Dynein light chain regulates axonal trafficking and synaptic levels of Bassoon.

Dynein light chain regulates axonal trafficking and synaptic levels of Bassoon.
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DOI:
10.1083/jcb.200807155
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发表时间:
2009-04-20
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Gundelfinger ED
Gundelfinger ED
中科院分区:
其他
文献类型:
--
作者:
Fejtova A;Davydova D;Bischof F;Lazarevic V;Altrock WD;Romorini S;Schöne C;Zuschratter W;Kreutz MR;Garner CC;Ziv NE;Gundelfinger ED

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Bassoon and the related protein Piccolo are core components of the presynaptic cytomatrix at the active zone of neurotransmitter release. They are transported on Golgi-derived membranous organelles, called Piccolo-Bassoon transport vesicles (PTVs), from the neuronal soma to distal axonal locations, where they participate in assembling new synapses. Despite their net anterograde transport, PTVs move in both directions within the axon. How PTVs are linked to retrograde motors and the functional significance of their bidirectional transport are unclear. In this study, we report the direct interaction of Bassoon with dynein light chains (DLCs) DLC1 and DLC2, which potentially link PTVs to dynein and myosin V motor complexes. We demonstrate that Bassoon functions as a cargo adapter for retrograde transport and that disruption of the Bassoon–DLC interactions leads to impaired trafficking of Bassoon in neurons and affects the distribution of Bassoon and Piccolo among synapses. These findings reveal a novel function for Bassoon in trafficking and synaptic delivery of active zone material.
Dynein介导的体内货物运输。开关控制旅行距离。
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