Vibrational Density of States of Hydration Water at Biomolecular Sites: Hydrophobicity Promotes Low Density Amorphous Ice Behavior (Articolo in rivista)

Type
Label
  • Vibrational Density of States of Hydration Water at Biomolecular Sites: Hydrophobicity Promotes Low Density Amorphous Ice Behavior (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/ja109610f (literal)
Alternative label
  • Daniela Russo *+, José Teixeira ?, Larry Kneller §, John R. D. Copley §, Jacques Ollivier , Stefania Perticaroli #, Eric Pellegrini , and Miguel Angel Gonzalez (2011)
    Vibrational Density of States of Hydration Water at Biomolecular Sites: Hydrophobicity Promotes Low Density Amorphous Ice Behavior
    in Journal of the American Chemical Society (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Daniela Russo *+, José Teixeira ?, Larry Kneller §, John R. D. Copley §, Jacques Ollivier , Stefania Perticaroli #, Eric Pellegrini , and Miguel Angel Gonzalez (literal)
Pagina inizio
  • 4882 (literal)
Pagina fine
  • 4888 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 133 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 13 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • + CNR-IOM c/o Institut Laue Langevin, 6 rue J. Horowitz BP156, F-38042 Grenoble, France ? Laboratoire Léon Brillouin (CEA/CNRS), CEA Saclay, 91191 Gif-sur Yvette Cedex, France § National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States Institut Laue Langevin, 6 rue J. Horowitz BP156, F-38042 Grenoble, France # Dipartimento di Chimica, Università degli Studi di Perugia, Sezione di Chimica Fisica, via Elce di sotto 8, I-06123 Perugia, Italia (literal)
Titolo
  • Vibrational Density of States of Hydration Water at Biomolecular Sites: Hydrophobicity Promotes Low Density Amorphous Ice Behavior (literal)
Abstract
  • Abstract: Inelastic neutron scattering experiments and molecular dynamics simulations have been used to investigate the low frequency modes, in the region between 0 and 100 meV, of hydration water in selected hydrophilic and hydrophobic biomolecules. The results show changes in the plasticity of the hydrogen-bond network of hydration water molecules depending on the biomolecular site. At 200 K, the measured low frequency density of states of hydration water molecules of hydrophilic peptides is remarkably similar to that of high density amorphous ice, whereas, for hydrophobic biomolecules, it is comparable to that of low density amorphous ice behavior. In both hydrophilic and hydrophobic biomolecules, the high frequency modes show a blue shift of the libration mode as compared to the room temperature data. These results can be related to the density of water molecules around the biological interface, suggesting that the apparent local density of water is larger in a hydrophilic environment (literal)
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