Dynamic binding mode of a Synaptotagmin-1-SNARE complex in solution.
Dynamic binding mode of a Synaptotagmin-1-SNARE complex in solution.
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DOI:
10.1038/nsmb.3035
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发表时间:
2015-07
影响因子:
16.8
通讯作者:
Rizo, Josep
中科院分区:
文献类型:
--
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
Rapid neurotransmitter release depends on the Ca2+-sensor Synaptotagmin-1 and the SNARE complex formed by synaptobrevin, syntaxin-1 and SNAP-25. How Synaptotagmin-1 triggers release remains unclear, in part because elucidating high-resolution structures of Synaptotagmin-1-SNARE complexes has been challenging. An NMR approach based on lanthanide-induced pseudocontact shifts now reveals a dynamic binding mode where basic residues in the concave side of the Synaptotagmin-1 C2B domain β-sandwich interact with a polyacidic region of the SNARE complex formed by syntaxin-1 and SNAP-25. The physiological relevance of this dynamic structural model is supported by mutations in basic residues of Synaptotagmin-1 that markedly impair SNARE-complex binding in vitro and Synaptotagmin-1 function in neurons. Mutations with milder effects on binding have correspondingly milder effects on Synaptotagmin-1 function. Our results support a model whereby their dynamic interaction facilitates cooperation between synaptotagmin-1 and the SNAREs in inducing membrane fusion.
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影响因子:
16.8
作者:
Araç, D;Chen, XC;Rizo, J
通讯作者:
Rizo, J
影响因子:
25
作者:
Huntwork, Sarah;Littleton, J. Troy
通讯作者:
Littleton, J. Troy
DOI:
10.1523/jneurosci.3214-12.2013
发表时间:
2013-01-02
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Lee J;Guan Z;Akbergenova Y;Littleton JT
通讯作者:
Littleton JT
影响因子:
16.8
作者:
通讯作者:
--
影响因子:
4.8
作者:
CHAPMAN, ER;HANSON, PI;JAHN, R
通讯作者:
JAHN, R