Figure 1

Protein locations in a capsid of bovine papilloma virus. (a) Experimental protein density map. (b) Superimposition of the protein density map with a dodecahedral tessellation of the sphere. (c) The idealized quasilattice of protein density maxima.Reuse & Permissions

Figure 2

Pentagonal QC order commensurate with the dodecahedron 2D net and the BPV capsid. Protein positions are presented by full circles. Dodecahedron faces are shown by large red pentagons. Five arrows in the center of each panel correspond to 2D basis translation vectors ${\mathbf{a}}_i$ of the quasilattice. (a) Conventional pentagonal Penrose quasilattice (PPQ). (b) Quasilattice after the action of the phason strain field responsible for the matching of the pentagonal order at dodecahedron faces. The resulting switching of nodes is shown in the shaded zone. (c) The final form of the quasilattice after the action of the chiral phason strain field. (d) The dodecahedron 2D net decorated with the chiral pentagonal quasilattice (six of 12 faces of the net are shown). In the folded form it corresponds to the BPV capsid.Reuse & Permissions