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  Pressure effects on collective density fluctuations in water and protein solutions

Russo, D., Laloni, A., Filabozzi, A., & Heyden, M. (2017). Pressure effects on collective density fluctuations in water and protein solutions. Proceedings of the National Academy of Sciences of the United States of America, 114(43), 11410-11415. doi:10.1073/pnas.1705279114.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0000-31C8-7 Version Permalink: https://hdl.handle.net/21.11116/0000-0000-31C9-6
Genre: Journal Article

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PNAS-2017-Russo-1705279114.pdf (Supplementary material), 2MB
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 Creators:
Russo, Daniela1, 2, Author
Laloni, Alessio1, Author
Filabozzi, Alessandra3, Author
Heyden, Matthias4, Author           
Affiliations:
1Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche, Institut Laue Langevin, 38042 Grenoble, France, ou_persistent22              
2Institut Lumière Matière, Université de Lyon 1, 69622 Lyon, France, ou_persistent22              
3Dipartimento di Fisica, Università di Roma, Tor Vergata, I-00133 Rome, Italy, ou_persistent22              
4Research Group Heyden, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1950292              

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Free keywords: high pressure; hydration water; collective THz modes; molecular dynamics; neutron scattering
 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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Language(s): eng - English
 Dates: 2017-03-302017-09-082017-10-092017-10-24
 Publication Status: Issued
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1073/pnas.1705279114
 Degree: -

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Title: Proceedings of the National Academy of Sciences of the United States of America
  Other : Proceedings of the National Academy of Sciences of the USA
  Other : Proc Natl Acad Sci U S A
  Other : Proc Natl Acad Sci USA
  Abbreviation : PNAS
Source Genre: Journal
 Creator(s):
Gruner, Sol M.1, Editor
Affiliations:
1 Cornell University, Ithaca, NY, ou_persistent22            
Publ. Info: Washington, D.C. : National Academy of Sciences
Pages: - Volume / Issue: 114 (43) Sequence Number: - Start / End Page: 11410 - 11415 Identifier: ISSN: 0027-8424
CoNE: https://pure.mpg.de/cone/journals/resource/954925427230