title: Low-frequency collective modes in dry and hydrated proteins.
abstract: We have observed Brillouin-like low frequency collective modes in the scattering of 1 A neutrons from a fully in vivo deuterated protein. These modes are tentatively interpreted as due to short-lived coherent excitations propagating with velocities between 2,000 and 4,000 m/s in elements of the secondary structure and patches of closely associated water.
authors.affiliation: Laboratoire Léon Brillouin, C.E.N. Saclay, Gif-sur-Yvette, France.
authors.forename: M C
authors.initials: MC
authors.lastname: Bellissent-Funel
authors.forename: J
authors.initials: J
authors.lastname: Teixeira
authors.forename: S H
authors.initials: SH
authors.lastname: Chen
authors.forename: B
authors.initials: B
authors.lastname: Dorner
authors.forename: H D
authors.initials: HD
authors.lastname: Middendorf
authors.forename: H L
authors.initials: HL
authors.lastname: Crespi
mesh_terms: D003903:Deuterium; D017666:Deuterium Oxide; D004735:Energy Transfer; D009502:Neutrons; D010798:Phycocyanin; D010860:Pigments, Biological; D011487:Protein Conformation; D012542:Scattering, Radiation; D014867:Water
chemical_list: D010860:Pigments, Biological; D014867:Water; D010798:Phycocyanin; D003903:Deuterium; D017666:Deuterium Oxide