Fig. 1. Structure of the ToNV polyhedrin.
a Scanning electron micrograph of native ToNV occlusion bodies prepared for diffraction experiments. Images have been cropped but are otherwise unedited. b A single polyhedrin molecule coloured from the N-terminus (blue) to the C-terminus (red) and annotated with secondary structure features. A calcium ion is shown (green). The dashed line shows the missing loop 171–174. c The dimeric unit (red and blue chains) of the OB lattice are shown in two orientations. The two-fold symmetric axis is indicated by the black ellipse.