Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1518488 | Journal of Physics and Chemistry of Solids | 2005 | 6 Pages |
Abstract
Protein dynamics is studied on metmyoglobin by Mössbauer investigations with synchrotron radiation, conventional Mössbauer spectroscopy and incoherent neutron scattering. In the center of interest is the time sensitivity of mean square displacements, ãx2ã of special atoms in the protein molecule. Phonon assisted Mössbauer effect labels internal vibrations at the heme iron on a time scale from 6.5Â fs to 0.65Â ps. The incoherent neutron scattering yields quasi diffusive motions of side chain hydrogens on a time scale faster 100Â ps. The quasi diffusive broad lines in the Mössbauer spectrum indicate slow motions of larger segments of the molecule between about 100Â ns and 100Â ps.
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Authors
Fritz G. Parak, Klaus Achterhold,