CoFactor: Flavin Mononucleotide
Flavin mononucleotide (FMN) is involved in both one and two electron transfer reactions  and in radical reactions .
Flavins can build stable semiquinone radicals under anaerobic conditions . Vitamin B2 is the universal precursor of all flavo-cofactors .
The flavin biosynthetic pathway is found in plants and microorganisms . The flavin-dependent enzyme glycine oxidase is involved in thiamine biosynthesis.
FMN can be both a prosthetic group and a coenzyme. An example mechanism in which it is an coenzyme is the enzyme alkanal monooxygenase.