Structure of protective shell (VIDEO) Institute of Science and Technology Austria This video is under embargo. Please login to access this video. Caption The proteins of the virus capsid, which contains the genetic information, are much more flexible in their shape than previously thought. The small IP6 molecules (0:38) stabilize the protein hexamers (grey) and pentamers (orange). Credit Marti Obr, IST Austria Usage Restrictions Marti Obr, IST Austria 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.