BiochemistryMechanism of the inhibition of mutagenicity of a benzo[a]pyrene 7,8-diol Communicated by John J. Burns, May 5, 1982 ABSTRACT Riboflavin 5'-phosphate (flavin mononucleotide; FMN) inhibits the mutagenicity of (±)-7P3,8a-dihydroxy-9a,10a- epoxy-7,8,9,10-tetrahydrobenzo[a] Coincubation of 10, 25, and 50 nmol of FMN with strain TA100 of histidine-dependent Salmonella typhimurium inhibits the mu-
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