Fig. 2. Surface representations of half of the three-dimensional map of AAV2. (A), (C) and (E) show views of the outer surface of the capsid, (B), (D) and (F) the inner surface. The surface map is colour coded in such a way that features at higher radii are shown in red whereas features at lower radii appear blue. In (A) and (B) the map is viewed down a strict two-fold symmetry axis. (C) and (D) show views down the three-fold symmetry axis and (E) and (F) down the five-fold symmetry axis. The arrow in (D) marks one of the three protrusions that block the hole at the three-fold axes.