Figure 3. Portal–capsid interactions.

(A) Sections through the capsid reconstruction perpendicular to the portal tunnel axis, at three different heights as denoted on (C) by dashed lines. (B) Interactions between the portal Wing and capsid. Portal protein subunit making interactions with the capsid is in pink. Portal subunits not making interactions are in blue. (C) Ribbon diagram of the in situ portal protein fitted into the procapsid map. (D) Interactions between the portal Clip and capsid. Portal protein subunit making closest interactions with the capsid is in green. (E) Subunits of the portal protein interacting with the capsid by their Wing regions are in magenta, labelled clockwise. (F) Subunits of the portal protein interacting via their Clip are in green. View is from the center of the portal with chains labelled as in (E).