Structural Understanding of ER Quality Control System Mediated by Glucose Tagging

2019 ◽  
Vol 31 (181) ◽  
pp. SE69-SE70
Author(s):  
Tadashi Satoh
Keyword(s):  
Quality Control ◽  
Control System ◽  
Quality Control System ◽  
Er Quality Control

scholarly journals The ART-Rsp5 ubiquitin ligase network comprises a plasma membrane quality control system that protects yeast cells from proteotoxic stress

eLife ◽  
2013 ◽  
Vol 2 ◽  
Author(s):  
Yingying Zhao ◽  
Jason A MacGurn ◽  
Max Liu ◽  
Scott Emr
Keyword(s):  
Quality Control ◽  
Plasma Membrane ◽  
Control System ◽  
Membrane Proteins ◽  
Cell Surface ◽  
Ubiquitin Ligase ◽  
Integral Membrane Proteins ◽  
Quality Control System ◽  
Er Quality Control ◽  
Proteotoxic Stress

Secretory cargo that cannot fold properly in the ER are selectively targeted for removal by a well-studied ER-associated degradation pathway, or ERAD. In contrast, very little is known about post-ER quality control mechanisms for damaged or misfolded integral membrane proteins. Here we describe a quality control function of the Rsp5-ART ubiquitin ligase adaptor network that functions to protect plasma membrane (PM) integrity. Failure to mediate this protective response during heat stress leads to toxic accumulation of misfolded integral membrane proteins at the cell surface, which causes loss of PM integrity and cell death. Thus, the Rsp5-ART network comprises a PM quality control system that works together with sequential quality control pathways in the ER and Golgi to (i) target the degradation of proteins that have exceeded their functional lifetime due to damage and/or misfolding and (ii) limit the toxic accumulation of specific proteins at the cell surface during proteotoxic stress.

scholarly journals QCloud2: An Improved Cloud-based Quality-Control System for Mass-Spectrometry-based Proteomics Laboratories

2021 ◽  
Author(s):  
Roger Olivella ◽  
Cristina Chiva ◽  
Marc Serret ◽  
Daniel Mancera ◽  
Luca Cozzuto ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Quality Control ◽  
Control System ◽  
Quality Control System
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