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  • Title: Combining optical tweezers, single-molecule fluorescence microscopy, and microfluidics for studies of DNA-protein interactions.
    Author: Gross P, Farge G, Peterman EJ, Wuite GJ.
    Journal: Methods Enzymol; 2010; 475():427-53. PubMed ID: 20627167.
    Abstract:
    The technically challenging field of single-molecule biophysics has established itself in the last decade by granting access to detailed information about the fate of individual biomolecules, unattainable in traditional biochemical assays. The appeal of single-molecule methods lies in the directness of the information obtained from individual biomolecules. Technological improvements in single-molecule methods have made it possible to combine optical tweezers, fluorescence microscopy, and microfluidic flow systems. Such a combination of techniques has opened new possibilities to study complex biochemical reactions on the single-molecule level. In this chapter, we provide general considerations for the development of a combined optical trapping, fluorescence microscopy, and microfluidics instrument, along with methods to solve technical issues that are critical for designing successful experiments. Finally, we present several experiments to illustrate the power of this combination of techniques.
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