IUBMB Enzyme Nomenclature


Accepted name: 7,8-dihydroneopterin oxygenase

Reaction: 7,8-dihydroneopterin + O2 = 7,8-dihydroxanthopterin + formate + glycolaldehyde

For diagram of reaction click here.

Glossary: 7,8-dihydroneopterin = 2-amino-6-[(1S,2R)-1,2,3-trihydroxypropyl]-7,8-dihydropteridin-4(3H)-one
7,8-dihydroxanthopterin = 2-amino-3,5,7,8-tetrahydropteridin-4,6-dione

Systematic name: 7,8-dihydroneopterin:oxygen oxidoreductase

Comments: The enzyme from the bacterium Mycobacterium tuberculosis is multifunctional and also catalyses the epimerisation of the 2'-hydroxy group of 7,8-dihydroneopterin (EC, 7,8-dihydroneopterin epimerase) and the reaction of EC (dihydroneopterin aldolase).

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


1. Czekster, C.M. and Blanchard, J.S. One substrate, five products: reactions catalyzed by the dihydroneopterin aldolase from Mycobacterium tuberculosis. J. Am. Chem. Soc. 134 (2012) 19758-19771. [PMID: 23150985]

[EC created 2015]

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