Human Rhinovirus B14 Structure

Description

Rendered as a near-spherical icosahedral particle, the human rhinovirus B14 capsid is resolved as a dense mosaic of repeating protomers formed by the structural proteins VP1, VP2, and VP3 on the exterior, with VP4 lining the inner surface of the shell. Raised plateaus and intervening depressions create the characteristic “canyon” topography that encircles each fivefold vertex, while broader facets span between threefold and twofold symmetry axes. Color separation in purple and cyan helps discriminate neighboring capsomeres and the ridged edges of the capsid, emphasizing how tightly packed surface loops define the virion’s outer contour. No lipid envelope is present. Rhinovirus B14 is a classic model for receptor-mediated entry because the canyon region accommodates ICAM-1 binding in many “major group” rhinoviruses, a geometry that can limit antibody access to conserved receptor-contact residues. After attachment, conformational shifts in capsid proteins expose hydrophobic sequences and permit genome release, a step targeted historically by capsid-binding antivirals such as pleconaril that stabilize VP1 and block uncoating. These surface features are not decorative. They are where neutralization and host specificity are negotiated. Use this artwork for virology and microbiology coursework when teaching non-enveloped, positive-sense RNA picornaviruses, or for review figures in infectious disease texts discussing common cold pathogenesis, receptor usage, and antiviral drug design. It also fits public health communications that need an accurate, approachable rendering of a human respiratory pathogen. Anatomical accuracy verified by SciePro's Medical Advisory Board.