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 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.
Saxena
Chaitanya
C
Department of Physics, 174 West 18th Avenue, The Ohio State University, Columbus, Ohio 43210, USA.
Wang
Haiyu
H
Kavakli
I Halil
IH
Sancar
Aziz
A
Zhong
Dongping
D
D016880:Anisotropy; D056931:Cryptochromes; D004255:Deoxyribodipyrimidine Photo-Lyase / Q000737:chemistry; D004735:Energy Transfer; D005182:Flavin-Adenine Dinucleotide / Q000737:chemistry; D005415:Flavins / Q000737:chemistry; D005420:Flavoproteins / Q000737:chemistry*; D005492:Folic Acid / Q000031:analogs & derivatives* / Q000737:chemistry; D007700:Kinetics; D010084:Oxidation-Reduction; D010777:Photochemistry; D010786:Photoreceptor Cells / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D014734:Vibrio cholerae
D056931:Cryptochromes; D005415:Flavins; D005420:Flavoproteins; D005182:Flavin-Adenine Dinucleotide; C032418:5,11-methenyltetrahydrohomofolate; D005492:Folic Acid; D004255:Deoxyribodipyrimidine Photo-Lyase