ATP-PRT Enzyme from TB Bacteria (IMAGE) The Francis Crick Institute Caption Ribbon representation of the structure of an enzyme known as ATP-PRT from TB bacteria (blue), bound to an allosteric activator (pink). Credit Luiz Carvalho Usage Restrictions None 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.