The mechanism of Ca2+ -dependent regulation of kinesin-mediated mitochondrial motility.
The mechanism of Ca2+ -dependent regulation of kinesin-mediated mitochondrial motility.
复制标题
Ca2+ 依赖性调节驱动蛋白介导的线粒体运动的机制。
DOI:
10.1016/j.cell.2008.11.046
复制
发表时间:
2009-01-09
期刊:
影响因子:
64.5
通讯作者:
Schwarz TL
中科院分区:
文献类型:
--
作者:
Wang X;Schwarz TL
Cells regulate mitochondrial movement in order to distribute mitochondria properly and thereby meet the changing energy needs of each region of the cell. Ca++ signaling, which halts both anterograde and retrograde mitochondrial motion, is one such regulation. We show that the EF-hands of Miro mediate this arrest and elucidate the regulatory mechanism of the motor kinesin-1. Kinesin-1 remains on mitochondria whether they are stationary, moving anterograde, or moving retrograde and the protein complex that couples kinesin-1 to mitochondria is not dissociated by elevated Ca++. Instead, Ca++-binding to Miro permits Miro to interact directly with the motor domain, thereby preventing motor/microtubule interactions. This switching mechanism allows Ca++ to regulate mitochondrial motility via two kinesin states: an active state in which kinesin is bound to mitochondria via its tail and milton, and an inactive state in which the motor domain binds directly Miro. Disrupting this regulation diminishes neuronal resistance to excitotoxicity.
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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
DOI:
10.1083/jcb.131.5.1315
发表时间:
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期刊:
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影响因子:
--
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通讯作者:
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影响因子:
64.5
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通讯作者:
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影响因子:
4.8
作者:
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通讯作者:
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影响因子:
16.2
作者:
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通讯作者:
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