Nanoscale imaging of molecular positions and anisotropies.

Nanoscale imaging of molecular positions and anisotropies.
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DOI:
10.1038/nmeth.1271
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发表时间:
2008-12
期刊:
影响因子:
48
通讯作者:
Hess, Samuel T.
Hess, Samuel T.
中科院分区:
生物学1区
文献类型:
--
作者:
Gould, Travis J.;Gunewardene, Mudalige S.;Gudheti, Manasa V.;Verkhusha, Vladislav V.;Yin, Shu-Rong;Gosse, Julie A.;Hess, Samuel T.

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了解生物结构中分子的方向对于理解细胞功能的机制至关重要。我们提出了一种方法,同时图像的位置和荧光各向异性的大量单分子与纳米横向分辨率的样品。基于荧光光活化定位显微镜(FPAL M)的简单修改,偏振(P)-FPAL M不损害速度或灵敏度。我们显示了表达Dendra 2-肌动蛋白或Dendra 2-血凝素的小鼠成纤维细胞的结果。
Knowledge of the orientation of molecules within biological structures is crucial to understanding the mechanisms of cell function. We present a method to image simultaneously the positions and fluorescence anisotropies of large numbers of single molecules with nanometer lateral resolution within a sample. Based on a simple modification of fluorescence photoactivation localization microscopy (FPALM), polarization (P)-FPALM does not compromise speed or sensitivity. We show results for mouse fibroblasts expressing Dendra2-actin or Dendra2-hemagglutinin.
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