Rudy Valentine, Iowa State University (IMAGE) Iowa State University Caption Iowa State's Rudy Valentine is part of a team of researchers to identify a protein that impairs insulin signaling and puts diabetics at risk for other complications. Credit Wyeth Lynch, Iowa State University 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.