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A simplified depiction of two protomers in opposition on a cross section of a pentamer. The positions of the structural peptides are indicated as is the canyon that circumscribes the central axis of the pentamer. The pocket (asterisked) at the base of the canyon is shown without the pocket factor or occupied by a stylized capsid-binding molecule (red). VP1-VP4 Viral protein (Adapted from McErlean et al. [61])
