Pressure effects on collective density fluctuations in water and protein solutions.
Proc Natl Acad Sci U S A
; 114(43): 11410-11415, 2017 10 24.
Article
em En
| MEDLINE
| ID: mdl-29073065
ABSTRACT
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.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Pressão
/
Água
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Proteínas
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Simulação de Dinâmica Molecular
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article