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.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1280527 | PMC |
| http://dx.doi.org/10.1016/S0006-3495(89)82718-3 | DOI Listing |
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