Aureusidin synthase

Definition:

EC Tree > 1 Oxidoreductases > 1.21 Catalysing the reaction X-H + Y-H = X-Y > 1.21.3 With oxygen as acceptor > 1.21.3.6 aureusidin synthase
Aureusidin synthase from Antirrhinum majus is a copper glycoprotein homologous to polyphenol oxidase that hydroxylates and oxidatively cyclizes chalcones to aureusidin/bracteatin aurone glucosides, responsible for yellow flower color.

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