A Molecular Motor Moves Along DNA (VIDEO) Harvard University This video is under embargo. Please login to access this video. Caption The molecular motor RNA polymerase rotates around DNA, shifting from one base pair to another. Credit Pallav Kosuri/Zhuang Lab/Harvard University Usage Restrictions With proper credit 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.