Rotavirus Outer Capsid Protein VP7 (G3) and VP4 (P) (VP7/VP4 (G3P))

Rotavirus G3P antigen refers to the outer capsid proteins of the Rotavirus, specifically the VP7 glycoprotein (G3 serotype) and the VP4 protease-sensitive protein (P genotype) [1]. These proteins are critical for the virus's life cycle: VP4 facilitates initial attachment to host cell receptors and membrane penetration, while VP7 forms the outer shell and mediates the final stages of viral entry [4]. As the most prominent surface features of the virion, they are the primary targets for neutralizing antibodies (IgA and IgG) elicited during natural infection or vaccination [1]. Vaccines such as RotaTeq and Rotasiil specifically incorporate G3 antigens to provide broad protection against this common cause of severe pediatric gastroenteritis [3]. Targeting these antigens has been a cornerstone of global public health efforts to reduce the burden of diarrheal disease in infants [5].

Other names

Rotavirus G3 serotypeRotavirus P genotypeVP7 glycoproteinVP4 protease-sensitive proteinRotavirus surface antigensG3P[8] antigen

Induction of neutralizing antibodies (IgA and IgG) that block viral attachment and entry into enterocytes [1, 4].