Abstract
We investigate the conformations of myosin V bound to ATP and to ADP via single molecule FRET measurements. The myosin V is labeled with FlAsH in the upper 50kDa domain, and the bound nucleotides are labeled with Rhodamine 101. We have carried out two types of single molecule FRET measurements on this complex: 1) we record the transit of single molecules diffusing through the focal region of a probe laser (473 nm); 2) we record the time trajectory of each molecule while it is encapsulated within an optically trapped femtoliter aqueous nanodroplet (hydrosome).
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