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对糖基基酶的非常高场EPR研究

Carole Duboc-Toia1, Alia K Hassan, Etienne Mulliez

  • 1High Magnetic Field Laboratory of Grenoble, CNRS-MPI, 25 av. des Martyrs, 38042 Grenoble, France. toia@labs.polycnrs-gre.fr

Journal of the American Chemical Society
|January 8, 2003
PubMed
概括

高场电子磁共振 (EPR) 谱学准确地确定了蛋白质基的g-tensors. 这种方法可以区分酶中的铁基,甘基和型基.

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Ideally, an unpaired electron shows a single peak in the EPR spectrum due to the transition between the two spin energy states. However, coupling interactions can occur between the spins of the unpaired electron and any neighboring spin-active nuclei. This hyperfine coupling results in hyperfine splitting, where the EPR signal is split into multiplets. The signals split into 2nI + 1 peaks, where n is the number of equivalent nuclei and I is the nuclear spin. These splitting patterns provide...