Imaging single endocytic events reveals diversity in clathrin, dynamin and vesicle dynamics.
Imaging single endocytic events reveals diversity in clathrin, dynamin and vesicle dynamics.
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成像单个内吞事件揭示了网格蛋白,动力蛋白和囊泡动力学的多样性。
DOI:
10.1111/j.1600-0854.2011.01235.x
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发表时间:
2011-10
期刊:
影响因子:
--
通讯作者:
Simon SM
中科院分区:
文献类型:
--
作者:
Mattheyses AL;Atkinson CE;Simon SM
The dynamics of clathrin mediated endocytosis can be assayed using fluorescently tagged proteins and total internal reflection (TIR) fluorescence microscopy. Many of these proteins, including clathrin and dynamin, are soluble and changes in fluorescence intensity can be attributed either to membrane/vesicle movement or to changes in the numbers of individual molecules. It is important for assays to discriminate between physical membrane events and the dynamics of molecules. Two physical events in endocytosis were investigated: vesicle scission from the plasma membrane and vesicle internalization. Single vesicle analysis allowed the characterization of dynamin and clathrin dynamics relative to scission and internalization. We show that vesicles remain proximal to the plasma membrane for variable amounts of time following scission, and that uncoating of clathrin can happen before or after vesicle internalization. The dynamics of dynamin also vary with respect to scission. Results from assays based on physical events suggest that disappearance of fluorescence from the evanescent field should be re-evaluated as an assay for endocytosis. These results illustrate the heterogeneity of behaviors of endocytic vesicles and the importance establishing suitable evaluation criteria for biophysical processes.
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影响因子:
9.8
作者:
Loerke D;Mettlen M;Yarar D;Jaqaman K;Jaqaman H;Danuser G;Schmid SL
通讯作者:
Schmid SL
DOI:
10.1083/jcb.84.3.560
发表时间:
1980-03
期刊:
The Journal of cell biology
影响因子:
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