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Structural proteins of Norwalk virus
| Protein Product | Mol. Wt. of protein (d) | No. of molecules per virion | Location in Virus particles | Function |
|---|---|---|---|---|
| VP1 | 60,000 | 180 | Capsid | Major structural protein, determines antigenic phenotype and interactions of virus with host cells |
| VP2 | 12,000–29,000 | 1–2 | Capsid | Minor structural protein, function unknown, may play a role in particle maturation and stability |
| VPg | – | 1–2 | Capsid | Minor component, likely functions as a nonstructural protein during replication |
