Trans-SNARE interactions elicit Ca2+ efflux from the yeast vacuole lumen.
Trans-SNARE interactions elicit Ca2+ efflux from the yeast vacuole lumen.
复制标题
跨节相互作用引起酵母液泡腔的Ca2+外排。
DOI:
10.1083/jcb.200310105
复制
发表时间:
2004-01-19
影响因子:
7.8
通讯作者:
Wickner, WT
中科院分区:
文献类型:
--
作者:
Merz, AJ;Wickner, WT
Ca2+ transients trigger many SNARE-dependent membrane fusion events. The homotypic fusion of yeast vacuoles occurs after a release of lumenal Ca2+. Here, we show that trans-SNARE interactions promote the release of Ca2+ from the vacuole lumen. Ypt7p–GTP, the Sec1p/Munc18-protein Vps33p, and Rho GTPases, all of which function during docking, are required for Ca2+ release. Inhibitors of SNARE function prevent Ca2+ release. Recombinant Vam7p, a soluble Q-SNARE, stimulates Ca2+ release. Vacuoles lacking either of two complementary SNAREs, Vam3p or Nyv1p, fail to release Ca2+ upon tethering. Mixing these two vacuole populations together allows Vam3p and Nyv1p to interact in trans and rescues Ca2+ release. Sec17/18p promote sustained Ca2+ release by recycling SNAREs (and perhaps other limiting factors), but are not required at the release step itself. We conclude that trans-SNARE assembly events during docking promote Ca2+ release from the vacuole lumen.
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DOI:
10.1083/jcb.124.3.351
发表时间:
1994-02
期刊:
The Journal of cell biology
影响因子:
--
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通讯作者:
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影响因子:
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发表时间:
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影响因子:
--
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DOI:
10.1083/jcb.200212004
发表时间:
2003-07-21
期刊:
The Journal of cell biology
影响因子:
--
作者:
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