Involvement of mitochondrial dynamics in the segregation of mitochondrial matrix proteins during stationary phase mitophagy.

Involvement of mitochondrial dynamics in the segregation of mitochondrial matrix proteins during stationary phase mitophagy.
复制标题

DOI:
10.1038/ncomms3789
复制
发表时间:
2013
影响因子:
16.6
通讯作者:
Dengjel, Joern
Dengjel, Joern
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Abeliovich, Hagai;Zarei, Mostafa;Rigbolt, Kristoffer T. G.;Youle, Richard J.;Dengjel, Joern

文献摘要

参考文献

被引文献

相似文献

线粒体自噬,即线粒体的自噬降解,是真核细胞中重要的管家功能,线粒体自噬缺陷与衰老现象和几种神经退行性疾病相关。关于线粒体自噬的一个中心机制问题是线粒体是否被大量消耗,或者活性过程是否将线粒体网络中的缺陷分子与功能分子分离,从而允许更有效的剔除机制。在这里,我们结合联合收割机的蛋白质组学研究与分子遗传学和细胞生物学的方法,以确定是否发生这样的分离过程中的酵母线粒体。我们发现,不同的线粒体基质蛋白进行mitophagic降解在明显不同的速度,支持主动隔离假说。这些不同的降解速率取决于线粒体动力学,这表明一种机制耦合弱物理分离与线粒体动力学,以实现蒸馏样的效果。在协议中,mitophagic降解率与特定基质蛋白的物理分离程度密切相关。
Mitophagy, the autophagic degradation of mitochondria, is an important housekeeping function in eukaryotic cells and defects in mitophagy correlate with ageing phenomena and with several neurodegenerative disorders. A central mechanistic question regarding mitophagy is whether mitochondria are consumed en masse, or whether an active process segregates defective molecules from functional ones within the mitochondrial network, thus allowing a more efficient culling mechanism. Here, we combine a proteomic study with a molecular genetic and cell biology approach to determine whether such a segregation process occurs in yeast mitochondria. We find that different mitochondrial matrix proteins undergo mitophagic degradation at distinctly different rates, supporting the active segregation hypothesis. These differential degradation rates depend on mitochondrial dynamics, suggesting a mechanism coupling weak physical segregation with mitochondrial dynamics to achieve a distillation-like effect. In agreement, the rates of mitophagic degradation strongly correlate with the degree of physical segregation of specific matrix proteins.
DOI: 10.1038/ncb2220
发表时间: 2011-05
影响因子: 21.3
作者:
通讯作者: --
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
DOI: 10.1093/emboj/18.21.6005
发表时间: 1999-11-01
期刊: EMBO JOURNAL
影响因子: 11.4
作者:
Abeliovich, H;Darsow, T;Emr, SD
通讯作者: Emr, SD
DOI: 10.1038/13014
发表时间: 1999-09-01
影响因子: 21.3
作者:
Bleazard, W;McCaffery, JM;Shaw, JM
通讯作者: Shaw, JM
DOI: 10.1083/jcb.201210111
发表时间: 2013-01-21
期刊: The Journal of cell biology
影响因子: --
作者:
Lazarou M;Narendra DP;Jin SM;Tekle E;Banerjee S;Youle RJ
通讯作者: Youle RJ