1.14.14.141	(+)-marmesin + [reduced NADPH-hemoprotein reductase] + O2	-	
1.14.14.141	(+)-marmesin + [reduced NADPH-hemoprotein reductase] + O2	the enzyme is the first committed monooxygenase of linear furanocoumarin biosynthesis, pathway overview	
1.14.14.141	(+)-marmesin + [reduced NADPH-hemoprotein reductase] + O2	the substrate is synthesized from demethylsuberosin by the marmesin synthase, biosynthesis of furanocoumarin phytoalexin which are then excreted from the endoplasmic reticulum lumen into the cell culture medium	
1.14.14.141	5-hydroxymarmesin + [reduced NADPH-hemoprotein reductase] + O2	-	
1.14.14.141	5-hydroxymarmesin + [reduced NADPH-hemoprotein reductase] + O2	low activity, psoralen 5-monoxygenase activity	
1.14.14.141	additional information	umbelliferone is a better precursor of psoralens than either demethylsuberosin or marmesin