Contains FMN. The enzyme can utilize NADH and NADPH with similar reaction rates. Different from EC 188.8.131.52, FMN reductase (NADH) and EC 184.108.40.206, FMN reductase (NADPH). The luminescent bacterium Vibrio harveyi possesses all three enzymes . Also reduces riboflavin and FAD, but more slowly.
Watanabe, H. and Hastings, J.W. Specificities and properties of three reduced pyridine nucleotide-flavin mononucleotide reductases coupling to bacterial luciferase. Mol. Cell. Biochem.44 (1982) 181–187. [PMID: 6981058]