Ultrafast photoreaction dynamics in protein nanospaces (PNS) as revealed by fs fluorescence dynamics studies on photoactive yellow protein (PYP) and related systems

被引：1
|
作者：
Mataga, N [1 ]
Chosrowjan, H [1 ]
Taniguchi, S [1 ]
Hamada, N [1 ]
Tokunaga, F [1 ]
机构：
[1] Inst Laser Technol, Nishi Ku, Osaka 5500004, Japan
来源：
FEMTOCHEMISTRY AND FEMTOBIOLOGY: ULTRAFAST EVENTS IN MOLECULAR SCIENCE | 2004年
关键词：
D O I：
10.1016/B978-044451656-5/50080-3
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Ultrafast photoreactions in PNS of PYP have been studied by means of A fluorescence up conversion method. Conclusions obtained are: (a) Photoreaction in PNS (chromophore twisting) occurs from vibrationally unrelaxed fluorescence state and coherent oscillations in the fluorescence decay curves have been observed for the first time. (b) Comparative studies on fluorescence dynamics of mutants and w.-t. PYP have proved that the w.-t. PYP is best engineered for the ultrafast reaction. (c) The coherent oscillations in the fluorescence decay completely disappeared and the reaction was much slower in the denatured state, demonstrating the supremely important role of PNS for the photoreaction.
引用
收藏
页码：409 / 416
页数：8
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