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Canine parvovirus (CPV) is a highly contagious virus affecting dogs, with VP2 being one of the key structural proteins of the virus. The VP2 protein is the major capsid protein and plays a crucial role in the virus's ability to infect host cells and elicit an immune response. VP2 makes up approximately 90% of the viral capsid and is involved in host cell receptor binding, viral entry, and the assembly of new virions.Structurally, VP2 assembles into an icosahedral capsid, providing stability and protection to the viral genome. The protein is known for its antigenic variability, which allows the virus to evade the host's immune system. Mutations in the VP2 gene are responsible for the emergence of new CPV strains with different host ranges and pathogenicities.Functionally, the VP2 protein is a major target for neutralizing antibodies. Vaccines against CPV often include the VP2 protein to induce immunity. The immune response to VP2 is critical for the protection of dogs against parvovirus infection, making it an important protein in both the pathogenicity of the virus and the development of effective vaccines.
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