Ultrafast Pump-Probe Study of the Excited-State Charge-Transfer Dynamics in Blue Copper Rusticyanin

被引：15
|
作者：
Bizzarri, Anna Rita [1 ]
Brida, Daniele [2 ]
Santini, Simona [1 ]
Cerullo, Giulio [2 ]
Cannistraro, Salvatore [1 ]
机构：
[1] Univ Tuscia, Biophys & Nanosci Ctr, CNISM, Dipartimento DEB, Viterbo, Italy
[2] Politecn Milan, IFN CNR, Dipartimento Fis, I-20133 Milan, Italy
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2012年 / 116卷 / 14期
关键词：
ELECTRON-TRANSFER PROTEIN; RESONANCE RAMAN; THIOBACILLUS-FERROOXIDANS; REDOX PROTEINS; ACID STABILITY; AZURIN; P53; PLASTOCYANIN; OXIDATION; SPECTROSCOPY;
D O I：
10.1021/jp301484g
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We have used femtosecond pump-probe spectroscopy to investigate the excited-state dynamics of the anticancer blue copper protein rusticyanin, by exciting its ligand to metal charge-transfer band with 25 Is pump pulses centered at 585 nm. The charge-transfer excited state decays exponentially to the ground state with a time constant of about 230 Is, and its recovery is modulated by coherent oscillations. The Fourier transform of the oscillatory component of the signal provides most of the vibrational modes obtained by means of conventional resonance Raman studies, in addition to the low frequency modes below 80 cm(-1) believed to reflect collective motions of biological relevance.
引用
收藏
页码：4192 / 4198
页数：7
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