Реферат: Relative values of the H-1 and C-13 isotropic hyperfine couplings in the cationic oxidized tryptophan radical TrpH(center dot+) in aqueous solution are determined. The data are obtained from the photo-CIDNP (chemically induced dynamic nuclear polarization) enhancements observed in the microsecond time-resolved NMR spectra of the diamagnetic products of photochemical reactions in which TrpH(center dot+) is a transient intermediate. The method is validated using the tyrosyl neutral radical Tyr(center dot), whose H-1 and C-13 hyperfine couplings have previously been determined by electron paramagnetic resonance spectroscopy. Good agreement is found with hyperfine coupling constants for TrpH(center dot+) calculated using density functional theory methods but only if water molecules are explicitly included in the calculation.

Библиографическая ссылка: Kiryutin A.S. , Morozova O.B. , Kuhn L.T. , Yurkovskaya A.V. , Hore P.J.
1H and 13C Hyperfine Coupling Constants of the Tryptophanyl Cation Radical in Aqueous Solution from Microsecond Time-Resolved CIDNP
The Journal of Physical Chemistry B. 2007. V.111. N38. P.11221-11227. DOI: 10.1021/Jp073385h WOS OpenAlex

Даты:

Поступила в редакцию:	3 мая 2007 г.
Опубликована online:	1 сент. 2007 г.
Опубликована в печати:	27 сент. 2007 г.

Идентификаторы БД:

Web of science:	WOS:000249655800019
OpenAlex:	W2000464836

Цитирование в БД:

БД	Цитирований
Web of science	54
OpenAlex	58

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