Aliases for ERN1 Gene
External Ids for ERN1 Gene
Previous GeneCards Identifiers for ERN1 Gene
This gene encodes the transmembrane protein kinase inositol-requiring enzyme 1. The encoded protein contains two functional catalytic domains, a serine/threonine-protein kinase domain and an endoribonuclease domain. This protein functions as a sensor of unfolded proteins in the endoplasmic reticulum (ER) and triggers an intracellular signaling pathway termed the unfolded protein response (UPR). The UPR is an ER stress response that is conserved from yeast to mammals and activates genes involved in degrading misfolded proteins, regulating protein synthesis and activating molecular chaperones. This protein specifically mediates the splicing and activation of the stress response transcription factor X-box binding protein 1. [provided by RefSeq, Aug 2017]
GeneCards Summary for ERN1 Gene
ERN1 (Endoplasmic Reticulum To Nucleus Signaling 1) is a Protein Coding gene. Diseases associated with ERN1 include Chromosome 6Pter-P24 Deletion Syndrome and Alzheimer Disease. Among its related pathways are Protein processing in endoplasmic reticulum and Unfolded Protein Response (UPR). Gene Ontology (GO) annotations related to this gene include protein homodimerization activity and transferase activity, transferring phosphorus-containing groups. An important paralog of this gene is ERN2.
UniProtKB/Swiss-Prot for ERN1 Gene
Senses unfolded proteins in the lumen of the endoplasmic reticulum via its N-terminal domain which leads to enzyme auto-activation (PubMed:9637683, PubMed:11175748, PubMed:12637535). 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 (PubMed:24508390).
Inositol-requiring enzyme 1 (IRE1) is a resident transmembrane ER protein with both kinase and endonuclease domains. Both yeast (IRE) and mammalian (IRE1alpha) homologs are involved in the degradation of misfolded proteins, as part of the unfolded protein response (UPR).