Glutamate-Binding Segments Rock (IMAGE) Johns Hopkins Medicine Caption The glutamate-binding segments (blue, yellow) of ionotropic glutamate receptors undergo a "rocking" motion during activation by glutamate (red). (The dotted line provides a point of reference.) Credit Albert Lau Usage Restrictions None 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.