Translocon component Sec62 acts in endoplasmic reticulum turnover during stress recovery.
Details
Serval ID
serval:BIB_C64A1880105A
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Translocon component Sec62 acts in endoplasmic reticulum turnover during stress recovery.
Journal
Nature cell biology
ISSN
1476-4679 (Electronic)
ISSN-L
1465-7392
Publication state
Published
Issued date
11/2016
Peer-reviewed
Oui
Volume
18
Number
11
Pages
1173-1184
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Publication Status: ppublish
Abstract
The endoplasmic reticulum (ER) is a site of protein biogenesis in eukaryotic cells. Perturbing ER homeostasis activates stress programs collectively called the unfolded protein response (UPR). The UPR enhances production of ER-resident chaperones and enzymes to reduce the burden of misfolded proteins. On resolution of ER stress, ill-defined, selective autophagic programs remove excess ER components. Here we identify Sec62, a constituent of the translocon complex regulating protein import in the mammalian ER, as an ER-resident autophagy receptor. Sec62 intervenes during recovery from ER stress to selectively deliver ER components to the autolysosomal system for clearance in a series of events that we name recovER-phagy. Sec62 contains a conserved LC3-interacting region in the C-terminal cytosolic domain that is required for its function in recovER-phagy, but is dispensable for its function in the protein translocation machinery. Our results identify Sec62 as a critical molecular component in maintenance and recovery of ER homeostasis.
Keywords
Animals, Autophagy, Endoplasmic Reticulum/metabolism, Endoplasmic Reticulum Stress/physiology, Homeostasis, Humans, Membrane Transport Proteins/metabolism, Mice, Molecular Chaperones/metabolism, Protein Biosynthesis/physiology, Protein Transport/physiology, Unfolded Protein Response/physiology
Pubmed
Create date
01/12/2016 9:49
Last modification date
20/08/2019 15:41