A putative blue-light receptor from Drosophila melanogaster

Satoshi Okano, Shin Ichiro Kanno, Masashi Takao, Andre P.M. Eker, Kunio Isono, Yasuo Tsukahara, Akira Yasui

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


A gene encoding a 62.5 kDa homolog of Drosophila melanogaster photolyase was isolated. Purified recombinant protein contained a flavin adenine dinucleotide chromophore. The recombinant protein did not show photolyase activity for either cyclobutane pyrimidine dimers or 6-4 photoproducts in vitro as well as in vivo in Escherichia coli host cells, suggesting that the protein is not a DNA repair enzyme but a blue-light photoreceptor. Reverse transcription polymerase chain reaction analysis showed that the gene is more expressed in head than in body and that it is more expressed in antennae than in legs, wings and mouth appendages. In a phylogenetic tree of the photolyase family, the Drosophila photolyase homolog is located in a cluster containing 6-4 photolyases and mammalian photolyase homologs, which is only distantly related to the clade of higher plant blue-light photoreceptors. The mammalian photolyase homologs are more closely related to Drosophila 6-4 photolyase than to the Drosophila photolyase homolog, suggesting different roles of the photolyase homologs.

Original languageEnglish
Pages (from-to)108-113
Number of pages6
JournalPhotochemistry and Photobiology
Issue number1
Publication statusPublished - 1999 Jan

ASJC Scopus subject areas

  • Radiation
  • Biochemistry
  • Physical and Theoretical Chemistry


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