Amino Acid Diagram (IMAGE) Max-Planck-Gesellschaft Caption For the first time, three amino acids of one protein could be changed at the same time in a single experiment. Credit Nediljko Budisa / MPI of Biochemistry 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.