New Class of Malaria Drugs Using Essential Calcium Enzyme (image) University of Pennsylvania School of Medicine Share Print E-Mail Caption This is a model of a stabilized, alpha-helical inhibitor of the human protease calpain. The blue inhibitor is shown as model of how it is predicted to fit into the protease active site (yellow). Credit Nataline Meinhardt and Doron C. Greenbaum, Perelman School of Medicine, University of Pennsylvania Usage Restrictions None Share Print E-Mail 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.