Prephenate Dehydrogenase

**Definition:** An enzyme that catalyzes the conversion of prephenate to p-hydroxyphenylpyruvate in the presence of NAD. In the enteric bacteria, this enzyme also possesses chorismate mutase activity, thereby catalyzing the first two steps in the biosynthesis of tyrosine. EC 1.3.1.12.

**Tree numbers:** - D08.811.399.520.250.750 - D08.811.682.660.500