Helical extension of the neuronal SNARE complex into the membrane.

Helical extension of the neuronal SNARE complex into the membrane.
复制标题

DOI:
10.1038/nature08156
复制
发表时间:
2009-07-23
期刊:
影响因子:
64.8
通讯作者:
Jahn, Reinhard
Jahn, Reinhard
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Stein, Alexander;Weber, Gert;Wahl, Markus C.;Jahn, Reinhard

文献摘要

参考文献

被引文献

相似文献

SNARE(可溶性N-乙基马来酰亚胺敏感因子附着受体)代表在真核细胞的分泌和内吞途径中介导膜融合的进化上保守的蛋白质家族。在膜接触时,这些蛋白质在膜之间反式组装成一束四个α-螺旋,组装时释放的能量被认为是驱动融合。然而,目前还不清楚能量是如何转移到膜上的,以及组装是否在构象上与融合有关。在这里,我们报告的X射线结构的神经元陷阱复合物,包括syntaxin 1A,SNAP-25和synaptobrevin 2,与C-末端接头和跨膜区的分辨率为3.4 μ m。结构表明,组装过程超出了已知的核心-SNARE复合物,导致连续的螺旋束,其通过连接区中的侧链相互作用进一步稳定。我们的研究结果表明,SNARE组装的最后阶段是直接耦合到膜合并。
SNAREs (soluble N-ethylmaleimide-sensitive factor attachment receptors) represent an evolutionarily conserved protein family that mediates membrane fusion in the secretory and endocytic pathways of eukaryotic cells . Upon membrane contact, these proteins assemble in trans between the membranes as a bundle of four α-helices, with the energy released upon assembly being thought to drive fusion . However, it is unclear how the energy is transferred to the membranes and whether assembly is conformationally linked to fusion. Here, we report the X-ray structure of the neuronal SNARE complex, consisting of syntaxin 1A, SNAP-25 and synaptobrevin 2, with the C-terminal linkers and transmembrane regions at a resolution of 3.4 Å. The structure shows that assembly proceeds beyond the already known core-SNARE complex , resulting in a continuous helical bundle that is further stabilized by side-chain interactions in the linker region. Our results suggest that the final phase of SNARE assembly is directly coupled to membrane merger.
DOI: 10.1021/ct700301q
发表时间: 2008-03-01
影响因子: 5.5
作者:
Hess, Berk;Kutzner, Carsten;Lindahl, Erik
通讯作者: Lindahl, Erik
DOI: 10.1107/s0907444904019158
发表时间: 2004-12-01
影响因子: 2.2
作者:
Emsley, P;Cowtan, K
通讯作者: Cowtan, K
DOI: 10.1038/nsb750
发表时间: 2002-02-01
期刊: NATURE STRUCTURAL BIOLOGY
影响因子: --
作者:
Fasshauer, D;Antonin, W;Jahn, R
通讯作者: Jahn, R
DOI: 10.1529/biophysj.105.069617
发表时间: 2006-03-01
影响因子: 3.4
作者:
Dennison, SM;Bowen, ME;Lentz, BR
通讯作者: Lentz, BR
DOI: 10.1091/mbc.e07-02-0148
发表时间: 2008-02-01
影响因子: 3.3
作者:
Lam, Alice D.;Tryoen-Toth, Petra;Stuenkel, Edward L.
通讯作者: Stuenkel, Edward L.