EC Number |
Natural Substrates |
---|
1.14.20.13 | (6S)-6-hydroxyhyoscyamine + 2-oxoglutarate + O2 |
alkaloid metabolism, scopolamine is formed by oxidative transformation of hyoscyamine in several solanaceous species |
1.14.20.13 | (6S)-6beta-hydroxyhyoscyamine + 2-oxoglutarate + O2 |
- |
1.14.20.13 | (6S)-6beta-hydroxyhyoscyamine + 2-oxoglutarate + O2 |
via 6,7-dehydrohyoscyamine or not, two possible pathways for the epoxidation in the biosynthesis of scopolamine, overview |
1.14.20.13 | (6S)-hydroxyhyoscyamine + 2-oxoglutarate + O2 |
- |
1.14.20.13 | 6,7-dehydrohyoscyamine + 2-oxoglutarate + O2 |
- |
1.14.20.13 | more |
hyoscyamine 6beta-hydroxylase, a 2-oxoglutarate-dependent dioxygenase, converts L-hyoscyamine to its 6,7-epoxy derivative, scopolamine, in two sequential steps, the enzyme also catalyzes the reaaction of EC 1.14.11.11. 6,7-Dehydrohyoscyamine, a potential precursor for the last step of epoxidation, is an obligatory intermediate in the biosynthesis of scopolamine |