Low-frequency collective modes in dry and hydrated proteins.
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.
Bellissent-Funel
M C
MC
Laboratoire Léon Brillouin, C.E.N. Saclay, Gif-sur-Yvette, France.
Teixeira
J
J
Chen
S H
SH
Dorner
B
B
Middendorf
H D
HD
Crespi
H L
HL
D003903:Deuterium; D017666:Deuterium Oxide; D004735:Energy Transfer; D009502:Neutrons; D010798:Phycocyanin; D010860:Pigments, Biological; D011487:Protein Conformation; D012542:Scattering, Radiation; D014867:Water
D010860:Pigments, Biological; D014867:Water; D010798:Phycocyanin; D003903:Deuterium; D017666:Deuterium Oxide