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Effects of Anisotropic Molecular Rotational Diffusion on Nuclear Magnetic Relaxation in Liquids
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TLDR
In this paper, the equations for the relaxation time of a nuclear spin in a molecule undergoing diffusion reorientation have been extended to include fully anisotropic reorientations for a number of relaxation mechanisms.Abstract:
The equations for the relaxation time of a nuclear spin in a molecule undergoing diffusion reorientation have been extended to include fully anisotropic reorientation for a number of relaxation mechanisms. The full rotational diffusion tensor—both principal diffusion constants and orientation of the principal rotation axes—can be found by the measurement of the NMR relation times of an appropriate set of nuclei in the molecule.read more
Citations
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Backbone dynamics of calmodulin studied by 15N relaxation using inverse detected two-dimensional NMR spectroscopy: the central helix is flexible.
TL;DR: The backbone dynamics of Ca(2+)-saturated recombinant Drosophila calmodulin has been studied by 15N longitudinal and transverse relaxation experiments, combined with 15N(1H) NOE measurements, showing a high degree of mobility near the middle of the central helix and anisotropy observed in the motion of the two globular cal modulin domains is much smaller than expected.
Journal ArticleDOI
Time-dependent fluorescence depolarization and Brownian rotational diffusion coefficients of macromolecules
TL;DR: In this article, the authors derived relations between the time-dependent fluorescence polarization anistropy and the Brownian rotational diffusion coefficients of macromolecules using a distribution function formalism.
Journal ArticleDOI
Rotational brownian motion and fluorescence intensify fluctuations
Måns Ehrenberg,Rudolf Rigler +1 more
TL;DR: In this paper, a theory connecting rotational brownian motion with intensity fluctuations of the light emitted from fluorescent molecules excited by linearly polarized light is given, which does not depend on the close relationship between fluorescence lifetime and rotational relaxation times, which makes an enlarged time range available for fluorescence spectroscopy.
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Natural Abundance Carbon‐13 Partially Relaxed Fourier Transform Nuclear Magnetic Resonance Spectra of Complex Molecules
TL;DR: In this paper, the spin-lattice relaxation times (T1) of individual carbons in solutions of cholesteryl chloride, sucrose, and adenosine 5′-monophosphate (AMP) at 15.08 MHz and 42°C were determined.
Journal ArticleDOI
Dipolar relaxation and nuclear Overhauser effects in nonrigid molecules: The effect of fluctuating internuclear distances
TL;DR: In this article, a simple treatment of dipolar contribution to nuclear magnetic relaxation is developed for molecules in which conformational fluctuations modulate the relevant internuclear distances, and approximate results for cross-correlation spectral densities are obtained for complex spin systems, e.g., An1Mn2Xn3....
References
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Journal ArticleDOI
Relaxation Effects in Nuclear Magnetic Resonance Absorption
TL;DR: In this article, the authors studied the effect of the thermal motion of the magnetic nuclei upon the spin-spin interaction in a rigid lattice and the line width of the absorption line.