[Theory of Mossbauer effect in hydrated globular proteins]

The spectrum of Mössbauer absorption by the label incorporated into macromolecule is constructed. The dependence of the spectrum parameters on the hydration degree is found. The results are compared with experiments. The fluid flow inside the globule, excited by rotational vibrations of the globule surface is described by the linearized Debye-Brinkman equation. The local coefficients of rotational and translational diffusion of the globule fragments are found. The hydration coefficient is determined by the ratio of the effective inertia of the porous sphere with the fluid to the inertia of solid sphere.