Conformation of Proteins (IMAGE) Purdue University Caption This image shows the conformation of proteins around a nutrient as it is transported across the cellular membrane. Each color represents a different protein, and the shaded area in the center shows a cavity containing the nutrient. Purdue associate professor of biological sciences Jue Chen led the team that was the first to obtain an image of this structure. Credit Jue Chen/Purdue 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.