aGPCR activation (IMAGE) University of Chicago Caption a) Cryo-EM model of Latrophilin3. The transmembrane region (7TM) is embedded in the cell membrane, and the GAIN domain and tethered agonist (TA) are part of the extracellular region. b) Antibodies (sAB) change the configuration of the GAIN domain and activate the receptor. Credit Szymon Kordon Usage Restrictions Please credit License Original 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.