Rotavirus structural proteins (VP)

Rotavirus structural proteins are components of the rotavirus virion essential for its architecture, infectivity, and replicative cycle. The major structural proteins include VP1 (RNA-dependent RNA polymerase), VP2 (core shell), VP3 (guanylyltransferase/methyltransferase), VP4 (spike protein mediating cell attachment/entry), VP6 (forms the intermediate capsid layer), and VP7 (outer capsid glycoprotein). These proteins form three concentric layers that encapsulate the virus's 11-segment double-stranded RNA genome. VP4 and VP7 are the main antigens recognized by neutralizing antibodies, making them targets for current vaccines, and the VP6 protein is commonly used as a biomarker for laboratory diagnosis. The collective term "rotavirus structural proteins" is a functional grouping; each protein has a distinct sequence, role, and relevance in infection, diagnostics, or immunology. There are currently no direct small-molecule therapeutics targeting these proteins; intervention is mainly via vaccine-elicited immunity.

Other names

Viral protein (VP)Rotavirus capsid proteinRotavirus virion protein

Neutralizing antibody: blocks viral attachment or penetration (for VP4, VP7); Vaccine-mediated immunity