Cryo-EM structure of the PP7-PP7 virus-like particle [top, T = 4 (h = 2; k = 0) structure, PDB ID 6N4V] compared to the previously published structure of the PP7 particle [bottom, T = 3 (h = 1; k = 1) subunits colored the same way, PDB ID 1DWN]. (left) View down the fivefold symmetry axes; (middle) view down the twofold symmetry axis; (right) a cartoon representation showing the organization of the coat-protein dimers in the T = 4 structure. The linker loop is labeled “L”, and the termini are labeled “NC”.