The Unfolded Protein Response Triggers Site-Specific Regulatory Ubiquitylation of 40S Ribosomal Proteins.
The Unfolded Protein Response Triggers Site-Specific Regulatory Ubiquitylation of 40S Ribosomal Proteins.
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DOI:
10.1016/j.molcel.2015.04.026
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发表时间:
2015-07-02
期刊:
影响因子:
16
通讯作者:
Bennett, Eric J.
中科院分区:
文献类型:
--
作者:
Higgins, Renee;Gendron, Joshua M.;Rising, Lisa;Mak, Raymond;Webb, Kristofor;Kaiser, Stephen E.;Zuzow, Nathan;Riviere, Paul;Yang, Bing;Fenech, Emma;Tang, Xin;Lindsay, Scott A.;Christianson, John C.;Hampton, Randolph Y.;Wasserman, Steven A.;Bennett, Eric J.
Insults to endoplasmic reticulum (ER) homeostasis activate the unfolded protein response (UPR), which elevates protein folding and degradation capacity and attenuates protein synthesis. While a role for ubiquitin in regulating the degradation of misfolded ER-resident proteins is well described, ubiquitin-dependent regulation of translational reprogramming during the UPR remains uncharacterized. Using global quantitative ubiquitin proteomics, we identify evolutionarily conserved, site-specific regulatory ubiquitylation of 40S ribosomal proteins. We demonstrate that these events occur on assembled cytoplasmic ribosomes and are stimulated by both UPR activation and translation inhibition. We further show that ER stress-stimulated regulatory 40S ribosomal ubiquitylation occurs on a timescale similar to eIF2α phosphorylation, is dependent upon PERK signaling, and is required for optimal cell survival during chronic UPR activation. In total, these results reveal regulatory 40S ribosomal ubiquitylation as a previously uncharacterized and important facet of eukaryotic translational control.
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影响因子:
16.6
作者:
Back SH;Kaufman RJ
通讯作者:
Kaufman RJ
DOI:
10.1007/978-1-61779-005-8_19
发表时间:
2011
期刊:
Methods in molecular biology (Clifton, N.J.)
影响因子:
--
作者:
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通讯作者:
Nicchitta, Christopher V
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通讯作者:
Ban N
影响因子:
7.7
作者:
Andreev DE;O'Connor PB;Fahey C;Kenny EM;Terenin IM;Dmitriev SE;Cormican P;Morris DW;Shatsky IN;Baranov PV
通讯作者:
Baranov PV
影响因子:
16
作者:
Harding, HP;Zhang, YH;Ron, D
通讯作者:
Ron, D