Relaxation of non-equilibrium states of myoglobin studied by Mössbauer spectroscopy |
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| Authors: | F Parak V E Prusakov |
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| Institution: | (1) Fakultät für Physik, E17, Technische Universität München, 85748 Garching, Germany;(2) Institute of Chemical Physics, Russian Academy of Sciences, 117334 Moscow, Russia |
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| Abstract: | A metastable Fe(II) low-spin myoglobin complex with H2O at the sixth coordination place has been produced by X-ray irradiation of metmyoglobin at 80 K. The relaxation into the equilibrium state of deoxymyoglobin was investigated as a function of temperature. It starts at temperatures above 140 K and cannot be understood by assuming one well-defined activation energy. The relaxation is, however, well described by assuming a Gaussian barrier height distribution. |
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