Rocking Reaction (VIDEO) DOE/Pacific Northwest National Laboratory This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption In bacterial nitrogenase, electrons (small e) take turns traveling from the Fe protein (gold) to catalytic centers on the MoFe proteins (teals and blues) as the complex rocks back and forth. Credit Simone Raugei/PNNL Usage Restrictions Credit Raugei/PNNL 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.