Endoplasmic reticulum (ER) to nucleus signalling 1; Endoplasmic reticulum to nucleus signaling 1; Endoplasmic reticulum-to-nucleus signaling 1; Endoribonuclease; ER to nucleus signaling 1; ERN 1; Ern1; ERN1_HUMAN; hIRE 1p; hIRE1p; Inositol requiring 1; Inositol requiring 1, S. cerevisiae, homolog of; Inositol requiring enzyme 1, S. cerevisiae, homolog of; Inositol requiring protein 1; inositol-requiring enzyme 1; Inositol-requiring protein 1; IRE 1; IRE 1a; IRE 1P; Ire1 alpha; Ire1-alpha; IRE1a; Ire1alpha; IRE1P; MGC163277; MGC163279; Protein kinase/endoribonuclease; RGD1559716; Serine/threonine protein kinase/endoribonuclease IRE1; Endoplasmic reticulum (ER) to nucleus signalling 1; Endoplasmic reticulum to nucleus signaling 1; Endoplasmic reticulum-to-nucleus signaling 1; Endoribonuclease; ER to nucleus signaling 1; ERN 1; Ern1; ERN1_HUMAN; hIRE 1p; hIRE1p; Inositol requiring 1; Inositol requiring 1, S. cerevisiae, homolog of; Inositol requiring enzyme 1, S. cerevisiae, homolog of; Inositol requiring protein 1; inositol-requiring enzyme 1; Inositol-requiring protein 1; IRE 1; IRE 1a; IRE 1P; Ire1 alpha; Ire1-alpha; IRE1a; Ire1alpha; IRE1P; MGC163277; MGC163279; Protein kinase/endoribonuclease; RGD1559716; Serine/threonine protein kinase/endoribonuclease IRE1;
WB 1:500-1:2000, IHC 1:50-1:200, IF/ICC 1:50-1:200, ELISA(peptide) 1:20000-1:40000
Human, Mouse, Rat
Pig(100%), Bovine(100%), Horse(100%), Sheep(100%), Rabbit(100%), Dog(100%), Chicken(100%), Xenopus(90%)
The antibody is from purified rabbit serum by affinity purification via sequential chromatography on phospho-peptide and non-phospho-peptide affinity columns.
Phospho-IRE1 (Ser724) Antibody detects endogenous levels of IRE1 only when phosphorylated at phospho S724.
Rabbit IgG in phosphate buffered saline , pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.Store at -20 °C.Stable for 12 months from date of receipt.
A synthesized peptide derived from human IRE1 around the phosphorylation site of phospho S724.
Observed Mol.Wt.: 110kDa.
Predicted Mol.Wt.: 110kDa.
Endoplasmic reticulum membrane.
Ubiquitously expressed. High levels observed in pancreatic tissue.
10 20 30 40 50
MPARRLLLLL TLLLPGLGIF GSTSTVTLPE TLLFVSTLDG SLHAVSKRTG
60 70 80 90 100
SIKWTLKEDP VLQVPTHVEE PAFLPDPNDG SLYTLGSKNN EGLTKLPFTI
110 120 130 140 150
PELVQASPCR SSDGILYMGK KQDIWYVIDL LTGEKQQTLS SAFADSLCPS
160 170 180 190 200
TSLLYLGRTE YTITMYDTKT RELRWNATYF DYAASLPEDD VDYKMSHFVS
210 220 230 240 250
NGDGLVVTVD SESGDVLWIQ NYASPVVAFY VWQREGLRKV MHINVAVETL
260 270 280 290 300
RYLTFMSGEV GRITKWKYPF PKETEAKSKL TPTLYVGKYS TSLYASPSMV
310 320 330 340 350
HEGVAVVPRG STLPLLEGPQ TDGVTIGDKG ECVITPSTDV KFDPGLKSKN
360 370 380 390 400
KLNYLRNYWL LIGHHETPLS ASTKMLERFP NNLPKHRENV IPADSEKKSF
410 420 430 440 450
EEVINLVDQT SENAPTTVSR DVEEKPAHAP ARPEAPVDSM LKDMATIILS
460 470 480 490 500
TFLLIGWVAF IITYPLSMHQ QQQLQHQQFQ KELEKIQLLQ QQQQQLPFHP
510 520 530 540 550
PGDTAQDGEL LDTSGPYSES SGTSSPSTSP RASNHSLCSG SSASKAGSSP
560 570 580 590 600
SLEQDDGDEE TSVVIVGKIS FCPKDVLGHG AEGTIVYRGM FDNRDVAVKR
610 620 630 640 650
ILPECFSFAD REVQLLRESD EHPNVIRYFC TEKDRQFQYI AIELCAATLQ
660 670 680 690 700
EYVEQKDFAH LGLEPITLLQ QTTSGLAHLH SLNIVHRDLK PHNILISMPN
710 720 730 740 750
AHGKIKAMIS DFGLCKKLAV GRHSFSRRSG VPGTEGWIAP EMLSEDCKEN
760 770 780 790 800
PTYTVDIFSA GCVFYYVISE GSHPFGKSLQ RQANILLGAC SLDCLHPEKH
810 820 830 840 850
