T=pseudo3 icosahedral capsid protein


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The capsid is composed 60 asymmetric units made of 3 protein (T=3), for a total of 180 capsid proteins. These capsids are not T=3 symmetry as described by Caspar and Klug because the basic unit is composed of three different proteins. Since the three subunits are morphologically very similar, the structure is therefore a pseudo T=3.



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Icosahedric triangulation number is calculated following Caspar and Klug system


Comovirus, Fabavirus and Nepovirus share the same pseudo T=3 structure, eventhough subunits are not all processed.

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