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Russo, Daniela; Laloni, Alessio; Filabozzi, Alessandra; Heyden, Matthias
Proceedings of the National Academy of Sciences - PNAS, 10/2017, Letnik: 114, Številka: 43Journal Article
Neutron Brillouin scattering and molecular dynamics simulations have been used to investigate protein hydration water density fluctuations as a function of pressure. Our results show significant differences between the pressure and density dependence of collective dynamics in bulk water and in concentrated protein solutions. Pressure-induced changes in the tetrahedral order of the water HB network have direct consequences for the high-frequency sound velocity and damping coefficients, which we find to be a sensitive probe for changes in the HB network structure as well as the wetting of biomolecular surfaces.
