DYNAMICS OF WATER ON PROTEIN SURFACES

In this paper we present a study of the dynamical behavior of the wate r of hydration on myoglobin, performed by means of incoherent quasi-el astic neutron scattering. For the hydration level investigated: from h =0.25 to h=1.1, we were able to extract the Q dependence of the HWHM a nd of the EISF for the water fraction present in the system. The obtai ned figures suggest that water is organized in pools, of about 10 A si ze, with reduced mobility. A comparison with the behavior of bulk wate r is also presented.