Di-cysteine S,S-tetrazine: A potential ultra-fast photochemical trigger to explore the early events of peptide/protein folding
作者:Matthew J. Tucker、Mohannad Abdo、Joel R. Courter、Jianxin Chen、Amos B. Smith、Robin M. Hochstrasser
DOI:10.1016/j.jphotochem.2012.02.014
日期:2012.4
The tetrazine chromophore holds promise as an effective photochemical trigger to achieve structural release, directed at the determination of peptide/protein motions that occur early in the folding processes. The photochemistry of 3,6-di-cysteine-S,S-tetrazines was examined by femtosecond IR transient absorption spectroscopy. Excitation of the tetrazine chromophore by visible and near UV light in the
四嗪发色团有望作为实现结构释放的有效光化学触发器,旨在确定折叠过程早期发生的肽/蛋白质运动。3,6-二-半胱氨酸-S,S-四嗪的光化学通过飞秒红外瞬态吸收光谱法进行检测。最后通过可见光和近紫外光激发四嗪发色团会产生化学惰性、结构不显眼的光产物,预计不会干扰肽和蛋白质的构象动力学。基于揭示光断裂的逐步反应途径的动力学测量,建议双半胱氨酸 S,S-四嗪通过不同于母体分子 s-四嗪的光化学途径进行光裂解,