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In this study, we have imaged plasma membrane molecules labeled with quantum dots in live cells using a conventional wide-field microscope with high spatial precision at sampling frequencies of 1.75 kHz. Many of the resulting single molecule trajectories are sufficiently long (up to several thousand steps) to allow for robust single trajectory analysis. This analysis indicates that a majority of the investigated molecules are transiently confined in nanoscopic compartments with a mean size of (100–150 nm)(2) for a mean duration of 50–100 ms.

Original publication

DOI

10.1021/nl303151f

Type

Journal article

Journal

Nano Lett

Publication Date

12/06/2013

Volume

13

Pages

2332 - 2337

Keywords

Cell Compartmentation, Cell Membrane, Quantum Dots