Analysis of perturbed angular correlation spectra of metal ions bound to proteins with rotational correlation times in the intermediate region

摘要: The formulation by Dattagupta of the strong-collision model, describing effect on perturbation function,G2(t) isotropic tumbling an electric field gradient, is generalized to gradients with no axial symmetry. function strong collisions compared rotational diffusion in adiabatic limit. comparison carried out for decays intermediate state spin 5/2 and non-axially symmetric gradients. It shows that model can be used interpretation PAC spectra molecules correlation times between fast relaxation limits. strongcollision then determine cadmium substituted copper, zinc superoxide dismutase at 3°C 25°C from111mCd TDPAC spectra. For these analyses, incorporated into a conventional least-squares fitting routine.