Figure 9. Structure of the bacteriophage T7 internal capsid core. The portal protein, gp8, is in red. The core proteins gp14, gp15, and gp16 are in green, yellow, and blue, respectively. (A and B) display side views of the core. (C and D) show top views of the core layers. (F) displays the top view of the portal protein. The figure was reproduced from reference 81.