T=21 icosahedral capsid

T=21 icosahedral capsid is composed of 12 pentameric and 200 hexameric capsomeres for a total of 1260 capsid proteins. These capsids are skewed, and are therefore described as either right- (dextro) or left- (laevo) handed.



Icosahedric triangulation number is calculated following Caspar and Klug system