Low-Temperature Interquinone Electron Transfer in Photosynthetic Reaction Centers fromRhodobacter sphaeroidesandBlastochloris viridis:  Characterization of QB-States by High-Frequency Electron Paramagnetic Resonance (EPR) and Electron−Nuclear Double Resonance (ENDOR)†

Biochemistry ◽  
2005 ◽  
Vol 44 (43) ◽  
pp. 14131-14142 ◽  
Author(s):  
Lisa M. Utschig ◽  
Marion C. Thurnauer ◽  
David M. Tiede ◽  
Oleg G. Poluektov
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Electron Transfer ◽  
High Frequency ◽  
Double Resonance ◽  
Reaction Centers ◽  
Photosynthetic Reaction Centers ◽  
Electron Nuclear Double Resonance ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic

Photochemical processes in photosynthesis studied by advanced electron paramagnetic resonance techniques

2003 ◽  
Vol 75 (8) ◽  
pp. 1021-1030 ◽  
Author(s):  
Wolfgang Lubitz
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Continuous Wave ◽  
Double Resonance ◽  
Triplet States ◽  
Photosynthetic Reaction Centers ◽  
Electron Nuclear Double Resonance ◽  
Paramagnetic Resonance ◽  
Time Resolved ◽  
Endor Spectroscopy ◽  
Electron Paramagnetic

Various continuous-wave and pulse electron paramagnetic resonance (EPR) and electron nuclear double resonance (ENDOR) experiments performed on the radical species occurring in photosynthetic reaction centers of plants and bacteria during light-induced charge separation are reviewed here. Emphasis is placed on time-resolved experiments performed on short-lived intermediate states such as radical pairs and triplet states for which also hyperfine information can be obtained from pulse ENDOR spectroscopy. Detailed insight into the electronic structure of these intermediates and their interaction with the protein environment is now becoming available.

Observation of a Flavin Semiquinone in the Resting State of Monoamine Oxidase B by Electron Paramagnetic Resonance and Electron Nuclear Double Resonance Spectroscopy†,‡

Biochemistry ◽  
1996 ◽  
Vol 35 (34) ◽  
pp. 11085-11091 ◽  
Author(s):  
Victoria J. DeRose ◽  
Jonathan C. G. Woo ◽  
William P. Hawe ◽  
Brian M. Hoffman ◽  
Richard B. Silverman ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Monoamine Oxidase ◽  
Resting State ◽  
Double Resonance ◽  
Resonance Spectroscopy ◽  
Monoamine Oxidase B ◽  
Electron Nuclear Double Resonance ◽  
Paramagnetic Resonance ◽  
Double Resonance Spectroscopy ◽  
Electron Paramagnetic
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