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UROCANIC ACID PHOTOBIOLOGY. PHOTOOXIDATION AND SUPEROXIDE FORMATION *
Author(s) -
Morrison Harry,
Deibel Rose Marie
Publication year - 1988
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.1751-1097.1988.tb02800.x
Subject(s) - photobiology , urocanic acid , superoxide , chemistry , photochemistry , photodissociation , oxygen , biochemistry , organic chemistry , biology , botany , amino acid , enzyme , histidine
— Photolysis of urocanic acid (UA) and nitro blue tetrazolium (NBT 2+ ), under conditions wherein the NBT 2+ absorbs the light, leads to oxidation of the UA by the NBT 2+ excited state. When UA is itself photolyzed in the presence of oxygen and NBT 2+ , NBT 2+ reduction again occurs, but in this event via the intermediate formation of superoxide.