(IMAGE) Goethe University Frankfurt Caption With the aid of a high-resolution cryo-electron microscope, the group led by Robert Tampé, in collaboration with colleagues at the University of California in San Francisco, succeeded in determining the structure of an asymmetrical ABC transporter complex. Credit Robert Tampé 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.