Human Interaction Network Ontology

Last uploaded: June 27, 2014
Preferred Name

Unfolded Protein Response
Synonyms
Definitions

Reviewed: D'Eustachio, P, Matthews, L, Gillespie, ME, 2008-12-02 16:25:31 Reviewed: Urano, F, 2010-04-30 Edited: May, B, Gopinathrao, G, 2008-11-19 19:22:37 Authored: May, B, 2009-06-02 00:51:49 The Unfolded Protein Response (UPR) is a regulatory system that protects the Endoplasmic Reticulum (ER) from overload. The UPR is provoked by the accumulation of improperly folded protein in the ER during times of unusually high secretion activity. Analysis of mutants with altered UPR, however, shows that the UPR is also required for normal development and function of secretory cells.<br>One level at which the URP operates is transcriptional and translational regulation: mobilization of ATF6 and IRE1 leads to increased transcription of genes encoding chaperones, and mobilization of PERK (pancreatic eIF2alpha kinase) leads to phosphorylation of the translation initiation factor eIF2alpha and global down-regulation of protein synthesis. These three regulatory pathways are annotated here.

ID

http://purl.obolibrary.org/obo/HINO_0016049

comment

Reviewed: D'Eustachio, P, Matthews, L, Gillespie, ME, 2008-12-02 16:25:31

Reviewed: Urano, F, 2010-04-30

Edited: May, B, Gopinathrao, G, 2008-11-19 19:22:37

Authored: May, B, 2009-06-02 00:51:49

The Unfolded Protein Response (UPR) is a regulatory system that protects the Endoplasmic Reticulum (ER) from overload. The UPR is provoked by the accumulation of improperly folded protein in the ER during times of unusually high secretion activity. Analysis of mutants with altered UPR, however, shows that the UPR is also required for normal development and function of secretory cells.
One level at which the URP operates is transcriptional and translational regulation: mobilization of ATF6 and IRE1 leads to increased transcription of genes encoding chaperones, and mobilization of PERK (pancreatic eIF2alpha kinase) leads to phosphorylation of the translation initiation factor eIF2alpha and global down-regulation of protein synthesis. These three regulatory pathways are annotated here.

definition source

Pubmed18048764

Reactome, http://www.reactome.org

Pubmed18038217

Pubmed18436705

Pubmed16365312

Pubmed15952902

label

Unfolded Protein Response

located_in

http://purl.obolibrary.org/obo/NCBITaxon_9606

prefixIRI

HINO:0016049

prefLabel

Unfolded Protein Response

seeAlso

GENE ONTOLOGYGO:0030968

ReactomeREACT_18356

Reactome Database ID Release 43381119

subClassOf

http://purl.obolibrary.org/obo/INO_0000021

has_part

http://purl.obolibrary.org/obo/HINO_0016050

http://purl.obolibrary.org/obo/HINO_0016048

http://purl.obolibrary.org/obo/HINO_0016044

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