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Genes to Cells
Article
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PubMed Central
Other literature type . 2010
License: CC BY
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Genes to Cells
Article . 2010 . Peer-reviewed
License: Wiley Online Library User Agreement
Data sources: Crossref
Genes to Cells
Article . 2011
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p62/SQSTM1 cooperates with Parkin for perinuclear clustering of depolarized mitochondria

Authors: Okatsu, Kei; Saisho, Keiko; Shimanuki, Midori; Nakada, Kazuto; Shitara, Hiroshi; Sou, Yu-shin; Kimura, Mayumi; +5 Authors

p62/SQSTM1 cooperates with Parkin for perinuclear clustering of depolarized mitochondria

Abstract

PINK1 and Parkin were first identified as the causal genes responsible for familial forms of early‐onset Parkinson’s disease (PD), a prevalent neurodegenerative disorder. PINK1 encodes a mitochondrial serine/threonine protein kinase, whereas Parkin encodes an ubiquitin‐protein ligase. PINK1 and Parkin cooperate to maintain mitochondrial integrity; however, the detailed molecular mechanism of how Parkin‐catalyzed ubiquitylation results in mitochondrial integrity remains an enigma. In this study, we show that Parkin‐catalyzed K63‐linked polyubiquitylation of depolarized mitochondria resulted in ubiquitylated mitochondria being transported along microtubules to cluster in the perinuclear region, which was interfered by pathogenic mutations of Parkin. In addition, p62/SQSTM1 (hereafter referred to as p62) was recruited to depolarized mitochondria after Parkin‐directed ubiquitylation. Intriguingly, deletion of p62 in mouse embryonic fibroblasts resulted in a gross loss of mitochondrial perinuclear clustering but did not hinder mitochondrial degradation. Thus, p62 is required for ubiquitylation‐dependent clustering of damaged mitochondria, which resembles p62‐mediated ‘aggresome’ formation of misfolded/unfolded proteins after ubiquitylation.

Keywords

Cell Nucleus, Protein Folding, Ubiquitin, Ubiquitin-Protein Ligases, Ubiquitination, Original Articles, DNA, Mitochondrial, Mitochondria, Sequestosome-1 Protein, Biocatalysis, Humans, Cells, Cultured, Adaptor Proteins, Signal Transducing, HeLa Cells

  • BIP!
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    citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    373
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 1%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Top 1%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 1%
Powered by OpenAIRE graph
citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
373
Top 1%
Top 1%
Top 1%
Green
bronze