IUBMB Enzyme Nomenclature


Accepted name: FMN reductase [NAD(P)H]

Reaction: FMNH2 + NAD(P)+ = FMN + NAD(P)H + H+

For diagram of reaction click here.

Other name(s): FRG

Systematic name: FMNH2:NAD(P)+ oxidoreductase

Comments: Contains FMN. The enzyme can utilize NADH and NADPH with similar reaction rates. Different from EC, FMN reductase (NADH) and EC, FMN reductase (NADPH). The luminescent bacterium Vibrio harveyi possesses all three enzymes [1]. Also reduces riboflavin and FAD, but more slowly.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number:


1. 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]

[EC created 2011]

Return to EC 1.5.1 home page
Return to EC 1.5 home page
Return to EC 1 home page
Return to Enzymes home page
Return to IUBMB Biochemical Nomenclature home page