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Identification
HMDB Protein ID HMDBP08718
Secondary Accession Numbers
  • 14440
Name Serine/threonine-protein kinase/endoribonuclease IRE1
Synonyms
  1. Endoplasmic reticulum-to-nucleus signaling 1
  2. Endoribonuclease
  3. IRE1a
  4. Inositol-requiring protein 1
  5. Ire1-alpha
  6. Serine/threonine-protein kinase
  7. hIRE1p
Gene Name ERN1
Protein Type Unknown
Biological Properties
General Function Involved in endoribonuclease activity, producing 5'-phosphomonoesters
Specific 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
Pathways Not Available
Reactions Not Available
GO Classification
Function
hydrolase activity, acting on ester bonds
binding
catalytic activity
endoribonuclease activity, producing 5'-phosphomonoesters
hydrolase activity
transferase activity
transferase activity, transferring phosphorus-containing groups
kinase activity
nucleoside binding
purine nucleoside binding
adenyl nucleotide binding
adenyl ribonucleotide binding
atp binding
protein kinase activity
protein serine/threonine kinase activity
nuclease activity
endonuclease activity
endoribonuclease activity
Process
rna metabolic process
phosphorus metabolic process
phosphate metabolic process
metabolic process
macromolecule metabolic process
cellular macromolecule metabolic process
rna processing
cellular metabolic process
protein amino acid phosphorylation
mrna processing
phosphorylation
Cellular Location
  1. Endoplasmic reticulum membrane
  2. Single-pass type I membrane protein
Gene Properties
Chromosome Location Chromosome:1
Locus 17q24.2
SNPs ERN1
Gene Sequence
>2934 bp
ATGCCGGCCCGGCGGCTGCTGCTGCTGCTGACGCTGCTGCTGCCCGGCCTCGGGATTTTT
GGAAGTACCAGCACAGTGACGCTTCCTGAAACCTTGTTGTTTGTGTCAACGCTGGATGGA
AGTTTGCATGCTGTCAGCAAGAGGACAGGCTCAATCAAATGGACTTTAAAAGAAGATCCA
GTCCTGCAGGTCCCAACACATGTGGAAGAGCCTGCCTTTCTCCCAGATCCTAATGATGGC
AGCCTGTATACGCTTGGAAGCAAGAATAATGAAGGCCTGACGAAACTTCCTTTTACCATC
CCAGAATTGGTGCAGGCATCCCCATGCCGAAGTTCAGATGGAATCCTCTACATGGGTAAA
AAGCAGGACATCTGGTATGTTATTGACCTCCTGACCGGAGAGAAGCAGCAGACTTTGTCA
TCGGCCTTTGCAGATAGTCTCTGCCCATCAACCTCTCTTCTGTATCTTGGGCGAACAGAA
