A single-vesicle content mixing assay for SNARE-mediated membrane fusion.
A single-vesicle content mixing assay for SNARE-mediated membrane fusion.
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DOI:
10.1038/ncomms1054
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发表时间:
2010-08-10
影响因子:
16.6
通讯作者:
Ha, Taekjip
中科院分区:
文献类型:
--
作者:
Diao, Jiajie;Su, Zengliu;Ishitsuka, Yuji;Lu, Bin;Lee, Kyung Suk;Lai, Ying;Shin, Yeon-Kyun;Ha, Taekjip
The in vitro studies of membrane fusion mediated by soluble N-ethylmaleimide-sensitive factor attachment protein receptors (SNAREs) have primarily been performed by following the mixing of the lipids. However, the formation a of fusion pore and its expansion has been difficult to detect directly due to the leakiness of proteoliposomes, vesicle aggregation and rupture that often complicate the interpretation of ensemble fusion experiments. Fusion pore expansion is an essential step for full collapse fusion and recycling of the fusion machineries. Here, we demonstrate a method to detect the inter-vesicular mixing of large cargoes at the single molecule and vesicle level. The change in FRET signal when a DNA hairpin encapsulated in a surface-tethered vesicle encounters a complementary DNA strand from another vesicle indicates content mixing. We found that that the yeast SNARE complex alone without any accessory proteins can expand the fusion pore large enough to transmit ~ 11 kD cargoes.
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影响因子:
16.8
作者:
通讯作者:
--
DOI:
10.1083/jcb.200203135
发表时间:
2002-07-22
期刊:
The Journal of cell biology
影响因子:
--
作者:
Mahal LK;Sequeira SM;Gureasko JM;Söllner TH
通讯作者:
Söllner TH
影响因子:
3.4
作者:
Dennison, SM;Bowen, ME;Lentz, BR
通讯作者:
Lentz, BR
DOI:
10.1073/pnas.0401779101
发表时间:
2004-05-11
影响因子:
11.1
作者:
Fix, M;Melia, TJ;Simon, SM
通讯作者:
Simon, SM
DOI:
10.1073/pnas.2036428100
发表时间:
2003-12-09
影响因子:
11.1
作者:
Weninger, K;Bowen, ME;Brunger, AT
通讯作者:
Brunger, AT