Slider (IMAGE) Moscow Institute of Physics and Technology Caption Attempts to solve the structure of ChR2 go right back to the time of its discovery in 2003. But despite the efforts of numerous research groups from across the world, the structure of the protein in its natural state has remained unknown. Now that researchers have the structure, meaningful mutations can be introduced into the protein to adjust its properties to the requirements of a specific experiment. Credit MIPT Press Office 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.