Metaxins are core components of mitochondrial transport adaptor complexes.

Metaxins are core components of mitochondrial transport adaptor complexes.
复制标题

Metaxins 是线粒体转运接头复合物的核心成分

DOI:
10.1038/s41467-020-20346-2
复制
发表时间:
2021-01-04
影响因子:
16.6
通讯作者:
Shen K
Shen K
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Zhao Y;Song E;Wang W;Hsieh CH;Wang X;Feng W;Wang X;Shen K

文献摘要

参考文献

相似文献

线粒体向树突和轴突的运输在神经元的生理和病理生理学中起着重要作用。线粒体外膜蛋白Miro和衔接蛋白TRAKs/米尔顿将线粒体与分子马达连接起来。在这里,我们表明metaxins MTX-1和MTX-2有助于线粒体运输到树突和轴突的C。线虫神经元MTX 1/2与MIRO-1和驱动蛋白轻链KLC-1结合,形成复合物介导基于驱动蛋白1的线粒体运动,其中MTX-1/2是必需的,MIRO-1起辅助作用。我们发现MTX-2、MIRO-1和TRAK-1形成另一种不同的衔接复合物来介导基于动力蛋白的转运。此外,我们发现,线粒体运输树突的失败导致年龄依赖性树突变性。我们认为,MTX-2和MIRO-1构成了这两种马达的适配器核心,而MTX-1和TRAK-1分别指定了驱动蛋白-1和动力蛋白的每个复合物。MTX-1和MTX-2也是人类神经元中线粒体转运所必需的,表明它们在进化上保守的功能。线粒体运输在神经元中受到仔细的调节并且在功能上很重要。在这里,作者筛选C。elegans的异常线粒体分布,并确定metaxin-1和-2,结合米罗和微管马达蛋白,以促进线粒体运输。
Trafficking of mitochondria into dendrites and axons plays an important role in the physiology and pathophysiology of neurons. Mitochondrial outer membrane protein Miro and adaptor proteins TRAKs/Milton link mitochondria to molecular motors. Here we show that metaxins MTX-1 and MTX-2 contribute to mitochondrial transport into both dendrites and axons of C. elegans neurons. MTX1/2 bind to MIRO-1 and kinesin light chain KLC-1, forming a complex to mediate kinesin-1-based movement of mitochondria, in which MTX-1/2 are essential and MIRO-1 plays an accessory role. We find that MTX-2, MIRO-1, and TRAK-1 form another distinct adaptor complex to mediate dynein-based transport. Additionally, we show that failure of mitochondrial trafficking in dendrites causes age-dependent dendrite degeneration. We propose that MTX-2 and MIRO-1 form the adaptor core for both motors, while MTX-1 and TRAK-1 specify each complex for kinesin-1 and dynein, respectively. MTX-1 and MTX-2 are also required for mitochondrial transport in human neurons, indicative of their evolutionarily conserved function. Mitochondrial trafficking is carefully regulated and functionally important in neurons. Here, the authors screen C. elegans for abnormal mitochondrial distribution and identify metaxin-1 and -2, which bind Miro and microtubule motor proteins to promote mitochondrial trafficking.
DOI: 10.1038/nature10648
发表时间: 2011-11-06
期刊: NATURE
影响因子: 64.8
作者:
Kriks, Sonja;Shim, Jae-Won;Piao, Jinghua;Ganat, Yosif M.;Wakeman, Dustin R.;Xie, Zhong;Carrillo-Reid, Luis;Auyeung, Gordon;Antonacci, Chris;Buch, Amanda;Yang, Lichuan;Beal, M. Flint;Surmeier, D. James;Kordower, Jeffrey H.;Tabar, Viviane;Studer, Lorenz
通讯作者: Studer, Lorenz
DOI: 10.1083/jcb.200601067
发表时间: 2006-05-22
期刊: The Journal of cell biology
影响因子: --
作者:
Glater EE;Megeath LJ;Stowers RS;Schwarz TL
通讯作者: Schwarz TL
征素介导的线粒体沿神经元过程的顺行转运。
DOI: 10.1083/jcb.200506042
发表时间: 2005-09-12
影响因子: 7.8
作者:
Cai, Qian;Gerwin, Claudia;Sheng, Zu-Hang
通讯作者: Sheng, Zu-Hang
DOI: 10.1016/j.cophys.2018.03.009
发表时间: 2018-06
影响因子: 2.5
作者:
Lee A;Hirabayashi Y;Kwon SK;Lewis TL Jr;Polleux F
通讯作者: Polleux F
DOI: 10.1016/j.celrep.2016.09.004
发表时间: 2016-10-04
期刊: Cell reports
影响因子: 8.8
作者:
López-Doménech G;Higgs NF;Vaccaro V;Roš H;Arancibia-Cárcamo IL;MacAskill AF;Kittler JT
通讯作者: Kittler JT