Curling protein structures image (IMAGE) University of Göttingen Caption Proteinstruktur mit dem neuartigen Schalter zwischen einem Cystein- und einem Lysinrest. Credit K Tittmann 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.