Visualization and quantification of cardiac mitochondrial protein clusters with STED microscopy.

Visualization and quantification of cardiac mitochondrial protein clusters with STED microscopy.
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用sted显微镜检查心脏线粒体蛋白簇的可视化和定量。

DOI:
10.1016/j.mito.2011.09.004
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发表时间:
2012-03
期刊:
影响因子:
4.4
通讯作者:
Toro, Ligia
Toro, Ligia
中科院分区:
生物学3区
文献类型:
--
作者:
Singh, Harpreet;Lu, Rong;Rodriguez, Pedro Felipe Gardeazabal;Wu, Yong;Bopassa, Jean Chrisostome;Stefani, Enrico;Toro, Ligia

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The visualization and quantification of mitochondria-associated proteins with high power microscopy methods is of particular interest to investigate protein architecture in this organelle. We report the usage of a custom-made STimulated Emission Depletion (STED) fluorescence nanoscope with ~20 nm lateral resolution for protein mapping of Percoll-purified viable mitochondria from murine heart. Using this approach, we were able to quantify and resolve distinct protein clusters within mitochondria; specifically, cytochrome c oxidase subunit 2 is distributed in clusters of ~20 and ~28 nm; whereas the voltage dependent anion channel 1 displays four size distributions of ~22, ~33, ~55 and ~83 nm.
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