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Updated: Jun 17, 2026

Ubiquitin Chain Analysis by Parallel Reaction Monitoring
Published on: June 17, 2020
Probing molecular motion by double-quantum (13C,13C) solid-state NMR spectroscopy: application to ubiquitin
Robert Schneider1, Karsten Seidel, Manuel Etzkorn
1Department for NMR-based Structural Biology, Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany.
This study uses advanced solid-state NMR spectroscopy to reveal molecular dynamics in proteins. The findings show how sample preparation affects protein structure and mobility, crucial for understanding biological function.
Area of Science:
- Biophysics
- Structural Biology
- Nuclear Magnetic Resonance (NMR) Spectroscopy
Background:
- Solid-state NMR is a powerful technique for studying molecular dynamics in complex systems.
- Understanding protein dynamics is essential for elucidating biological function and disease mechanisms.
Purpose of the Study:
- To demonstrate the utility of two-dimensional (13C,13C) double-quantum spectroscopy for detecting molecular dynamics.
- To investigate the impact of sample preparation on the dynamics and conformation of microcrystalline ubiquitin.
Main Methods:
- Utilized two-dimensional (13C,13C) double-quantum spectroscopy.
- Applied solid-state NMR experiments to tyrosine-ethylester (TEE) and microcrystalline ubiquitin.
- Performed solid-state NMR-based structure calculations.
Main Results:
- Observed molecular dynamics on millisecond or faster timescales in microcrystalline ubiquitin.
- Identified preparation-dependent differences in local mobility and conformational variability of ubiquitin loop regions.
- Correlated NMR spectral parameter changes with variations in ubiquitin dynamics and conformation.
Conclusions:
- Two-dimensional (13C,13C) double-quantum spectroscopy effectively detects molecular dynamics.
- Sample preparation significantly influences the dynamics and conformation of microcrystalline ubiquitin.
- Molecular mobility plays a key role in the properties of microcrystalline ubiquitin.
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