Escherichia coli K-12 substr. MG1655 Compound Class: a flavin

Superclasses: an organic heterocyclic compoundan organic heterobicyclic compounda pteridinea benzopteridine
an organic heterocyclic compoundan organonitrogen heterocyclic compounda pteridinea benzopteridine

A flavin is a chemical moiety found in the compounds FAD and FMN, both important redox cofactors involved in many important reactions in metabolism.

Flavin can exist in two different redox states, which it converts between by accepting or donating electrons. The fully oxidized form (or quinone form) accepts two electrons and two protons to become the fully reduced form (hydroquinone form). The reduced form can be oxidized to a semireduced form (semiquinone) by donating one electron and one proton. A second oxidation results in restoring the initial quinone form.

The conjugated ring system of fully oxidized flavin confers a bright yellow color, and its name is derived from flavus, Latin for yellow.

Flavins are synthesized from GTP in the form of riboflavin, which is later modified into FMN or FAD. Since mammals cannot synthesize riboflavin, it is an essential vitamin for them.

a flavin compound structure

Child Classes: a reduced flavin (4), an oxidized flavin (3)

SMILES: CC1(C=C2(C(=CC(C)=1)N([R])C3(C(=N2)C(=O)NC(=O)N=3)))

Unification Links: ChEBI:62787, PubChem:25200825

Revised 15-Jun-2011 by Caspi R, SRI International

Report Errors or Provide Feedback
Please cite the following article in publications resulting from the use of EcoCyc: Nucleic Acids Research 41:D605-12 2013
Page generated by SRI International Pathway Tools version 19.5 on Sat Nov 28, 2015, BIOCYC14B.