Rotavirus VP7 glycoprotein G1 type (VP7 G1)

Rotavirus VP7 glycoprotein G1 type is a 34-kDa structural protein that constitutes the major component of the outer layer of the rotavirus capsid (UniProt P04502). It plays a fundamental role in the viral life cycle by mediating the attachment and penetration of the virus into host intestinal epithelial cells, a process that is highly dependent on the presence of calcium ions to maintain the protein's trimeric structure (PubMed: 12610144). As the primary determinant of G-type (glycoprotein) serotype specificity, VP7 G1 is a dominant target for the host's humoral immune response, specifically for neutralizing antibodies that block infection (NCBI: NBK7643). In the pharmaceutical industry, this protein is the key antigenic component in several widely used live-attenuated vaccines, including Rotarix (monovalent G1P[8]) and RotaTeq (pentavalent), which are designed to prevent severe rotavirus-induced gastroenteritis in infants (WHO Vaccine Position Paper). Monitoring the genetic evolution of the VP7 G1 gene is critical for assessing vaccine effectiveness and identifying the emergence of new strains that may bypass vaccine-induced immunity (PubMed: 25447461).

Other names

Outer capsid glycoprotein VP7G1 serotype proteinVP7 proteinGlycoprotein VP7Major outer shell glycoprotein VP7

Induction of neutralizing antibodies that bind to the VP7 G1 protein, preventing viral attachment and entry into host enterocytes.