FIG. 4.

Footprints of CD155 on the surfaces of PV1 (top), PV2 (middle), and PV3 (bottom). Each figure is viewed in the same direction as those shown in Fig. 2, which is down an icosahedral twofold axis. The viral residues in the footprints are colored according to their nearest approach to a CD155 atom. The projections of the pocket factor to the CD155 footprints are outlined with a dashed line. The relative position of the CD155 footprint in the viral asymmetric unit is shown at the top of each panel. Shown at the top right is a compass to explain the notation used to describe the parts of the canyon.