Viral Capsid Proteins Are Segregated in Structural Fold Space
Figure 2
Comparison in structural fold space of capsid proteins and non-capsid ones.
Capsid proteins form large, highly symmetric protein shells (left), while generic proteins form other types of complexes (right), exemplified here by an RNA polymerase elongation complex. Overlap between the structural space of viral capsid proteins and that of generic proteins signifies the set of non-capsid ‘relatives’ of capsid proteins. Figure is for illustration purposes and not drawn to scale.