SecA Nanomotor (image) KU Leuven Caption In this rendering of the SecA nanomotor, the two pistons (colored cyan and light green) await the arrival of a protein. Cylinders, arrows and loops make up the nanomotor's mechanical parts. Credit © T. Economou 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.