PINK1 disables the anti-fission machinery to segregate damaged mitochondria for mitophagy.
PINK1 disables the anti-fission machinery to segregate damaged mitochondria for mitophagy.
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DOI:
10.1083/jcb.201509003
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发表时间:
2016-04-25
期刊:
影响因子:
--
通讯作者:
Schapira AH
中科院分区:
文献类型:
--
作者:
Pryde KR;Smith HL;Chau KY;Schapira AH
In addition to recruiting Parkin/autophagy receptors to damaged mitochondria, the authors show that PINK1 triggers PKA displacement from AKAP1 after damage to trigger mitochondrial fission in a Parkin-independent manner, suggesting that PINK1 is a master mitophagy regulator. Mitochondrial fission is essential for the degradation of damaged mitochondria. It is currently unknown how the dynamin-related protein 1 (DRP1)–associated fission machinery is selectively targeted to segregate damaged mitochondria. We show that PTEN-induced putative kinase (PINK1) serves as a pro-fission signal, independently of Parkin. Normally, the scaffold protein AKAP1 recruits protein kinase A (PKA) to the outer mitochondrial membrane to phospho-inhibit DRP1. We reveal that after damage, PINK1 triggers PKA displacement from A-kinase anchoring protein 1. By ejecting PKA, PINK1 ensures the requisite fission of damaged mitochondria for organelle degradation. We propose that PINK1 functions as a master mitophagy regulator by activating Parkin and DRP1 in response to damage. We confirm that PINK1 mutations causing Parkinson disease interfere with the orchestration of selective fission and mitophagy by PINK1.
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影响因子:
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通讯作者:
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DOI:
10.15252/embj.201591593
发表时间:
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期刊:
The EMBO journal
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DOI:
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发表时间:
2014-09-01
期刊:
The Journal of cell biology
影响因子:
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通讯作者:
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DOI:
10.1083/jcb.200910140
发表时间:
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期刊:
The Journal of cell biology
影响因子:
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