Reverse Metabolism (IMAGE) Rice University Caption Rice University engineering researchers Ramon Gonzalez (left) and Clementina Dellomonaco reversed one of the most efficient of all metabolic pathways -- the beta oxidation cycle -- to engineer bacteria that make biofuels at a breakneck pace. Credit Jeff Fitlow/Rice University Usage Restrictions Must 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.