J 2019

Protein Dynamics from Accurate Low-Field Site-Specific Longitudinal and Transverse Nuclear Spin Relaxation

KADEŘÁVEK, Pavel, N. BOLIK-COULON, S.F. COUSIN, T. MARQUARDSEN, J.M. TYBURN et. al.

Basic information

Original name

Protein Dynamics from Accurate Low-Field Site-Specific Longitudinal and Transverse Nuclear Spin Relaxation

Authors

KADEŘÁVEK, Pavel (203 Czech Republic, guarantor, belonging to the institution), N. BOLIK-COULON, S.F. COUSIN, T. MARQUARDSEN, J.M. TYBURN, J.N. DUMEZ and F. FERRAGE

Edition

Journal of Physical Chemistry Letters, Washington, American Chemical Society, 2019, 1948-7185

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10403 Physical chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 6.710

RIV identification code

RIV/00216224:14740/19:00113242

Organization unit

Central European Institute of Technology

UT WoS

000489189500037

Keywords in English

C-13 NMR-SPECTROSCOPY; SIDE-CHAIN DYNAMICS; BACKBONE DYNAMICS; MAGNETIC-RELAXATION; CYCLING DEVICE; LIQUIDS; PROTON; ENHANCEMENT; RELAXOMETRY; COMPLEXES

Tags

Tags

International impact, Reviewed
Změněno: 30/10/2024 14:09, Ing. Martina Blahová

Abstract

V originále

Nuclear magnetic relaxation provides invaluable quantitative site specific information on the dynamics of complex systems. Determining dynamics on nanosecond time scales requires relaxation measurements at low magnetic fields incompatible with high-resolution NMR. Here, we use a two-field NMR spectrometer to measure carbon-13 transverse and longitudinal relaxation rates at a field as low as 0.33 T (proton Larmor frequency 14 MHz) in specifically labeled side chains of the protein ubiquitin. The use of radiofrequency pulses enhances the accuracy of measurements as compared to high-resolution relaxometry approaches, where the sample is moved in the stray field of the superconducting magnet. Importantly, we demonstrate that accurate measurements at a single low magnetic field provide enough information to characterize complex motions on low nanosecond time scales, which opens a new window for the determination of site-specific nanosecond motions in complex systems such as proteins.

Links

90043, large research infrastructures
Name: CIISB