Beta crystallin A3 (VIDEO) Center for Genomic Regulation This video is under embargo. Please login to access this video. Caption Rotating view of the protein beta crystallin A3. The colour represents the sensitivity of each amino acid residue to mutations - ie how critical it is for stability. The redder, the more important. The video shows that many internal sites are important for stability. Credit Antoni Beltran/Centro de Regulación Genómica Usage Restrictions Credit must be given to the creator. License CC BY 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.