Synaptic ribbon: Conveyor belt or safety belt?

被引:119
作者
Parsons, TD [1 ]
Sterling, P
机构
[1] Univ Penn, Sch Vet Med, Dept Clin Studies, New Bolton Ctr, Philadelphia, PA 19104 USA
[2] Univ Penn, Sch Med, Dept Otorhinolaryngol Head & Neck Surg, Philadelphia, PA 19104 USA
[3] Univ Penn, Sch Med, Dept Neurosci, Philadelphia, PA 19104 USA
关键词
D O I
10.1016/S0896-6273(03)00062-X
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The synaptic ribbon in neurons that release transmitter via graded potentials has been considered as a conveyor belt that actively moves vesicles toward their release sites. But evidence has accumulated to the contrary, and it now seems plausible that the ribbon serves instead as a safety belt to tether vesicles stably in mutual contact and thus facilitate multivesicular release by compound exocytosis.
引用
收藏
页码:379 / 382
页数:4
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