| Other Names | Serine/threonine-protein kinase/endoribonuclease IRE1, Endoplasmic reticulum-to-nucleus signaling 1, Inositol-requiring protein 1, hIRE1p, Ire1-alpha, IRE1a, Serine/threonine-protein kinase, 2.7.11.1, Endoribonuclease, 3.1.26.-, ERN1 (HGNC:3449) |
| Dilution | WB~~1/500 - 1/2000 IHC~~1/500 - 1/2000 |
| Storage | Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles. |
| Precautions | ERN1 Antibody is for research use only and not for use in diagnostic or therapeutic procedures. |
| Name | ERN1 (HGNC:3449) |
|---|---|
| Function | Serine/threonine-protein kinase and endoribonuclease that acts as a key sensor for the endoplasmic reticulum unfolded protein response (UPR) (PubMed:11175748, PubMed:11779464, PubMed:12637535, PubMed:21317875, PubMed:28128204, PubMed:30118681, PubMed:9637683, PubMed:19328063). 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:21317875, PubMed:24508390). The resulting spliced transcript of XBP1 encodes a transcriptional activator protein that up-regulates expression of UPR target genes (PubMed:11779464, PubMed:21317875, PubMed:24508390). 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). |
| Cellular Location | Endoplasmic reticulum membrane; Single-pass type I membrane protein |
| Tissue Location | Ubiquitously expressed. High levels observed in pancreatic tissue. |
Research Areas
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Application Protocols
Provided below are standard protocols that you may find useful for product applications.
References
1. Biochem Biophys Res Commun. 2004 Apr 30;317(2):390-6. 2. Mol Cell Biol. 2005 Sep;25(17):7522-33. 3. Science. 2007 Nov 9;318(5852):944-9.
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$ 325.00
Cat# AO1379a
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