Intramolecular Electron Transfer in the Photooxidized Peptides Tyrosine-Histidine and Histidine-Tyrosine: A Time-Resolved CIDNP Study

被引：20
|
作者：
Morozova, Olga B. [1 ]
Yurkovskaya, Alexandra V. [1 ]
机构：
[1] Int Tomog Ctr, Novosibirsk 630090, Russia
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2010年 / 49卷 / 43期
关键词：
dynamic nuclear polarization; electron transfer; histidyl radicals; nuclear paramagnetic relaxation; photooxidation; LASER FLASH-PHOTOLYSIS; AQUEOUS-SOLUTION; AMINO-ACIDS; TRYPTOPHAN; 2,2'-DIPYRIDYL; DIPEPTIDE; REDUCTION;
D O I：
10.1002/anie.201003780
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Invisible to other methods, reactions of the histidyl radical could be followed by NMR spectroscopic detection of the histidine signal through the use of time-resolved chemically induced dynamic nuclear polarization (CIDNP). CIDNP decay of the His signal during photooxidation of the peptides His-Tyr and Tyr-His pointed to electron transfer from the tyrosine residue to the histidyl radical (see scheme for Tyr-His). © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：7996 / 7999
页数：4
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