part of flavone synthase activity https://github.com/geneontology/go-ontology/issues/30193 https://github.com/geneontology/go-ontology/issues/31969 RHEA:10448 FNS I RHEA:32755 molecular_function flavone synthase I activity Catalysis of the reaction: a flavanone + 2-oxoglutarate + O2 = a flavone + succinate + CO2 + H2O. MetaCyc:RXN-8000 GO:0033759 EC:1.14.20.5 flavanone,2-oxoglutarate:oxygen oxidoreductase (dehydrating) activity oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, with 2-oxoglutarate as one donor, and the other dehydrogenated flavone biosynthetic process