Beta-lactam enzymatic reaction (VIDEO) DOE/Lawrence Berkeley 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 This video shows steps of the enzymatic reaction that makes a double-ringed molecule, which is the structural starting point to produce molecules in a large class of antibiotics. Credit Credit: Patrick Rabe/Oxford University Usage Restrictions Use credit License Original 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.