[20] Protein rotational correlation times by carbon-13 rotating-frame spin-lattice relaxation in presence of off-resonance radiofrequency field

Efficiency of paramagnetic relaxation enhancement in off-resonance rotating frame

“…The 90°pulse reads out the residual z-magnetization. When spin arrives at equilibrium with the rotating frame, the residual z-magnetization is defined as follows [12]:…”

NMR Relaxation in Multipolar AX Systems under Spin Locking Conditions

“…This technique allows one to sample spectral densities at frequencies of the order of RF field strength, thus making slow processes effective. Several techniques allowing for sampling spectral densities at intermediate frequencies, utilizing the radiofrequency field positioned off-resonance (rather than at resonance frequency for one of the nuclear species), have also been proposed (22)(23)(24)(25) and found to be important.…”

Assesment of protein reorientational diffusion in solution by 13C off‐resonance rotating frame spin–lattice relaxation: Effect of polydispersity

“…Using the fitted values of ro,eff from simulated dispersion curves representing mixtures of known polydispersity, the value of a in the expression defining the average correlation time was varied until the sum of the squares of [ T~~,~~ -was minimized, where T~~,~~,~ is defined by Eq. (2). This is shown in Fig.…”

“…E(ql,eff ~ 7 ) 2 vs the parameter a in Eq. (2) (see text) "For the calculation of 7) from molecular weight, the parameters listed in the caption of Fig. 1 "Obtained by nonlinear regression of simulated dispersion curves for assumed polydisperse 'Calculated using Eq.…”