TACACCATCACCATGTACGACACCAAAACCCGAGAGCTCCGGTGGAATGCCACCTACTTT
GACTATGCGGCCTCACTGCCTGAGGACGACGTGGACTACAAGATGTCCCACTTTGTGTCC
AATGGTGATGGGCTGGTGGTGACTGTGGACAGTGAATCTGGGGACGTCCTGTGGATCCAA
AACTACGCCTCCCCTGTGGTGGCCTTTTATGTCTGGCAGCGGGAGGGTCTGAGGAAGGTG
ATGCACATCAATGTCGCTGTGGAGACCCTGCGCTATCTGACCTTCATGTCTGGGGAGGTG
GGGCGCATCACAAAGTGGAAGTACCCGTTCCCCAAGGAGACAGAGGCCAAGAGCAAGCTG
ACGCCCACTCTGTATGTTGGGAAATACTCTACCAGCCTCTATGCCTCTCCCTCAATGGTA
CACGAGGGGGTTGCTGTCGTGCCCCGCGGCAGCACACTTCCTTTGCTGGAAGGGCCCCAG
ACTGATGGCGTCACCATTGGGGACAAGGGGGAGTGTGTGATCACGCCCAGCACGGACGTC
AAGTTTGATCCCGGACTCAAAAGCAAGAACAAGCTCAACTACTTGAGGAATTACTGGCTT
CTGATAGGACACCATGAAACCCCACTGTCTGCGTCTACCAAGATGCTGGAGAGATTTCCC
AACAATCTACCCAAACATCGGGAAAATGTGATTCCTGCTGATTCAGAGAAAAAGAGCTTT
GAGGAAGTTATCAACCTGGTTGACCAGACTTCAGAAAACGCACCTACCACCGTGTCTCGG
GATGTGGAGGAGAAGCCCGCCCATGCCCCTGCCCGGCCCGAGGCCCCCGTGGACTCCATG
CTTAAGGACATGGCTACCATCATCCTGAGCACCTTCCTGCTGATTGGCTGGGTGGCCTTC
ATCATCACCTATCCCCTGAGCATGCATCAGCAGCAGCAGCTCCAGCACCAGCAGTTCCAG
AAGGAACTGGAGAAGATCCAGCTCCTGCAGCAGCAGCAGCAGCAGCTGCCCTTCCACCCA
CCTGGAGACACGGCTCAGGACGGCGAGCTCCTGGACACGTCTGGCCCGTACTCAGAGAGC
TCGGGCACCAGCAGCCCCAGCACGTCCCCCAGGGCCTCCAACCACTCGCTCTGCTCCGGC
AGCTCTGCCTCCAAGGCTGGCAGCAGCCCCTCCCTGGAACAAGACGATGGAGATGAGGAA
ACCAGCGTGGTGATAGTTGGGAAAATTTCCTTCTGTCCCAAGGATGTCCTGGGCCATGGA
GCTGAGGGCACAATTGTGTACCGGGGCATGTTTGACAACCGCGACGTGGCCGTGAAGAGG
ATCCTCCCCGAGTGTTTTAGCTTCGCAGACCGTGAGGTCCAGCTGTTGCGAGAATCGGAT
GAGCACCCGAACGTGATCCGCTACTTCTGCACGGAGAAGGACCGGCAATTCCAGTACATT
GCCATCGAGCTGTGTGCAGCCACCCTGCAAGAGTATGTGGAGCAGAAGGACTTTGCGCAT
CTCGGCCTGGAGCCCATCACCTTGCTGCAGCAGACCACCTCGGGCCTGGCCCACCTCCAC
TCCCTCAACATCGTTCACAGAGACCTAAAGCCACACAACATCCTCATATCCATGCCCAAT
GCACACGGCAAGATCAAGGCCATGATCTCCGACTTTGGCCTCTGCAAGAAGCTGGCAGTG
GGCAGACACAGTTTCAGCCGCCGATCTGGGGTGCCTGGCACAGAAGGCTGGATCGCTCCA
GAGATGCTGAGCGAAGACTGTAAGGAGAACCCTACCTACACGGTGGACATCTTTTCTGCA
GGCTGCGTCTTTTACTACGTAATCTCTGAGGGCAGCCACCCTTTTGGCAAGTCCCTGCAG
CGGCAGGCCAACATCCTCCTGGGTGCCTGCAGCCTTGACTGCTTGCACCCAGAGAAGCAC
GAAGACGTCATTGCACGTGAATTGATAGAGAAGATGATTGCGATGGATCCTCAGAAACGC
CCCTCAGCGAAGCATGTGCTCAAACACCCGTTCTTCTGGAGCCTAGAGAAGCAGCTCCAG
TTCTTCCAGGACGTGAGCGACAGAATAGAAAAGGAATCCCTGGATGGCCCGATCGTGAAG
CAGTTAGAGAGAGGCGGGAGAGCCGTGGTGAAGATGGACTGGCGGGAGAACATCACTGTC
