Atomic-level insight into mRNA processing bodies by combining solid and solution-state NMR spectroscopy

Reinier Damman, Stefan Schütz, Yanzhang Luo, Markus Weingarth, Remco Sprangers () and Marc Baldus ()
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Reinier Damman: NMR Spectroscopy, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8
Stefan Schütz: University of Regensburg
Yanzhang Luo: NMR Spectroscopy, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8
Markus Weingarth: NMR Spectroscopy, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8
Remco Sprangers: University of Regensburg
Marc Baldus: NMR Spectroscopy, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8

Nature Communications, 2019, vol. 10, issue 1, 1-11

Abstract: Abstract Liquid–liquid phase separation is increasingly recognized as a process involved in cellular organization. Thus far, a detailed structural characterization of this intrinsically heterogeneous process has been challenging. Here we combine solid- and solution-state NMR spectroscopy to obtain atomic-level insights into the assembly and maturation of cytoplasmic processing bodies that contain mRNA as well as enzymes involved in mRNA degradation. In detail, we have studied the enhancer of decapping 3 (Edc3) protein that is a central hub for processing body formation in yeast. Our results reveal that Edc3 domains exhibit diverse levels of structural organization and dynamics after liquid–liquid phase separation. In addition, we find that interactions between the different Edc3 domains and between Edc3 and RNA in solution are largely preserved in the condensed protein state, allowing processing bodies to rapidly form and dissociate upon small alterations in the cellular environment.

Date: 2019
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DOI: 10.1038/s41467-019-12402-3

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