Abstract
Correlative imaging by fluorescence and atomic force microscopy provides a versatile tool to extract orthogonal information on structurally heterogeneous biomolecular assemblies. In this chapter, we describe an integrated setup for correlative fluorescence and force microscopy. We present factors influencing data quality, as well as step-by-step protocols for sample preparation, data acquisition, and data processing that yield nanoscale topographic resolution, high image registration accuracy, and single-fluorophore sensitivity. We demonstrate the capabilities of the approach through simultaneous characterization of mesoscale geometry and composition in a multipart nucleoprotein complex.
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Acknowledgments
We thank Dr. Wolfgang Wende for kindly providing the EcoRV (C21S/K58C) expression plasmid. We acknowledge funding from KU Leuven through the IDO program for financial support; WF, SR, and WV like to thank Fonds Wetenschappelijk Onderzoek (FWO) for personal fellowships.
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De Keersmaecker, H. et al. (2018). Correlative Atomic Force and Single-Molecule Fluorescence Microscopy of Nucleoprotein Complexes. In: Lyubchenko, Y. (eds) Nanoscale Imaging. Methods in Molecular Biology, vol 1814. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-8591-3_20
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DOI: https://doi.org/10.1007/978-1-4939-8591-3_20
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