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6β-hydroxyhyoscyamine epoxidase Identifiers EC number CAS number 121479-53-6 Databases IntEnz IntEnz view BRENDA BRENDA entry ExPASy NiceZyme view KEGG KEGG entry MetaCyc metabolic pathway PRIAM profile PDB structures RCSB PDB PDBe PDBsum Gene Ontology AmiGO / EGO Search PMC articles PubMed articles In enzymology, a 6β-hydroxyhyoscyamine epoxidase (EC is an enzyme that catalyzes the chemical reaction (6S)-6-hydroxyhyoscyamine + 2-oxoglutarate + O2 scopolamine + succinate + CO2 + H2O The 3 substrates of this enzyme are (6S)-6-hydroxyhyoscyamine, 2-oxoglutarate, and O2, whereas its 4 products are scopolamine, succinate, CO2, and H2O. This enzyme belongs to the family of oxidoreductases, specifically those acting on paired donors, with O2 as oxidant and incorporation or reduction of oxygen. The oxygen incorporated need not be derived from O2 with 2-oxoglutarate as one donor, and incorporation of one atom of oxygen into each donor. This enzyme participates in alkaloid biosynthesis ii. It has two cofactors: iron and ascorbate. Nomenclature The systematic name of this enzyme class is (6S)-6-hydroxyhyoscyamine,2-oxoglutarate oxidoreductase (epoxide-forming). This enzyme is also called hydroxyhyoscyamine dioxygenase. References Hashimoto T, Kohno J and Yamada Y (1989). "6beta-Hydroxyhyoscyamine epoxidase from cultured roots of Hyoscyamus niger". Phytochemistry 28 (4): 1077–1082. doi:10.1016/0031-9422(89)80186-4.  This EC 1.14 enzyme-related article is a stub. You can help Wikipedia by expanding it.v · d · e