C-P lyase enzyme (IMAGE) Aarhus University Caption An illustration of the nutcracker enzyme in its closed (A) and open (B) states. The blue part of the enzyme contains the activity that crushes the stable substances, while the red part uses the energy from ATP to open the blue part. The enzyme binds one additional set of proteins that are used for closing (not illustrated). Credit Søren Kirk Amstrup Usage Restrictions Image may be used only to illustrate the research described in the accompanying release. 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.