Single-Molecule FRET X

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Single Molecule Analysis

Part of the book series: Methods in Molecular Biology ((MIMB,volume 2694))

Abstract

Fluorescence resonance energy transfer (FRET) is a photophysical phenomenon that has been repurposed as a biophysical tool to measure nanometer distances. With FRET by DNA eXchange, or FRET X, many points of interest (POIs) in a single object can be probed, overcoming a major limitation of conventional single-molecule FRET. In FRET X, short fluorescently labeled DNA imager strands specifically and transiently bind their complementary docking strands on a target molecule, such that at most a single FRET pair is formed at each point in time and multiple POIs on a single molecule can be readily probed. Here, we describe the sample preparation, image acquisition, and data analysis for structural analysis of DNA nanostructures with FRET X.

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Declaration of Interests

C.J. and M.F. hold a patent on single-molecule FRET for protein characterization (patent number: WO2021049940).

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Correspondence to Chirlmin Joo .

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Filius, M., van Wee, R., Joo, C. (2024). Single-Molecule FRET X. In: Heller, I., Dulin, D., Peterman, E.J. (eds) Single Molecule Analysis . Methods in Molecular Biology, vol 2694. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-3377-9_10

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  • DOI: https://doi.org/10.1007/978-1-0716-3377-9_10

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  • Publisher Name: Humana, New York, NY

  • Print ISBN: 978-1-0716-3376-2

  • Online ISBN: 978-1-0716-3377-9

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