Abscisic Acid Inside Its Receptor (IMAGE) University of California - Riverside Caption This image shows abscisic acid (purple molecule at center) inside its receptor. Carbon atoms are purple, oxygen atoms are red and hydrogen atoms are not shown. The phosphatase, which also makes contact with the receptor, is shown in green. Credit Cutler lab, UC Riverside. 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.