Fig. 3: Structures of the pseudo-hexameric and pentameric capsomers.

a Ribbon diagrams of all six types of pseudo-hexameric capsomers. b Ribbon diagrams of the two types of pentameric capsomers. The C-terminal bridging helix, β-jelly roll domain, insertion domain I and insertion domain II of one P1v1 molecule in the type II pentameric capsomer are colored magenta, yellow, orange, and cyan, respectively.