Virus particle surface protein (VSP)

Virus particle surface proteins are the structural and functional molecules that form the outer layer of virus particles, either as capsid proteins in non-enveloped viruses or envelope glycoproteins in enveloped viruses. They are essential for virus transmission and cell entry, mediating host recognition, receptor binding, and membrane fusion. Because they are exposed and immunogenic, these proteins are the principal targets for vaccines, neutralizing antibodies, and entry/fusion inhibitors. The specific protein and its function vary depending on the virus, with examples such as the spike protein of coronaviruses, hemagglutinin of influenza viruses, and E protein of flaviviruses playing crucial roles in viral infectivity and immune recognition. Note: The target as named, "Virus Particle Surface", is too generic and not standard—specificity (protein name, virus species) is needed for accurate downstream annotation.

Other names

Virus surfaceViral envelope proteinViral capsid proteinSurface antigenVirus spike proteinHemagglutininSpike proteinE glycoprotein

Inhibition of receptor binding (blocking protein-receptor interface); Inhibition of membrane fusion (blocking conformational changes necessary for fusion); Immune neutralization (antibody-mediated blockade of viral entry)