Hydantoin racemase

Hydantoin racemase (, 5'-monosubstituted-hydantoin racemase, HyuA, HyuE) is an enzyme with systematic name D-5-monosubstituted-hydantoin racemase. This enzyme catalyses the following chemical reaction


 * D-5-monosubstituted hydantoin $$\rightleftharpoons$$ L-5-monosubstituted hydantoin

This enzyme is a part of the reaction cascade known as the "hydantoinase process".