Protein import motor complex reacts to mitochondrial misfolding by reducing protein import and activating mitophagy.
Protein import motor complex reacts to mitochondrial misfolding by reducing protein import and activating mitophagy.
复制标题
DOI:
10.1038/s41467-022-32564-x
复制
发表时间:
2022-09-02
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
作者:
Mitophagy is essential to maintain mitochondrial function and prevent diseases. It activates upon mitochondria depolarization, which causes PINK1 stabilization on the mitochondrial outer membrane. Strikingly, a number of conditions, including mitochondrial protein misfolding, can induce mitophagy without a loss in membrane potential. The underlying molecular details remain unclear. Here, we report that a loss of mitochondrial protein import, mediated by the pre-sequence translocase-associated motor complex PAM, is sufficient to induce mitophagy in polarized mitochondria. A genome-wide CRISPR/Cas9 screen for mitophagy inducers identifies components of the PAM complex. Protein import defects are able to induce mitophagy without a need for depolarization. Upon mitochondrial protein misfolding, PAM dissociates from the import machinery resulting in decreased protein import and mitophagy induction. Our findings extend the current mitophagy model to explain mitophagy induction upon conditions that do not affect membrane polarization, such as mitochondrial protein misfolding. Mitophagy activation is mediated by mitochondrial depolarization. Here, the authors show that mitochondrial protein misfolding can activate mitophagy in a depolarization-independent manner mediated by a protein import reduction.
登录
查看更多内容
DOI:
10.1083/jcb.201008084
发表时间:
2010-11-29
期刊:
The Journal of cell biology
影响因子:
--
作者:
Jin SM;Lazarou M;Wang C;Kane LA;Narendra DP;Youle RJ
通讯作者:
Youle RJ
影响因子:
17.1
作者:
Di Maio R;Barrett PJ;Hoffman EK;Barrett CW;Zharikov A;Borah A;Hu X;McCoy J;Chu CT;Burton EA;Hastings TG;Greenamyre JT
通讯作者:
Greenamyre JT
影响因子:
46.9
作者:
Doench JG;Fusi N;Sullender M;Hegde M;Vaimberg EW;Donovan KF;Smith I;Tothova Z;Wilen C;Orchard R;Virgin HW;Listgarten J;Root DE
通讯作者:
Root DE
影响因子:
6
作者:
Chen Y;Scarcelli V;Legouis R
通讯作者:
Legouis R
影响因子:
16
作者:
Klann, Kevin;Tascher, Georg;Muench, Christian
通讯作者:
Muench, Christian