CCCCTCCAGACAGACCTGCGTAAATTCAGGACCTATAAAGGTGGTTCTGTCAGAGATCTC
CTCCGAGCCATGAGAAATAAGAAGCACCACTACCGGGAGCTGCCTGCAGAGGTGCGGGAG
ACGCTGGGGTCCCTCCCCGACGACTTCGTGTGCTACTTCACATCTCGCTTCCCCCACCTC
CTCGCACACACCTACCGGGCCATGGAGCTGTGCAGCCACGAGAGACTCTTCCAGCCCTAC
TACTTCCACGAGCCCCCAGAGCCCCAGCCCCCAGTGACTCCAGACGCCCTCTGA
Protein Properties
Number of Residues 977
Molecular Weight 109734.1
Theoretical pI 6.39
Pfam Domain Function
Signals
  • 1-18
Transmembrane Regions
  • 444-464
Protein Sequence
>Serine/threonine-protein kinase/endoribonuclease IRE1
MPARRLLLLLTLLLPGLGIFGSTSTVTLPETLLFVSTLDGSLHAVSKRTGSIKWTLKEDP
VLQVPTHVEEPAFLPDPNDGSLYTLGSKNNEGLTKLPFTIPELVQASPCRSSDGILYMGK
KQDIWYVIDLLTGEKQQTLSSAFADSLCPSTSLLYLGRTEYTITMYDTKTRELRWNATYF
DYAASLPEDDVDYKMSHFVSNGDGLVVTVDSESGDVLWIQNYASPVVAFYVWQREGLRKV
MHINVAVETLRYLTFMSGEVGRITKWKYPFPKETEAKSKLTPTLYVGKYSTSLYASPSMV
HEGVAVVPRGSTLPLLEGPQTDGVTIGDKGECVITPSTDVKFDPGLKSKNKLNYLRNYWL
LIGHHETPLSASTKMLERFPNNLPKHRENVIPADSEKKSFEEVINLVDQTSENAPTTVSR
DVEEKPAHAPARPEAPVDSMLKDMATIILSTFLLIGWVAFIITYPLSMHQQQQLQHQQFQ
KELEKIQLLQQQQQQLPFHPPGDTAQDGELLDTSGPYSESSGTSSPSTSPRASNHSLCSG
SSASKAGSSPSLEQDDGDEETSVVIVGKISFCPKDVLGHGAEGTIVYRGMFDNRDVAVKR
ILPECFSFADREVQLLRESDEHPNVIRYFCTEKDRQFQYIAIELCAATLQEYVEQKDFAH
LGLEPITLLQQTTSGLAHLHSLNIVHRDLKPHNILISMPNAHGKIKAMISDFGLCKKLAV
GRHSFSRRSGVPGTEGWIAPEMLSEDCKENPTYTVDIFSAGCVFYYVISEGSHPFGKSLQ
RQANILLGACSLDCLHPEKHEDVIARELIEKMIAMDPQKRPSAKHVLKHPFFWSLEKQLQ
FFQDVSDRIEKESLDGPIVKQLERGGRAVVKMDWRENITVPLQTDLRKFRTYKGGSVRDL
LRAMRNKKHHYRELPAEVRETLGSLPDDFVCYFTSRFPHLLAHTYRAMELCSHERLFQPY
YFHEPPEPQPPVTPDAL
GenBank ID Protein 153946421
UniProtKB/Swiss-Prot ID O75460
UniProtKB/Swiss-Prot Entry Name ERN1_HUMAN
PDB IDs Not Available
GenBank Gene ID NM_001433.3
GeneCard ID ERN1
GenAtlas ID ERN1
HGNC ID HGNC:3449
References
General References
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  6. Tirasophon W, Welihinda AA, Kaufman RJ: A stress response pathway from the endoplasmic reticulum to the nucleus requires a novel bifunctional protein kinase/endoribonuclease (Ire1p) in mammalian cells. Genes Dev. 1998 Jun 15;12(12):1812-24. [PubMed:9637683 ]
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