Cancer Medicine (IMAGE) University of Copenhagen - Faculty of Science Caption His-tag acylation can accurately target complex yarn-like protein structures and also makes it possible to produce drugs with entirely new characteristics. Credit Pexels 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.