PHOTOCHEMICAL PROPERTIES OF THE NEW FLAVIN PHOSPHATE OF RHIZOPUS

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  • 立花 精
    Department of Chemistry, Faculty of Science and Engineering, Ritsumeikan University
  • 野尻 裕三
    Department of Chemistry, Faculty of Science and Engineering, Ritsumeikan University
  • 塩出 十一
    Department of Chemistry, Faculty of Science and Engineering, Ritsumeikan University
  • 大田 賛行
    Department of Chemistry, Faculty of Science and Engineering, Ritsumeikan University

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1. The new flavin phosphate of Rhizopus, flavin cyclic 2′, 5′-mononucleotide (FMN′), was revealed to have the medium shape of fluorescence-pH curve as compared to those of FMN and FAD, of which percentage fluorescence was 95 and 83% of FMN at pH 4.3 and pH 6.9 respectively.<br>2. FMN′ failed to react as a sensitizer in dye-sensitized photopolymerization of acrylamide.<br>3. Equal amount of FMN′ co-added with FMN or riboflavin inhibited the dye-sensitized photopolymerization of acrylamide.<br>4. FMN′ underwent photolysis more slowly than FMN in some extent.<br>5. These photochemical properties may be caused by conformation derived from such primary structure.

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