Molecular structure. The poliovirus capsid contains 60 copies each of the four viral polypeptides VP1, VP2, VP3, and VP4. The arrangement of proteins in the capsid creates icosahedral symmetry.

Basavappa, R. et al. Role and mechanism of the maturation cleavage of VP0 in poliovirus assembly: structure of the empty capsid assembly intermediate at 2.9 Å resolution. Protein Sci. 3 , 1651 ...