ribbon (IMAGE) DOE/SLAC National Accelerator Laboratory Caption A three-dimensional structure of the soil virus AMG product, an enzyme known as a chitosanase. The chitosanase is composed of two structural domains (Domain-1 in green and Domain-2 in pink). The active site at which the chemical reaction takes place is highlighted by the four yellow and red sticks. Credit (Clyde Smith/SLAC National Accelerator Laboratory) Usage Restrictions NA 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.