trans-cis Photoisomerization of a photoactive yellow protein model chromophore in crystalline phase.
trans-cis Photoisomerization of a photoactive yellow protein model chromophore in crystalline phase.
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DOI：
10.1021/jp064984b
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发表时间：
2006-10
期刊：
影响因子：
--
通讯作者：
A. Usman;H. Masuhara;T. Asahi
中科院分区：
文献类型：
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作者：
A. Usman;H. Masuhara;T. Asahi
我们用荧光光谱和红外光谱研究了光活性黄蛋白(PYP)的模型生色团对羟基肉桂基硫苯酯在晶相中的光致反式/顺式异构化反应。通过荧光峰的移动和红外标记谱带的检查，揭示了从反式构型到顺式构型的转换。晶体填充明显地稳定了顺式光产物，这表明环境效应不同于该模型生色团的溶液分子或PYP生色团的氨基酸残基。
We have studied the photoinduced trans/cis isomerization of the protonated form of p-hydroxycinnamic thiophenyl ester, a model chromophore of the photoactive yellow protein (PYP), in crystalline phase, by both fluorescence and infrared spectroscopies. The conversion from trans to cis configuration is revealed by a shift of the fluorescence peak and by inspection of the infrared maker bands. The crystal packing apparently stabilizes the cis photoproduct, suggesting different environmental effects from the solvent molecules for this model chromophore in liquid solutions or from the amino acid residues for the PYP chromophore.