1 Enzyme, Different Stereochemistries (image) University of Illinois at Urbana-Champaign Caption One enzyme shapes the components of a bacterial protein into rings with right-handed (D) and left-handed (L) stereochemistries. Credit Graphic by Weixin Tang Usage Restrictions Image may be used only to accompany stories about the research described in this news release. Credit: Weixin Tang 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.