Saxena Chaitanya, Wang Haiyu, Kavakli I Halil, Sancar Aziz, Zhong Dongping
Department of Physics, 174 West 18th Avenue, The Ohio State University, Columbus, Ohio 43210, USA.
J Am Chem Soc. 2005 Jun 8;127(22):7984-5. doi: 10.1021/ja0421607.
In this communication, we report the ultrafast dynamics of resonance energy transfer in a blue-light photoreceptor, Vibrio cholerae cryptochrome. The transfer was observed to occur in 60 ps. We also studied the local rigidity and solvation around the binding site of the photoantenna molecule. The results for the first time show energy transfer in cryptochrome suggesting some mechanistic similarities between photolyase that repairs damaged DNA and cryptochrome that mediates blue-light signaling.
在本通讯中，我们报告了蓝光光感受器霍乱弧菌隐花色素中共振能量转移的超快动力学。观察到能量转移在60皮秒内发生。我们还研究了光天线分子结合位点周围的局部刚性和溶剂化情况。结果首次表明隐花色素中存在能量转移，这暗示了修复受损DNA的光解酶与介导蓝光信号的隐花色素之间在某些机制上具有相似性。
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