<p>The FMN-binding domain is found in NAD(P)H-flavin oxidoreductases (flavin reductases), a class of enzymes capable of producing reduced flavin for bacterial bioluminescence and other biological processes, and various other oxidoreductase and monooxygenase enzymes [<cite idref="PUB00016340"/>, <cite idref="PUB00016341"/>, <cite idref="PUB00008047"/>].</p><p>This domain consists of a beta-barrel with Greek key topology, and is related to the ferredoxin reductase-like FAD-binding domain. The flavin reductases have a different dimerisation mode than that found in the PNP oxidase-like family, which also carries an FMN-binding domain with a similar topology.</p> Flavin reductase-like, FMN-binding