Assembly Architecture and DNA Binding of the Bacteriophage P22 Terminase

Assembly Architecture and DNA Binding of the Bacteriophage P22 Terminase

Three-dimensional reconstruction of the nonameric ring assembly (yellow) of the terminase small subunit (gp3) of the Salmonella bacteriophage P22. The image at the left (foreground) shows the compatibility of the terminase channel with passage of double-stranded DNA (green). The image at the right (background) models the fit of the terminase ring to the portal vertex (red) of the P22 procapsid (blue), which is shown in a cutaway view

Gabriel Lander – Daniel Nemecek, John E. Johnson, Sherwood R. Casjens, George J. Thomas Jr.