SV2A-Syt1 interaction controls surface nanoclustering and access to recycling synaptic vesicles
SV2A-Syt1 interaction controls surface nanoclustering and access to recycling synaptic vesicles
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SV2A-Syt1相互作用控制表面纳米簇和回收突触囊泡
DOI:
10.1101/2021.12.08.471864
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Small C
中科院分区:
文献类型:
--
作者:
Small C
Following exocytosis, the recapture of vesicular proteins stranded at the plasma membrane in recycling synaptic vesicles (SVs) is essential to sustain neurotransmission. Nanoclustering is emerging as a mechanism through which proteins may be ‘pre-assembled’ prior to endocytosis, to ensure high fidelity of retrieval for subsequent rounds of vesicle fusion. Here, we used single molecule imaging to examine the nanoclustering of synaptotagmin-1 (Syt1) and synaptic vesicle protein 2A (SV2A). Syt1 forms surface nanoclusters through interaction of its C2B domain (K326/K328) with SV2A, as demonstrated by mutating Syt1 (K326A/K328A) and knocking down endogenous SV2A. Blocking cognate interaction with Syt1 (SV2AT84A) also decreased SV2A clustering. Impaired nanoclustering of Syt1 and SV2A leads to accelerated endocytosis of Syt1, altered intracellular sorting and decreased trafficking of Syt1 to a Rab5-positive endocytic pathway. We conclude that the interaction between SV2A and Syt1 locks both molecules into surface nanoclusters, controlling their entry into recycling SVs.
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影响因子:
16.6
作者:
Gimber N;Tadeus G;Maritzen T;Schmoranzer J;Haucke V
通讯作者:
Haucke V
影响因子:
16.6
作者:
通讯作者:
--
DOI:
10.1073/pnas.1218432110
发表时间:
2013-02-05
影响因子:
11.1
作者:
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通讯作者:
Haucke, Volker
影响因子:
16.2
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Choquet, Daniel
影响因子:
13.6
作者:
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通讯作者:
Cousin MA