期刊
PHYSICAL REVIEW LETTERS
卷 107, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.158102
关键词
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资金
- U.S. Department of Energy [DE-AC52-06NA25396]
In proteins, the Mossbauer effect and neutron scattering show a broad line and a rapid increase of the conformational mean-square displacement above about 180 K. The increase, dubbed the dynamical transition, is controversial. We introduce a new interpretation of the Mossbauer effect in proteins and demonstrate that no dynamical transition is required. The increase in the mean-square displacement and the broad line are caused by fluctuations in the protein's hydration shell. Using the dielectric spectrum of these fluctuations, we predict the shape of the Mossbauer spectrum from 80 to 295 K with one dimensionless coefficient.
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