Motor Proteins (IMAGE) Rice University Caption Motor proteins carry cargoes along microtubules in cells. A new Rice University study quantifies the proteins' interactions and how they affect their flow within the cell. Credit Kenneth Jamison/Rice University Usage Restrictions For news reporting purposes only. 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.