Using the acetylamino from Amycolatopsis orientalis racemization of carbamoylamino

The present invention is directed to the use of the N-acetylamino acid racemase from Amycolatopsis orientalis subspecies lurida for racemizing N-carbamoyl amino acids. DOLLAR A This use allows the 100% production of optically pure amino acids, starting from racemic hydantoins in an enzymatic overall process.