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TYROSINE‐SENSITIZED PHOTODIMERIZATION OF THYMINE IN AQUEOUS SOLUTION
Author(s) -
Kaneko Motohisa,
Matsuyama Akio,
Nagata Chikayoshi
Publication year - 1978
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1978.tb07612.x
Subject(s) - tyrosine , thymine , chemistry , photochemistry , dimer , aqueous solution , pyrimidine dimer , triplet state , action spectrum , sensitization , organic chemistry , molecule , biochemistry , dna , biology , immunology , dna damage
Abstract. Photodimerization of thymine in aqueous solution in the presence of tyrosine was studied with monochromatic UV irradiation. The total dimer formation was sensitized in the presence of tyrosine. The action spectrum of sensitized total dimer formation has a peak near 280 nm corresponding to the absorption maximum of tyrosine. Triplet quenchers reduced the sensitization substantially. It seems probable that tyrosine‐sensitized photodimerization of thymine occurred via triplet‐triplet energy transfer from tyrosine to thymine.