L- and D-Aspartate at the Binding Site (IMAGE) University of Groningen Caption This illustration shows L- and D-aspartate on the binding site of the transport protein. Credit Valentina Arkhipova, University of Groningen Usage Restrictions With credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.