N-butanol Synthetic Pathway (image) University of California - Berkeley Caption The enzyme pathway by which glucose is turned into n-butanol is set against the silhouette of an E. coli bacterium. The pathway, taken from Clostridium bacteria and inserted into E. coli, consists of five enzymes that convert acetyl-CoA, a product of glucose metabolism, into n-butanol (C4H9OH). Credit Michelle Chang/UC Berkeley Usage Restrictions None 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.