A Stimulation Function of Synaptotagmin-1 in Ternary SNARE Complex Formation Dependent on Munc18 and Munc13.
A Stimulation Function of Synaptotagmin-1 in Ternary SNARE Complex Formation Dependent on Munc18 and Munc13.
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Synaptotagmin-1 在三元 SNARE 复合体形成中的刺激功能依赖于 Munc18 和 Munc13。
DOI:
10.3389/fnmol.2017.00256
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发表时间:
2017
影响因子:
4.8
通讯作者:
Ma C
中科院分区:
文献类型:
--
作者:
Li Y;Wang S;Li T;Zhu L;Xu Y;Ma C
The Ca2+ sensor synaptotagmin-1 (Syt1) plays an essential function in synaptic exocytosis. Recently, Syt1 has been implicated in synaptic vesicle priming, a maturation step prior to Ca2+-triggered membrane fusion that is believed to involve formation of the ternary SNARE complex and require priming proteins Munc18-1 and Munc13-1. However, the mechanisms of Syt1 in synaptic vesicle priming are still unclear. In this study, we found that Syt1 stimulates the transition from the Munc18-1/syntaxin-1 complex to the ternary SNARE complex catalyzed by Munc13-1. This stimulation can be further enhanced in a membrane-containing environment. Further, we showed that Syt1, together with Munc18-1 and Munc13-1, stimulates trans ternary SNARE complex formation on membranes in a manner resistant to disassembly factors NSF and α-SNAP. Disruption of a proposed Syt1/SNARE binding interface strongly abrogated the stimulation function of Syt1. Our results suggest that binding of Syt1 to an intermediate SNARE assembly with Munc18-1 and Munc13-1 is critical for the stimulation function of Syt1 in ternary SNARE complex formation, and this stimulation may underlie the priming function of Syt1 in synaptic exocytosis.
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影响因子:
16.8
作者:
Bhalla, A;Chicka, MC;Chapman, ER
通讯作者:
Chapman, ER
影响因子:
16.8
作者:
Brewer, Kyle D.;Bacaj, Taulant;Cavalli, Andrea;Camilloni, Carlo;Swarbrick, James D.;Liu, Jin;Zhou, Amy;Zhou, Peng;Barlow, Nicholas;Xu, Junjie;Seven, Alpay B.;Prinslow, Eric A.;Voleti, Rashmi;Haeussinger, Daniel;Bonvin, Alexandre M. J. J.;Tomchick, Diana R.;Vendruscolo, Michele;Graham, Bim;Suedhof, Thomas C.;Rizo, Josep
通讯作者:
Rizo, Josep
DOI:
10.1126/science.1230473
发表时间:
2013-01-25
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Ma C;Su L;Seven AB;Xu Y;Rizo J
通讯作者:
Rizo J
影响因子:
16.2
作者:
Burgalossi, Andrea;Jung, Sangyong;Rhee, Jeong-Seop
通讯作者:
Rhee, Jeong-Seop
影响因子:
5.3
作者:
Luo, Fujun;Bacaj, Taulant;Suedhof, Thomas C.
通讯作者:
Suedhof, Thomas C.