EDVIARELIE KMIAMDPQKR PSAKHVLKHP FFWSLEKQLQ FFQDVSDRIE
860 870 880 890 900
KESLDGPIVK QLERGGRAVV KMDWRENITV PLQTDLRKFR TYKGGSVRDL
910 920 930 940 950
LRAMRNKKHH YRELPAEVRE TLGSLPDDFV CYFTSRFPHL LAHTYRAMEL
CSHERLFQPY YFHEPPEPQP PVTPDAL
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). 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 protein 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).
Autophosphorylated following homodimerization. Autophosphorylation promotes activation of the endoribonuclease domain.ADP-ribosylated by PARP16 upon ER stress, which increases both kinase and endonuclease activities.
Monomer (PubMed:29198525, PubMed:16973740). Homodimer; disulfide-linked; homodimerization takes place in response to endoplasmic reticulum stress and promotes activation of the kinase and endoribonuclease activities (PubMed:12637535, PubMed:24508390, PubMed:16973740, PubMed:21317875). Dimer formation is driven by hydrophobic interactions within the N-terminal luminal domains and stabilized by disulfide bridges (PubMed:12637535). Interacts (via the luminal region) with DNAJB9/ERdj4; interaction takes place in unstressed cells and promotes recruitment of HSPA5/BiP (PubMed:29198525). Interacts (via the luminal region) with HSPA5/BiP; HSPA5/BiP is a negative regulator of the unfolded protein response (UPR) that prevents homodimerization of ERN1/IRE1 and subsequent activation of the protein (PubMed:12637535, PubMed:29198525). Interacts with PDIA6, a negative regulator of the UPR; the interaction is direct and disrupts homodimerization (PubMed:24508390). Interacts with DAB2IP (via PH domain); the interaction occurs in a endoplasmic reticulum stress-induced dependent manner and is required for subsequent recruitment of TRAF2 to ERN1/IRE1 (By similarity). Interacts with TAOK3 and TRAF2 (PubMed:11278723).
Belongs to the protein kinase superfamily. Ser/Thr protein kinase family.
· Cellular Processes > Cell growth and death > Apoptosis.(View pathway)
· Cellular Processes > Transport and catabolism > Autophagy - animal.(View pathway)
· Genetic Information Processing > Folding, sorting and degradation > Protein processing in endoplasmic reticulum.(View pathway)
· Human Diseases > Endocrine and metabolic diseases > Non-alcoholic fatty liver disease (NAFLD).
· Human Diseases > Neurodegenerative diseases > Alzheimer's disease.
Tips: For phospho antibody, we provide phospho peptide（0.5mg) and non-phospho peptide(0.5mg).
Blocking peptides are peptides that bind specifically to the target antibody and block antibody binding. These peptide usually contains the epitope recognized by the antibody. Antibodies bound to the blocking peptide no longer bind to the epitope on the target protein. This mechanism is useful when non-specific binding is an issue, for example, in Western blotting (immunoblot) and immunohistochemistry (IHC). By comparing the staining from the blocked antibody versus the antibody alone, one can see which staining is specific; Specific binding will be absent from the western blot or immunostaining performed with the neutralized antibody.
Synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml DI water for a final concentration of 10 mg/ml.The purity is >90%,tested by HPLC and MS.Storage Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C.
This product is for research use only. Not for use in diagnostic or therapeutic procedures.