Tetrahydroberberine oxidase
Template:Infobox enzyme (S)-Tetrahydroberberine oxidase (EC 1.3.3.8) is an enzyme that catalyzes the final transformation in the biosynthesis of berberine, a quaternary benzylisoquinoline alkaloid of the protoberberine structural subgroup.[1][2] This reaction pathway catalyzes the four-electron oxidation of (S)-tetrahydroberberine (also known as (S)-canadine) in the presence of oxygen to produce berberine and hydrogen peroxide as products.
(S)-Tetrahydroberberine + 2 O2 ⇌ Berberine + 2 H2O2
This enzyme belongs to the family known as oxidoreductases, in this instance the CH-CH moiety acts as the electron donor with oxygen acting as the electron acceptor. The systematic name of this enzyme is (S)-tetrahydroberberine:oxygen oxidoreductase; but it is also known as (S)-THB oxidase, tetrahydroberberine oxidase, and decreasingly, as (S)-tetrahydroprotoberberine oxidase.[3][4]
References
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