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In enzymology, a glyceollin synthase is an enzyme that catalyzes the last committed step in glyceollin biosynthesis. This enzyme has been classified as a cytochrome dependent monooxygenase. It uses cyclization of prenyl residue to convert glyceollidins (I and II) into glyceollins (I - III). This enzyme catalyzes the following chemical reaction: :2-(or 4-)dimethylallyl-(6aS,11aS)-3,6a,9-trihydroxypterocarpan + NADPH + H+ + O2 glyceollin + NADP+ + 2 H2O The five substrates of this enzyme are 2-dimethylallyl-(6aS,11aS)-3,6a,9-trihydroxypterocarpan, 4-dimethylallyl-(6aS,11aS)-3,6a,9-trihydroxypterocarpan, NADPH, H+, and O2, whereas its three products are glyceollin, NADP+, 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 NADH or NADPH as one donor, and incorporation of one atom o oxygen into the other donor. The systematic name of this enzyme class is 2-(or 4-)dimethylallyl-(6aS,11aS)-3,6a,9-trihydroxypterocarpan,NADPH:oxyge n oxidoreductase (cyclizing). This enzyme participates in isoflavonoid biosynthesis. == References == * 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Glyceollin synthase」の詳細全文を読む スポンサード リンク
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