Subcellular localization of the J-protein Sis1 regulates the heat shock response.
Subcellular localization of the J-protein Sis1 regulates the heat shock response.
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J蛋白SIS1的亚细胞定位调节热休克响应。
DOI:
10.1083/jcb.202005165
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发表时间:
2021-01-04
期刊:
影响因子:
--
通讯作者:
Pincus D
中科院分区:
文献类型:
--
作者:
Feder ZA;Ali A;Singh A;Krakowiak J;Zheng X;Bindokas VP;Wolfgeher D;Kron SJ;Pincus D
Feder, Ali et al. reveal that spatial regulation is built into the heat shock response (HSR) in budding yeast. Heat shock triggers the J-protein Sis1 to relocalize away from the nucleoplasm. Loss of Sis1 in the nucleoplasm releases the transcription factor Hsf1 from Hsp70-mediated repression to activate the HSR. Cells exposed to heat shock induce a conserved gene expression program, the heat shock response (HSR), encoding protein homeostasis (proteostasis) factors. Heat shock also triggers proteostasis factors to form subcellular quality control bodies, but the relationship between these spatial structures and the HSR is unclear. Here we show that localization of the J-protein Sis1, a cofactor for the chaperone Hsp70, controls HSR activation in yeast. Under nonstress conditions, Sis1 is concentrated in the nucleoplasm, where it promotes Hsp70 binding to the transcription factor Hsf1, repressing the HSR. Upon heat shock, Sis1 forms an interconnected network with other proteostasis factors that spans the nucleolus and the surface of the endoplasmic reticulum. We propose that localization of Sis1 to this network directs Hsp70 activity away from Hsf1 in the nucleoplasm, leaving Hsf1 free to induce the HSR. In this manner, Sis1 couples HSR activation to the spatial organization of the proteostasis network.
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影响因子:
64.5
作者:
Dai, Chengkai;Whitesell, Luke;Lindquist, Susan
通讯作者:
Lindquist, Susan
影响因子:
4.6
作者:
Kim, HR;Kang, HS;Kim, HD
通讯作者:
Kim, HD
DOI:
10.1038/nrm.2017.73
发表时间:
2018-01
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
Gomez-Pastor R;Burchfiel ET;Thiele DJ
通讯作者:
Thiele DJ
影响因子:
13.8
作者:
Craig EA;Marszalek J
通讯作者:
Marszalek J
影响因子:
16
作者:
Kityk, Roman;Kopp, Juergen;Mayer, Matthias P.
通讯作者:
Mayer, Matthias P.