Figure 1.GPCR dynamics (IMAGE) Tokyo Institute of Technology Caption GPCR dynamics, shown in purple as the human A2A receptor, and elegant modifications in activation pathways (allostery) indicated by the blue arrow, are critical for enabling GPCRs to bind to multiple G-proteins, shown in green and orange. Credit Nature Chemical Biology Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.