Dielectric modulation of biological water

Florin Despa, Ariel Fernández, R. Stephen Berry

Research output: Contribution to journalArticle

90 Scopus citations

Abstract

A model which shows the librational dynamics undergone by water constrained by vicinal hydrophobes, which lowers the dielectric susceptibility and induces a 'redshift' of the relaxation frequency in the hydration shell was presented. The reduction of H-bond exchange possibilities of water molecules at a hydrophobic interface was analyzed. Water molecules were found to exchange H bonds with neighbours at a fast rate (Vb ≅1.7 × 10 13 s-1 at room temperature. The results also demonstrated the way in which proteins enhance their intramolecular interactions as they fold or associate.

Original languageEnglish (US)
Article number228104
JournalPhysical Review Letters
Volume93
Issue number22
DOIs
StatePublished - Nov 29 2004
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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