1.5.1.30 FAD + NAD(P)H - 1.5.1.30 FAD + NADPH + H+ - 1.5.1.30 FMN + NAD(P)H - 1.5.1.30 FMN + NADH + H+ - 1.5.1.30 FMN + NADPH - 1.5.1.30 FMN + NADPH + H+ - 1.5.1.30 FMN + NADPH + H+ 203% activity compared to NAD+ 1.5.1.30 FMNH2 + NADP+ - 1.5.1.30 lumiflavin + NADPH + H+ - 1.5.1.30 additional information enzyme transfers reduced riboflavin 5'-phosphate to luciferase by direct channeling in vitro and in vivo, formation of donor-acceptor enzyme complex 1.5.1.30 additional information FR is a relevant source of hydrogen peroxide but superoxide radical anions are a minor by-product of the reaction 1.5.1.30 riboflavin + NADPH - 1.5.1.30 riboflavin + NADPH + H+ -