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Structural Analysis of RNA by Small-Angle X-ray Scattering

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RNA Spectroscopy

Abstract

Over the past two decades small-angle X-ray scattering (SAXS) has become a popular method to characterize solutions of biomolecules including ribonucleic acid (RNA). In an integrative structural approach, SAXS is complementary to crystallography, NMR, and electron microscopy and provides information about RNA architecture and dynamics. This chapter highlights the practical advantages of combining size-exclusion chromatography and SAXS at synchrotron facilities. It is illustrated by practical case studies of samples ranging from single hairpins and tRNA to a large IRES. The emphasis is also put on sample preparation which is a critical step of SAXS analysis and on optimized protocols for in vitro RNA synthesis ensuring the production of mg amount of pure and homogeneous molecules.

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Acknowledgments

The authors thank the team of the SWING beamline (SOLEIL synchrotron, Saint-Aubin, France), in particular Pierre Roblin and Javier Pérez, for beam time provision and assistance during data collection and processing, as well as José Teixeira (LLB, CEA Saclay, France) for his critical reading of the manuscript and fruitful discussion. The work described in this chapter was supported by the French Centre National de la Recherche Scientifique, the University of Strasbourg, the LabEx consortium “NetRNA” (ANR-10-LABX-0036_NETRNA).

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Correspondence to Claude Sauter .

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Théobald-Dietrich, A. et al. (2020). Structural Analysis of RNA by Small-Angle X-ray Scattering. In: Arluison, V., Wien, F. (eds) RNA Spectroscopy. Methods in Molecular Biology, vol 2113. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-0278-2_14

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  • DOI: https://doi.org/10.1007/978-1-0716-0278-2_14

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