Quality Control in the Endoplasmic Reticulum: Crosstalk between ERAD and UPR pathways.
Quality Control in the Endoplasmic Reticulum: Crosstalk between ERAD and UPR pathways.
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DOI:
10.1016/j.tibs.2018.06.005
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发表时间:
2018-08
影响因子:
13.8
通讯作者:
Qi L
中科院分区:
文献类型:
--
作者:
Hwang J;Qi L
Endoplasmic reticulum (ER)-associated degradation (ERAD) and the unfolded protein response (UPR) are two key quality-control machineries in the cell. ERAD is responsible for the clearance of misfolded proteins in the ER for cytosolic proteasomal degradation, while UPR is activated in response to the accumulation of misfolded proteins. It has long been thought that ERAD is an integral part of UPR because expression of many ERAD genes is controlled by UPR; however, recent studies have suggested that ERAD has a direct role in controlling the protein turnover and abundance of IRE1α, the most conserved UPR sensor. Here, we review recent advances in our understanding of IRE1α activation and propose that UPR and ERAD engage in an intimate crosstalk to define folding capacity and maintain homeostasis in the ER.
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