IUBMB Enzyme Nomenclature


Accepted name: marmesin synthase

Reaction: demethylsuberosin + [reduced NADPH—hemoprotein reductase] + O2 = (+)-marmesin + [oxidized NADPH—hemoprotein reductase] + H2O

For diagram of reaction click here.

Glossary: demethylsuberosin = 7-hydroxy-6-prenyl-1-benzopyran-2-one
(+)-marmesin = (S)-2-(2-hydroxypropan-2-yl)-2,3-dihydro-7H-furo[3,2-g]chromen-7-one

Systematic name: demethylsuberosin,[reduced NADPH—hemoprotein reductase]:oxygen oxidoreductase

Comments: A P-450 monoxygenase involved in psoralen biosynthesis, see EC, psoralen synthase.

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


1. Hamerski, D. and Matern, U. Elicitor-induced biosynthesis of psoralens in Ammi majus L. suspension cultures. Microsomal conversion of demethylsuberosin into (+)marmesin and psoralen. Eur. J. Biochem. 171 (1988) 369-375. [PMID: 2828055]

[EC created 2018]

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