Article ID Journal Published Year Pages File Type
1518488 Journal of Physics and Chemistry of Solids 2005 6 Pages PDF
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, 〈x2〉 of special atoms in the protein molecule. Phonon assisted Mössbauer effect labels internal vibrations at the heme iron on a time scale from 6.5 fs to 0.65 ps. The incoherent neutron scattering yields quasi diffusive motions of side chain hydrogens on a time scale faster 100 ps. The quasi diffusive broad lines in the Mössbauer spectrum indicate slow motions of larger segments of the molecule between about 100 ns and 100 ps.
Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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