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Method to quantify local force distribution within biomolecular systems

May 24, 2018

By using optical tweezers coupled with fluorescence microscopy, Dr. King et al. (2018) studied the ability of cyanine intercalator dyes to quantify the molecular tension within biomolecular structures. They found that intercalators can be used in biomolecular systems in real-time to measure the tension locally and to determine how applied forces are partitioned. As an example, the authors demonstrated that stretched and entwined DNA structures can generate transient DNA-DNA interactions that mimic DNA bridges, by measuring the tension and local force distribution within the structures.

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Optical tweezers, Confocal microscopy, STED nanoscopy, Acoustic force spectroscopy for single-molecule biophysics. 

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Live, simultaneous and correlative visualization and manipulation of molecular interactions with sub-picoNewton force resolution and sub-nm position resolution.

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The first dedicated optical tweezers instrument specifically developed for high-resolution single-molecule force spectroscopy research.

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Acoustic Force Spectroscopy is a single-molecule, lab-on-a-chip technology in which acoustic waves are used to exert forces on thousands of biomolecules.

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