Synthetic Protein Nanostructure (IMAGE) University of Texas at Austin Caption As a proof of concept, a team of researchers at the University of Texas at Austin built tiny structures that resemble two doughnuts stacked on top of each other by applying electrical charges to specific spots on naturally occurring proteins. Credit University of Texas at Austin 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.