Publication date: Available online 12 December 2015 Source:Journal of Magnetic Resonance
Author(s): Bibhuti B. Das, Stanley J. Opella
We describe high resolution MAS solid-state NMR experiments that utilize 1H detection with 60 kHz magic angle spinning; simultaneous cross-polarization from 1H to 15N and 13C nuclei; bidirectional cross-polarization between 13C and 15N nuclei; detection of both amide nitrogen and aliphatic carbon 1H; and measurement of both 13C and 15N chemical shifts through multi-dimensional correlation experiments. Three-dimensional experiments correlate amide 1H and alpha 1H selectively with 13C or 15N nuclei in a polypeptide chain. Two separate three-dimensional spectra correlating 1H?/13C?/1HN and 1HN/15N/1H? are recorded simultaneously in a single experiment, demonstrating that a two-fold savings in experimental time is potentially achievable. Spectral editing using bidirectional coherence transfer pathways enables simultaneous magnetization transfers between 15N, 13C?(i) and 13C’(i-1), facilitating intra- and inter- residue correlations for sequential resonance assignment. Non-uniform sampling is integrated into the experiments, further reducing the length of experimental time. Graphical abstract
[NMR paper] Optimization of cross-polarization at low radiofrequency fields for sensitivity enhancement in solid-state NMR of membrane proteins reconstituted in magnetically aligned bicelles.
Optimization of cross-polarization at low radiofrequency fields for sensitivity enhancement in solid-state NMR of membrane proteins reconstituted in magnetically aligned bicelles.
Optimization of cross-polarization at low radiofrequency fields for sensitivity enhancement in solid-state NMR of membrane proteins reconstituted in magnetically aligned bicelles.
J Magn Reson. 2015 Apr 28;256:14-22
Authors: Koroloff SN, Nevzorov AA
Abstract
Solid-state NMR (ssNMR) of oriented membrane proteins (MPs) is capable of providing...
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[NMR paper] Optimization of cross-polarization at low radiofrequency fields for sensitivity enhancement in solid-state NMR of membrane proteins reconstituted in magnetically aligned bicelles
Optimization of cross-polarization at low radiofrequency fields for sensitivity enhancement in solid-state NMR of membrane proteins reconstituted in magnetically aligned bicelles
Publication date: Available online 28 April 2015
Source:Journal of Magnetic Resonance</br>
Author(s): Sophie N. Koroloff , Alexander A. Nevzorov</br>
Solid-state NMR (ssNMR) of oriented membrane proteins (MPs) is capable of providing structural and dynamic information at nearly physiological conditions. However, NMR experiments performed on oriented membrane proteins generally suffer from...
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[NMR paper] Asymmetric simultaneous phase-inversion cross-polarization in solid-state MAS NMR: Relaxing selective polarization transfer condition between two dilute spins.
Asymmetric simultaneous phase-inversion cross-polarization in solid-state MAS NMR: Relaxing selective polarization transfer condition between two dilute spins.
Related Articles Asymmetric simultaneous phase-inversion cross-polarization in solid-state MAS NMR: Relaxing selective polarization transfer condition between two dilute spins.
J Magn Reson. 2014 Mar 16;242C:214-219
Authors: Zhang Z, Fu R, Li J, Yang J
Abstract
Double cross polarization (DCP) has been widely used for heteronuclear polarization transfer between (13)C...
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04-03-2014 12:59 PM
Asymmetric simultaneous phase-inversion cross-polarization in solid-state MAS NMR: relaxing selective polarization transfer condition between two dilute spins
Asymmetric simultaneous phase-inversion cross-polarization in solid-state MAS NMR: relaxing selective polarization transfer condition between two dilute spins
Publication date: Available online 16 March 2014
Source:Journal of Magnetic Resonance</br>
Author(s): Zhengfeng Zhang , Riqiang Fu , Jianping Li , Jun Yang</br>
Double cross polarization (DCP) has been widely used for heteronuclear polarization transfer between 13C and 15N in solid-state magic-angle spinning (MAS) NMR. However, DCP is such sensitive to experimental settings that small variations or...
Dual-band Selective Double Cross Polarization for Heteronuclear Polarization Transfer between Dilute Spins in Solid-State MAS NMR
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Publication year: 2012
Source:Journal of Magnetic Resonance</br>
Zhengfeng Zhang, Yimin Miao, Xiaoli Liu, Jun Yang, Conggang Li, Feng Deng, Riqiang Fu</br>
A sinusoidal modulation scheme is described for selective heteronuclear polarization transfer between two dilute spins in double cross polarization magic-angle-spinning nuclear magnetic resonance spectroscopy. During the second N->C cross polarization, the 13C RF amplitude is...
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03-09-2012 09:16 AM
Dual-band Selective Double Cross Polarization for Heteronuclear Polarization Transfer between Dilute Spins in Solid-State MAS NMR
Dual-band Selective Double Cross Polarization for Heteronuclear Polarization Transfer between Dilute Spins in Solid-State MAS NMR
Publication year: 2012
Source: Journal of Magnetic Resonance, Available online 5 March 2012</br>
Zhengfeng*Zhang, Yimin*Miao, Xiaoli*Liu, Jun*Yang, Conggang*Li, ...</br>
A sinusoidal modulation scheme is described for selective heteronuclear polarization transfer between two dilute spins in double cross polarization magic-angle-spinning nuclear magnetic resonance spectroscopy. During the second N->C cross polarization, theC RF amplitude is modulated...
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03-06-2012 06:04 AM
Rapid Solid-State NMR of Deuterated Proteins by Interleaved Cross-Polarization fromH andH Nuclei
Rapid Solid-State NMR of Deuterated Proteins by Interleaved Cross-Polarization fromH andH Nuclei
Publication year: 2011
Source: Journal of Magnetic Resonance, Available online 9 November 2011</br>
Morten*Bjerring, Berit*Paaske, Hartmut*Oschkinat, Umit*Akbey, Niels Chr.*Nielsen</br>
We present a novel sampling strategy, interleaving acquisition of multiple NMR spectra by exploiting initial polarization subsequently fromH andH spins, taking advantage of their differentT1relaxation times. DifferentH- andH-polarization based spectra are in this way simultaneously recorded improving either...