Ultrafast Dynamics of Resonance Energy Transfer in Cryptochrome

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 re...

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Veröffentlicht in:	Journal of the American Chemical Society 2005-06, Vol.127 (22), p.7984-7985
Hauptverfasser:	Saxena, Chaitanya, Wang, Haiyu, Kavakli, I. Halil, Sancar, Aziz, Zhong, Dongping
Format:	Artikel
Sprache:	eng
Schlagworte:	Anisotropy Biological and medical sciences Cryptochromes Deoxyribodipyrimidine Photo-Lyase - chemistry Energy Transfer Flavin-Adenine Dinucleotide - chemistry Flavins - chemistry Flavoproteins - chemistry Folic Acid - analogs & derivatives Folic Acid - chemistry Fundamental and applied biological sciences. Psychology Kinetics Molecular biophysics Oxidation-Reduction Photochemistry Photochemistry. Photosynthesis. Bioluminescence Photoreceptor Cells - chemistry Radiation-biomolecule interaction Spectrometry, Fluorescence Vibrio cholerae
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Zusammenfassung:	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.
ISSN:	0002-7863 1520-5126
DOI:	10.1021/ja0421607