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Keyword - Unfolded protein response (KW-0834)


Protein involved in the unfolded protein response. An accumulation of unfolded proteins in the ER lumen triggers a stress response, resulting in the transcriptional induction in the nucleus of a set of genes, whose products are involved in protein folding, assembly and modification as well as in phospholipid biosynthesis. The unfolded protein response (UPR) is the intracellular pathway that mediates signaling from the endoplasmic reticulum (ER) to the nucleus. UPR is also tightly linked to ER-associated protein degradation (ERAD). UPR is a ubiquitous mechanism observed in all eukaryotes from humans to yeast.


  • ER stress pathway
  • ER stress response
  • UPR


Biological process

Gene Ontology


response to unfolded protein [ GO:0006986 ]


Unfolded protein responseBiological process
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