Complexin and Ca2+ stimulate SNARE-mediated membrane fusion.
Complexin and Ca2+ stimulate SNARE-mediated membrane fusion.
复制标题
DOI:
10.1038/nsmb.1446
复制
发表时间:
2008-07
影响因子:
16.8
通讯作者:
中科院分区:
文献类型:
--
作者:
Ca2+-triggered, synchronized synaptic vesicle fusion underlies interneuronal communication. Complexin is a major binding partner of the SNARE complex, the core fusion machinery at the presynapse. The physiological data on complexin, however, have been at odds with each other, making delineation of its molecular function difficult. Here we report direct observation of two-faceted functions of complexin using the single-vesicle fluorescence fusion assay and EPR. We show that complexin I has two opposing effects on trans-SNARE assembly: inhibition of SNARE complex formation and stabilization of assembled SNARE complexes. Of note, SNARE-mediated fusion is markedly stimulated by complexin, and it is further accelerated by two orders of magnitude in response to an externally applied Ca2+ wave. We suggest that SNARE complexes, complexins and phospholipids collectively form a complex substrate for Ca2+ and Ca2+-sensing fusion effectors in neurotransmitter release.
登录
查看更多内容
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
影响因子:
4.8
作者:
Archer, DA;Graham, ME;Burgoyne, RD
通讯作者:
Burgoyne, RD
影响因子:
16.2
作者:
Chen, XC;Tomchick, DR;Rizo, J
通讯作者:
Rizo, J
DOI:
10.1006/bbrc.1995.2241
发表时间:
1995-08-24
影响因子:
3.1
作者:
ISHIZUKA, T;SAISU, H;ABE, T
通讯作者:
ABE, T