Picosecond protein response to the chromophore isomerization of photoactive yellow protein: Selective observation of tyrosine and tryptophan residues by time-resolved ultraviolet resonance raman spectroscopy

被引：21
|
作者：
Mizuno, Misao
Hamada, Norio
Tokunaga, Fumio
Mizutani, Yasuhisa
机构：
[1] Osaka Univ, Grad Sch Sci, Dept Chem, Osaka 5600043, Japan
[2] Osaka Univ, Venture Business Lab, JST CREST, Osaka 5650871, Japan
[3] Osaka Univ, Grad Sch Sci, Dept Earth & Space Sci, Osaka 5600043, Japan
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2007年 / 111卷 / 23期
关键词：
D O I：
10.1021/jp072939d
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：
Picosecond time-resolved ultraviolet resonance Raman (UVRR) spectra of photoactive yellow protein (PYP) were measured. UVRR bands attributed to the vibration of tyrosine and tryptophan residues showed a spectral change upon photoreaction. It was found that the hydrogen-bond strength between the chromophore and Y42 increases in the pG* state. The ultrafast change in the tryptophan band revealed that a photoinduced structural change of the chromophore had propagated to the W119 region, located 12 angstrom from the chromophore, within picoseconds.
引用
收藏
页码：6293 / 6296
页数：4
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