نتایج جستجو برای: nuclear magnetic resonance spectroscopy

تعداد نتایج: 750760  

Journal: :Acta crystallographica. Section D, Biological crystallography 2006
E Ab A R Atkinson L Banci I Bertini S Ciofi-Baffoni K Brunner T Diercks V Dötsch F Engelke G E Folkers C Griesinger W Gronwald U Günther M Habeck R N de Jong H R Kalbitzer B Kieffer B R Leeflang S Loss C Luchinat T Marquardsen D Moskau K P Neidig M Nilges M Piccioli R Pierattelli W Rieping T Schippmann H Schwalbe G Travé J Trenner J Wöhnert M Zweckstetter R Kaptein

This paper describes the developments, role and contributions of the NMR spectroscopy groups in the Structural Proteomics In Europe (SPINE) consortium. Focusing on the development of high-throughput (HTP) pipelines for NMR structure determinations of proteins, all aspects from sample preparation, data acquisition, data processing, data analysis to structure determination have been improved with...

2014
Nirmal Jayabalan Souvik Basak

Nuclear magnetic resonance spectroscopy is increasingly used in protein research. It can be used for protein structure determination in solution, close to the physiological environment. It can determine also the protein dynamics which is very important to understand biological phenomena. This article summarizes about the techniques and methods in NMR routinely used in protein research.

2012
Martin Tollinger Astrid C. Sivertsen Beat H. Meier Matthias Ernst Paul Schanda

We demonstrate that conformational exchange processes in proteins on microsecond-to-millisecond time scales can be detected and quantified by solid-state NMR spectroscopy. We show two independent approaches that measure the effect of conformational exchange on transverse relaxation parameters, namely Carr-Purcell-Meiboom-Gill relaxation-dispersion experiments and measurement of differential mul...

Journal: :Journal of the American Chemical Society 2004
Marina Carravetta Yasujiro Murata Michihisa Murata Ivo Heinmaa Raivo Stern Ana Tontcheva Ago Samoson Yves Rubin Koichi Komatsu Malcolm H Levitt

Solid-state 1H experiments were performed an open-cage fullerene hosting molecular hydrogen. The anisotropy of the molecular hydrogen rotation was studied by double-quantum magic-angle-spinning NMR. The time scale of the molecular hydrogen rotation was estimated by spin-lattice relaxation measurements as a function of temperature.

Journal: :Journal of magnetic resonance 2005
Jay H Baltisberger Sabine Hediger Lyndon Emsley

Stray field imaging has been extensively utilized in the last 10 years to perform very high resolution imaging of samples in a single dimension using the massive field gradient present in the fringe of a superconducting magnet. By spinning the sample around the magic-angle, the stray field gradient is successively reoriented along three orthogonal directions in the sample reference frame, allow...

2014
Simon Glanzer Klaus Zangger

For the analysis of compound mixtures by NMR spectroscopy, it is important to assign the different peaks to the individual constituents. Diffusion-ordered spectroscopy (DOSY) is often used for the separation of signals based on their self-diffusion coefficient. However, this method often fails in the case of signal overlap, which is a particular problem for (1)H-detected DOSY spectra. Herein, a...

Journal: :The Journal of chemical physics 2004
Jürgen Gräfenstein Dieter Cremer

For the first time, the nuclear magnetic resonance (NMR) spin-spin coupling mechanism is decomposed into one-electron and electron-electron interaction contributions to demonstrate that spin-information transport between different orbitals is not exclusively an electron-exchange phenomenon. This is done using coupled perturbed density-functional theory in conjunction with the recently developed...

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