Publication year: 2010 Source: Journal of Magnetic Resonance, In Press, Accepted Manuscript, Available online 10 November 2010
Galina, Diakova , Yanina, Goddard , Jean-Pierre, Korb , Robert G., Bryant
The paramagnetic contributions to water proton spin-lattice relaxation rate constants in protein systems spin-labeled with nitroxide radicals were re-examined. As noted by others, the strength of the dipolar coupling between water protons and the protein-bound nitroxide radical often appears to be larger than physically reasonable when the relaxation is assumed to be controlled by 3-dimensional diffusive processes in the vicinity of the spin label. We examine the effects of the surface in biasing the diffusive exploration of the radical region and derive a relaxation model that incorporates 2-dimensional dynamics at the interfacial layer. However, we find that the local 2-dimensional...
Water proton spin saturation affects measured protein backboneN spin relaxation rates
Water proton spin saturation affects measured protein backboneN spin relaxation rates
Publication year: 2011
Source: Journal of Magnetic Resonance, Available online 1 October 2011</br>
Kang*Chen, Nico*Tjandra</br>
Protein backboneN NMR spin relaxation rates are useful in characterizing the protein dynamics and structures. To observe the protein nuclear-spin resonances a pulse sequence has to include a water suppression scheme. There are two commonly employed methods, saturating or dephasing the water spins with pulse field gradients and keeping them unperturbed with flip-back pulses....
nmrlearner
Journal club
0
10-02-2011 08:25 AM
Structure, Dynamics, and Kinetics of Weak Protein-Protein Complexes from NMR Spin Relaxation Measurements of Titrated Solutions.
Structure, Dynamics, and Kinetics of Weak Protein-Protein Complexes from NMR Spin Relaxation Measurements of Titrated Solutions.
Structure, Dynamics, and Kinetics of Weak Protein-Protein Complexes from NMR Spin Relaxation Measurements of Titrated Solutions.
Angew Chem Int Ed Engl. 2011 Mar 18;
Authors: Salmon L, Ortega Roldan JL, Lescop E, Licinio A, van Nuland N, Jensen MR, Blackledge M
nmrlearner
Journal club
0
03-23-2011 05:41 PM
[NMR paper] NMR relaxation and water self-diffusion studies in whey protein solutions and gels.
NMR relaxation and water self-diffusion studies in whey protein solutions and gels.
Related Articles NMR relaxation and water self-diffusion studies in whey protein solutions and gels.
J Agric Food Chem. 2005 Aug 24;53(17):6784-90
Authors: Colsenet R, Mariette F, Cambert M
The changes in water proton transverse relaxation behavior induced by aggregation of whey proteins are explained in terms of the simple molecular processes of diffusion and chemical exchange. The water self-diffusion coefficient was measured in whey protein solutions and...
nmrlearner
Journal club
0
12-01-2010 06:56 PM
[NMR paper] An NMR study of the origin of dioxygen-induced spin-lattice relaxation enhancement an
An NMR study of the origin of dioxygen-induced spin-lattice relaxation enhancement and chemical shift perturbation.
Related Articles An NMR study of the origin of dioxygen-induced spin-lattice relaxation enhancement and chemical shift perturbation.
J Magn Reson. 2004 Dec;171(2):225-32
Authors: Prosser RS, Luchette PA
Due to its depth-dependent solubility, oxygen exerts paramagnetic effects which become progressively greater toward the hydrophobic interior of micelles, and lipid bilayer membranes. This paramagnetic gradient, which is manifested...
nmrlearner
Journal club
0
11-24-2010 10:03 PM
[NMR paper] Relaxation-matrix formalism for rotating-frame spin-lattice proton NMR relaxation and
Relaxation-matrix formalism for rotating-frame spin-lattice proton NMR relaxation and magnetization transfer in the presence of an off-resonance irradiation field.
Related Articles Relaxation-matrix formalism for rotating-frame spin-lattice proton NMR relaxation and magnetization transfer in the presence of an off-resonance irradiation field.
J Magn Reson B. 1994 May;104(1):11-25
Authors: Kuwata K, Brooks D, Yang H, Schleich T
The derivation of a generalized relaxation matrix equation for the off-resonance rotating-frame spin-lattice...
nmrlearner
Journal club
0
08-22-2010 03:33 AM
[NMR paper] Relaxation-matrix formalism for rotating-frame spin-lattice proton NMR relaxation and
Relaxation-matrix formalism for rotating-frame spin-lattice proton NMR relaxation and magnetization transfer in the presence of an off-resonance irradiation field.
Related Articles Relaxation-matrix formalism for rotating-frame spin-lattice proton NMR relaxation and magnetization transfer in the presence of an off-resonance irradiation field.
J Magn Reson B. 1994 May;104(1):11-25
Authors: Kuwata K, Brooks D, Yang H, Schleich T
The derivation of a generalized relaxation matrix equation for the off-resonance rotating-frame spin-lattice...
nmrlearner
Journal club
0
08-22-2010 03:33 AM
[NMR paper] A 31P-NMR spin-lattice relaxation and 31P[1H] nuclear Overhauser effect study of soni
A 31P-NMR spin-lattice relaxation and 31P nuclear Overhauser effect study of sonicated small unilamellar phosphatidylcholine vesicles.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--linkinghub.elsevier.com-ihub-images-PubMedLink.gif Related Articles A 31P-NMR spin-lattice relaxation and 31P nuclear Overhauser effect study of sonicated small unilamellar phosphatidylcholine vesicles.
Biochim Biophys Acta. 1992 Feb 17;1104(1):137-46
Authors: Tauskela JS, Thompson M
The motional properties of the inner and outer monolayer headgroups of...
Water-Proton-Spin-Lattice-Relaxation Dispersion of Paramagnetic Protein Solutions
Linear Mode
