GPCR (3 of 3) (image) DOE/SLAC National Accelerator Laboratory Caption This rendering shows the structure of the human serotonin receptor bound to ergotamine (green), an anti-migraine drug. The image also shows lipids (gray), palmitic acid (blue) and cholesterol (yellow). Credit The Scripps Research Institute Usage Restrictions None 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.