Prephenate dehydrogenase

In enzymology, a prephenate dehydrogenase is an enzyme that catalyzes the chemical reaction


 * prephenate + NAD+ $$\rightleftharpoons$$ 4-hydroxyphenylpyruvate + CO2 + NADH

Thus, the two substrates of this enzyme are prephenate and NAD+, whereas its 3 products are 4-hydroxyphenylpyruvate, CO2, and NADH.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-CH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is prephenate:NAD+ oxidoreductase (decarboxylating). Other names in common use include hydroxyphenylpyruvate synthase, and chorismate mutase---prephenate dehydrogenase. This enzyme participates in phenylalanine, tyrosine and tryptophan biosynthesis and novobiocin biosynthesis.

Structural studies
As of late 2007, two structures have been solved for this class of enzymes, with PDB accession codes and.