Ubiquitin-recognition protein Ufd1 couples the endoplasmic reticulum (ER) stress response to cell cycle control

Meifan Chen, Gustavo J. Gutierrez, Ze'ev A. Ronai

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The ubiquitin-recognition protein Ufd1 facilitates clearance of misfolded proteins through the endoplasmic reticulum (ER)-associated degradation (ERAD) pathway. Here we report that prolonged ER stress represses Ufd1 expression to trigger cell cycle delay, which contributes to ERAD. Remarkably, down-regulation of Ufd1 enhances ubiquitination and destabilization of Skp2 mediated by the anaphase-promoting complex or cyclosome bound to Cdh1 (APC/CCdh1), resulting in accumulation of the cyclin-dependent kinase inhibitor p27 and a concomitant cell cycle delay during the G1 phase that enables more efficient clearance of misfolded proteins. Mechanistically, nuclear Ufd1 recruits the deubiquitinating enzyme USP13 to counteract APC/CCdh1-mediated ubiquitination of Skp2. Our data identify a coordinated cell cycle response to prolonged ER stress through regulation of the Cdh1-Skp2-p27 axis by Ufd1 and USP13.

Original languageEnglish (US)
Pages (from-to)9119-9124
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume108
Issue number22
DOIs
StatePublished - May 31 2011

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Endoplasmic Reticulum Stress
Ubiquitin
Cell Cycle Checkpoints
Anaphase-Promoting Complex-Cyclosome
Cell Cycle
Ubiquitination
Endoplasmic Reticulum-Associated Degradation
Cyclin-Dependent Kinase Inhibitor p27
Proteins
G1 Phase
Down-Regulation

ASJC Scopus subject areas

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Ubiquitin-recognition protein Ufd1 couples the endoplasmic reticulum (ER) stress response to cell cycle control. / Chen, Meifan; Gutierrez, Gustavo J.; Ronai, Ze'ev A.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 108, No. 22, 31.05.2011, p. 9119-9124.

Research output: Contribution to journalArticle

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