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Isotropic 13 C Hyperfine Coupling Constants Distinguish Neutral from Anionic Ubiquinone‐Derived Radicals
Author(s) -
Boesch Scott E.,
Wheeler Ralph A.
Publication year - 2009
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200900503
Subject(s) - chemistry , hyperfine coupling , radical , protonation , coupling constant , hyperfine structure , isotropy , electron transfer , cytochrome c , photochemistry , computational chemistry , crystallography , atomic physics , ion , physics , organic chemistry , biochemistry , quantum mechanics , mitochondrion , particle physics
A radical notion: Calculated isotropic 13 C hyperfine coupling constants are distinctly different for the anionic ubisemiquinone model UQ .− (picture, left) rather than the protonated UQH . (picture, right) and can distinguish between the two in electron transfer proteins such as cytochrome bo3, cytochrome bc 1 , or photosynthetic reaction centers.