Rotavirus VP7 G4 glycoprotein (VP7) (VP7)

Rotavirus VP7 G4 glycoprotein is a 37-kDa calcium-dependent glycoprotein that forms the outer shell of the rotavirus virion (UniProt). It is a critical structural protein that determines the G-genotype of the virus and serves as a primary target for neutralizing antibodies (PubMed). The protein functions by mediating the late stages of viral entry, specifically the penetration of the host cell membrane and the subsequent uncoating of the viral particle (NCBI). In clinical medicine, the G4 genotype is recognized as one of the most prevalent strains causing severe diarrhea and gastroenteritis in infants worldwide (CDC). Consequently, VP7 G4 is a key antigenic component in multivalent vaccines such as RotaTeq, which are designed to provide broad protection against common rotavirus serotypes (FDA). Therapeutic challenges include the virus's ability to undergo antigenic drift, potentially reducing the efficacy of existing vaccines over time (Journal of Virology). Monitoring the structural integrity and genetic variation of VP7 is essential for the development of next-generation vaccines and monoclonal antibody therapies.

Other names

Outer capsid glycoprotein VP7G-proteinVP7 antigenMajor neutralization antigenRotavirus A VP7

Induction of serotype-specific neutralizing antibodies that bind to the VP7 trimer, thereby blocking viral attachment to host cells and preventing membrane penetration (PubMed, PMID: 16537540).