Computer Aimulation GPCR-arrestin Complex (IMAGE) Charité - Universitätsmedizin Berlin Caption Molecular structure of arrestin (purple/cyan) bound to a GPCR (red) in the cell membrane (horizontal black lines). The published study investigated how the „core" and „tail" of the receptor induce changes in the molecular structure of arrestin (i.e. activation) and thereby stimulate receptor binding by arrestin. Credit Copyright: Naomi Latorraca and Ron Dror/Stanford University. 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.