Adaptive reorganization of the cytoplasm upon stress in budding yeast
Adaptive reorganization of the cytoplasm upon stress in budding yeast
复制标题
芽殖酵母应激时细胞质的适应性重组
DOI:
10.1101/468454
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发表时间:
--
期刊:
影响因子:
--
通讯作者:
G Pigino
中科院分区:
文献类型:
--
作者:
G. Marini;E. Nüske;W. Leng;S. Alberti;G Pigino
Yeast cells, when exposed to stress, can enter a protective state in which cell division, growth, and metabolism are down-regulated. They remain viable in this state until nutrients become available again. How cells enter this protective survival state and what happens at a cellular and subcellular level are largely unknown. In this study, we used electron tomography to investigate stress-induced ultrastructural changes in the cytoplasm of yeast cells. After ATP depletion, we observed significant cytosolic compaction and extensive cytoplasmic reorganization, as well as the emergence of distinct membrane-bound and membraneless organelles. Using correlative light and electron microscopy, we further demonstrated that one of these membraneless organelles was generated by the reversible polymerization of eukaryotic translation initiation factor 2B, an essential enzyme in the initiation of protein synthesis, into large bundles of filaments. The changes we observe are part of a stress-induced survival strategy, allowing yeast cells to save energy, protect proteins from degradation, and inhibit protein functionality by forming assemblies of proteins.
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影响因子:
3.4
作者:
Dupont, Sebastien;Beney, Laurent;Gervais, Patrick
通讯作者:
Gervais, Patrick
影响因子:
3.3
作者:
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影响因子:
64.5
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Guo Q;Lehmer C;Martínez-Sánchez A;Rudack T;Beck F;Hartmann H;Pérez-Berlanga M;Frottin F;Hipp MS;Hartl FU;Edbauer D;Baumeister W;Fernández-Busnadiego R
通讯作者:
Fernández-Busnadiego R
DOI:
10.1074/jbc.m008041200
发表时间:
2001-02
期刊:
The Journal of Biological Chemistry
影响因子:
--
作者:
Daniel D. Williams;G. Pavitt;C. Proud
通讯作者:
Daniel D. Williams;G. Pavitt;C. Proud
影响因子:
3.9
作者:
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通讯作者:
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