Determination of the g-matrix orientation in flavin radicals by high-field/high-frequency electron-nuclear double resonance

Copyright 2005 John Wiley & Sons, Ltd

Bibliographische Detailangaben
Veröffentlicht in:Magnetic resonance in chemistry : MRC. - 1985. - 43 Spec no.(2005) vom: 15. Nov., Seite S96-102
1. Verfasser: Kay, Christopher W M (VerfasserIn)
Weitere Verfasser: Schleicher, Erik, Hitomi, Kenichi, Todo, Takeshi, Bittl, Robert, Weber, Stefan
Format: Aufsatz
Sprache:English
Veröffentlicht: 2005
Zugriff auf das übergeordnete Werk:Magnetic resonance in chemistry : MRC
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Flavins Free Radicals
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520 |a A high-microwave-frequency/high-magnetic-field pulsed electron-nuclear double resonance (ENDOR) study performed at 94 GHz on the flavin semiquinone cofactor of Xenopus laevis (6-4) photolyase in its neutral radical state is presented. Although the principal values of the flavin radical's g-matrix are not fully resolved in the 94-GHz EPR spectrum in a nonoriented sample, the orientation of the principal axes of g is obtained by exploiting the orientation selection of the proton ENDOR signals from the methyl protons at C-8alpha and the deuteron ENDOR signals from D-5 in an enzyme sample in deuterated buffer. This procedure for assigning the orientation of g relative to the molecular frame makes use of commercially available ENDOR instrumentation without the necessity to perform single-crystal studies 
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650 4 |a Research Support, Non-U.S. Gov't 
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700 1 |a Schleicher, Erik  |e verfasserin  |4 aut 
700 1 |a Hitomi, Kenichi  |e verfasserin  |4 aut 
700 1 |a Todo, Takeshi  |e verfasserin  |4 aut 
700 1 |a Bittl, Robert  |e verfasserin  |4 aut 
700 1 |a Weber, Stefan  |e verfasserin  |4 aut 
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