Keeping Plant-Cell Motors on Track (IMAGE) Washington University in St. Louis Caption Biologists at Washington University in St. Louis have discovered the molecular brakeman that holds kinesins in check until it's their turn to move. (From left:) Ram Dixit, Anindya Ganguly, Graham Burkart and Yuanwei Fan. Credit Joe Angeles/Washington University Usage Restrictions For editorial 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.