New Protein Fold (image) Bielefeld University Caption The Bielefeld chemist Michael Schwake and his colleagues have discovered a new protein fold. At its head (the red helices), this protein can bind enzymes and viruses. The tunnel in the protein structure is colored yellow. Credit Illustration: Nature Usage Restrictions Image may only be used with appropriate caption or credit. 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.