PHOTOCHEMICAL PROPERTIES OF THE NEW FLAVIN PHOSPHATE OF RHIZOPUS

Abstract

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.
2. FMN′ failed to react as a sensitizer in dye-sensitized photopolymerization of acrylamide.
3. Equal amount of FMN′ co-added with FMN or riboflavin inhibited the dye-sensitized photopolymerization of acrylamide.
4. FMN′ underwent photolysis more slowly than FMN in some extent.
5. These photochemical properties may be caused by conformation derived from such primary structure.