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Updated: Apr 1, 2026
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Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
Published on: September 17, 2017
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Super-Resolution solid-state NMR Spectroscopy
Olivia Gampp1, Riccardo Cadalbert1, Roland Riek2
1Institute of Molecular Physical Science, ETH Zürich, Vladimir-Prelog-Weg 2, Zürich, CH-8093, Switzerland.
Journal of Biomolecular NMR
|March 31, 2026
Summary
Super-resolution NMR enhances solid-state spectral resolution without specialized hardware. This dynamic number of scans (DNS) method improves sensitivity and peak detection for better structural insights.
Area of Science:
- Nuclear Magnetic Resonance (NMR) Spectroscopy
- Biophysical Chemistry
- Structural Biology
Background:
- Solid-state NMR spectroscopy faces challenges with low spectral resolution.
- Conventional methods like fast magic-angle spinning (MAS) and ¹H detection require expensive equipment.
- Improving resolution is crucial for detailed molecular structure determination.
Purpose of the Study:
- To implement and validate a super-resolution technique for solid-state NMR.
- To assess the impact of dynamic number of scans (DNS) sampling on spectral quality.
- To provide an accessible method for enhancing solid-state NMR spectral resolution.
Main Methods:
- Application of dynamic number of scans (DNS) sampling, a super-resolution technique.
- Utilizing 2D ¹³C-¹³C Distance-Restrained (DARR) experiments.
- Testing the method on the AP205 capsid protein.
Main Results:
- Achieved an effective doubling of spectral resolution, reducing peak widths by approximately 50% (from ~180 Hz to ~87 Hz).
- Demonstrated a 20% gain in sensitivity compared to post-acquisition apodization.
- Increased the number of detectable peaks by 309, with 20% more sequential and 25% more long-range contacts.
Conclusions:
- Super-resolution via DNS sampling is a simple and effective strategy to enhance solid-state NMR spectral quality.
- This method offers significant advantages in resolution, sensitivity, and peak detectability.
- The technique is broadly applicable across various MAS frequencies, making high-quality solid-state NMR more accessible.
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