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Cited by 474

The DOI matches its Crossref record; 45 of the 45 references it cites were found in a registry or an index.

Cytosolic proteostasis through importing of misfolded proteins into mitochondria

Open access
Ruan, Linhao, Zhou, Chuankai, Jin, Erli, Kucharavy, Andrei, Zhang, Ying, Wen, Zhihui, Florens, Laurence, Li, Rong·2017·Nature

Abstract

Loss of proteostasis underlies ageing and neurodegeneration characterized by the accumulation of protein aggregates and mitochondrial dysfunction. Although many neurodegenerative-disease-associated proteins can be found in mitochondria, it remains unclear how mitochondrial dysfunction and protein aggregation could be related. In dividing yeast cells, protein aggregates that form under stress or during ageing are preferentially retained by the mother cell, in part through tethering to mitochondria, while the disaggregase Hsp104 helps to dissociate aggregates and thereby enables refolding or degradation of misfolded proteins. Here we show that, in yeast, cytosolic proteins prone to aggregation are imported into mitochondria for degradation. Protein aggregates that form under heat shock contain both cytosolic and mitochondrial proteins and interact with the mitochondrial import complex. Many aggregation-prone proteins enter the mitochondrial intermembrane space and matrix after heat shock, and some do so even without stress. Timely dissolution of cytosolic aggregates requires the mitochondrial import machinery and proteases. Blocking mitochondrial import but not proteasome activity causes a marked delay in the degradation of aggregated proteins. Defects in cytosolic Hsp70s leads to enhanced entry of misfolded proteins into mitochondria and elevated mitochondrial stress. We term this mitochondria-mediated proteostasis mechanism MAGIC (mitochondria as guardian in cytosol) and provide evidence that it may exist in human cells.

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Metadata

Authors
Ruan, L., Zhou, C., Jin, E., Kucharavy, A., Zhang, Y., Wen, Z., Florens, L., & Li, R.
Venue
Nature
Published
2017-03
Volume
543
Issue
7645
Pages
443-446
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2594299422
Cited by
474
References
45
FWCI
19.80
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Cytosolic proteostasis through importing of misfolded proteins into mitochondria. https://app.cochat.ai/papers/10.1038/nature21695
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Ruan, L., Zhou, C., Jin, E., Kucharavy, A., Zhang, Y., Wen, Z., Florens, L., & Li, R. (2017). Cytosolic proteostasis through importing of misfolded proteins into mitochondria. Nature. https://doi.org/10.1038/nature21695

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.