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Systemic control of protein synthesis through sequestration of translation and ribosome biogenesis factors during severe heat stress

Environmental stress causes the sequestration of proteins into insoluble deposits including cytoplasmic stress granules (SGs), containing mRNA and a variety of translation factors. Here we systematically identified proteins sequestered in Saccharomyces cerevisiae at 46 °C by a SG co-localization scr...

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Main Authors: Khaimov, Valeria (Author) , Grousl, Tomas (Author) , Theer, Patrick (Author) , Vainshtein, Yevhen (Author) , Gläßer, Christine (Author) , Mongis, Cyril (Author) , Kramer, Günter (Author) , Stoecklin, Georg (Author) , Knop, Michael (Author) , Mogk, Axel (Author) , Bukau, Bernd (Author)
Format: Article (Journal)
Language:English
Published: 17 October 2015
In: FEBS letters
Year: 2015, Volume: 589, Issue: 23, Pages: 3654-3664
ISSN:1873-3468
DOI:10.1016/j.febslet.2015.10.010
Online Access:Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1016/j.febslet.2015.10.010
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Author Notes:Valeria Cherkasov, Tomas Grousl, Patrick Theer, Yevhen Vainshtein, Christine Glässer, Cyril Mongis, Günter Kramer, Georg Stoecklin, Michael Knop, Axel Mogk, Bernd Bukau
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Summary:Environmental stress causes the sequestration of proteins into insoluble deposits including cytoplasmic stress granules (SGs), containing mRNA and a variety of translation factors. Here we systematically identified proteins sequestered in Saccharomyces cerevisiae at 46 °C by a SG co-localization screen and proteomic analysis of insoluble protein fractions. We identified novel SG components including essential aminoacyl-tRNA synthetases. Moreover, we discovered nucleus-associated deposits containing ribosome biogenesis factors. Our study suggests downregulation of cytosolic protein synthesis and nuclear ribosome production at multiple levels through heat shock induced protein sequestrations.
Item Description:Gesehen am 09.08.2017
Physical Description:Online Resource
ISSN:1873-3468
DOI:10.1016/j.febslet.2015.10.010

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