GABRIEL LANDER / SCIENCE PHOTO LIBRARY GABRIEL LANDER / SCIENCE PHOTO LIBRARY
Bacteriophage P22, computer model. Cutaway view of P22 created with molecular modelling software and data from cryo-electron microscopy. Bacteriophages are viruses that infect bacteria. P22 infects Salmonella enterica. The image shows a cutaway view of the virus 'head'. The outer layer (blue), known as the capsid, is made of protein. The interior contains tightly coiled DNA (green) and a group of proteins (red, pink) that form a portal. The portal acts as a molecular motor that powers the packaging of DNA within the virus and during the injection of DNA into a host cell. At centre bottom are proteins (orange) that form the 'tail'. Cryo-electron microscopy images specimens kept at minus 150 degrees Celsius.
Model release not required. Property release not required.