Local mobility of 15N labeled biomolecules characterized through cross-correlation rates: applications to paramagnetic proteins
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We performed variable temperature (0–100°C), concentration and frequency (9.425, 75, 150 and 225 GHz) continuous wave electron paramagnetic resonance (EPR) measurements on three different Gd(III) compounds: [Gd(H2O)8]3+, [Gd(DOTA)(H2O)]− (DOTA: 1,4,7,10-te ...
The theory of single-transition cross-polarization in NMR is presented and verified by exptl. evidence. In comparison to conventional cross-polarization a qual. change in the mechanism is obsd. Under the influence of matched radiofrequency fields with ampl ...
n a previous paper, we reported the first longitudinally detected electron paramagnetic resonance (LODEPR) measurements of fast T1e values in aqueous solutions of two Gd3+ chelates, and we included predicted values for these relaxation times, based on zero ...
A new expression for the spectral d. function of cross-correlated dipole-dipole interference is proposed. It allows one to assess to what extent anisotropic rotational diffusion results in complications in the interpretation of cross-correlation rates. The ...
A method is proposed to measure the radiation damping rate const. based on the anal. of the nonexponential recovery of the magnetization after inversion. It is applicable when the recovery is dominated by radiation damping rather than by relaxation process ...
A review is given of the math. foundations of av. Liouvillian theory and examples are provided of av. Liouvillian expressions derived for sequences in NMR which possess temporal symmetry or antisymmetry. The utility of this approach is demonstrated in the ...
In systems with dipolar relaxation in isotropic phase, it is possible to measure the extent of cross correlation of the fluctuations of two selected dipole-dipole interactions A-M and A-X by selectively exciting and spin-locking the transverse magnetizatio ...
A group spin approach is used to describe the interconversion of magnetization modes in systems of 3 equiv. spins 1/2. The most prominent effect of cross correlation of the fluctuations of chem. shift anisotropy and dipolar interactions is the transformati ...
Multiple experiments (17O NMR, 1H NMR, and EPR) have been performed in the past to understand the microscopic parameters that control the magnetic relaxation rate enhancement induced by paramagnetic molecules on neighboring water protons, the so-called rel ...
A comprehensive description is presented of the effects on two-spin coherences (i.e., superpositions of zero- and double-quantum coherences) of cross-correlation between the fluctuations of two different relaxation mechanisms in NMR (NMR). Dipole-dipole (D ...