D dopachrome decarboxylase

In enzymology, a D-dopachrome decarboxylase (EC 4.1.1.84) is an enzyme that catalyzes the chemical reaction

Hence, this enzyme has one substrate, D-dopachrome, and two products, 5,6-dihydroxyindole and CO₂.

This enzyme belongs to the family of lyases, specifically the carboxy-lyases, which cleave carbon-carbon bonds. The systematic name of this enzyme class is D-dopachrome carboxy-lyase (5,6-dihydroxyindole-forming). Other names in common use include phenylpyruvate tautomerase II, D-tautomerase, D-dopachrome tautomerase, and D-dopachrome carboxy-lyase.