Viral Envelope Proteins [Chemical/Ingredient] Viral Fusion Proteins [Chemical/Ingredient] C0042717 D014760 Viral Fusion Proteins Fusion Proteins, Viral Proteins, usually glycoproteins, found in the viral envelopes of a variety of viruses. They promote cell membrane fusion and thereby may function in the uptake of the virus by cells. Virus Fusion Proteins C291813 N0000011456 M0022730 11221 Viral Fusion Proteins Membrane Fusion Proteins [Chemical/Ingredient]