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Fast Magic-Angle Spinning

Mingzhang Wang1,2, Manman Lu1,2,3, Matthew P Fritz1,2

  • 1Department of Chemistry and Biochemistry, University of Delaware, Brown Laboratories, Newark, DE, 19716, USA.

Angewandte Chemie (International Ed. in English)
|September 19, 2018
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Summary
This summary is machine-generated.

Fast magic angle spinning (MAS) 19F NMR spectroscopy reveals distinct local environments of tryptophan residues in HIV-1 capsid protein assemblies. This technique enables structural analysis of large biological systems by determining interatomic distances.

Keywords:
19F NMR spectroscopycapsidsmagic angle spinningprotein assembliesprotein structures

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Area of Science:

  • Biochemistry
  • Chemical Biology
  • Materials Science

Background:

  • 19F NMR spectroscopy is a versatile tool with expanding applications.
  • Understanding the structure of large biological assemblies is crucial in various scientific fields.

Purpose of the Study:

  • To explore the utility of fast magic angle spinning (MAS) 19F solid-state NMR spectroscopy.
  • To analyze the structure of HIV-1 capsid protein assemblies using fluorine-substituted tryptophan residues.

Main Methods:

  • Utilized fast MAS 19F solid-state NMR spectroscopy.
  • Employed spin-diffusion and radio-frequency-driven-recoupling experiments.
  • Achieved MAS frequencies of 35 kHz and 40-60 kHz.

Main Results:

  • Distinct 19F chemical shifts were observed for five tryptophan residues, indicating varied local environments.
  • Fast MAS frequencies (40-60 kHz) were critical for establishing 19F-19F correlations.
  • Interatomic distances of approximately 20 Å were determined.

Conclusions:

  • Fast MAS 19F NMR spectroscopy is effective for structural analysis of large biological assemblies.
  • The technique provides insights into the local environments of reporter molecules within protein structures.