Intramolecular Electron Transfer in the Photooxidized Peptides Tyrosine-Histidine and Histidine-Tyrosine: A Time-Resolved CIDNP Study
作者:Olga B. Morozova、Alexandra V. Yurkovskaya
DOI:10.1002/anie.201003780
日期:2010.10.18
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)
组氨酸自由基的反应是其他方法所看不到的,随后可以通过使用时间分辨化学诱导动态核极化(CIDNP)的NMR光谱对组氨酸信号进行检测。在肽His-Tyr和Tyr-His的光氧化过程中,His信号的CIDNP衰减表明电子从酪氨酸残基转移到组氨酸基团(请参阅Tyr-His方案)。