Ross River virus E2 glycoprotein (E2 glycoprotein (RRV E2 protein))

The **Ross River virus E2 glycoprotein** is a structural envelope glycoprotein found on the surface of the Ross River virus (an alphavirus). It is synthesized as part of a polyprotein, later cleaved to form the mature E2 protein. E2 mediates attachment of the virus to host cell receptors, such as MXRA8, and plays a central role in determining host tropism and entry. Its extracellular domain contains most of the epitopes for neutralizing antibodies, making it a key antigen during infection and a candidate for vaccine or therapeutic targeting. Mutations in specific sites, such as amino acid 218, are known to alter binding properties and viral infectivity. E2 forms a heterodimer with the E1 glycoprotein, necessary for virus assembly and membrane fusion[1][2][3][5][6].\n\n**Note:** No evidence of an established abbreviation other than "E2 glycoprotein" in the context of Ross River virus. No approved drugs target this protein directly, but it is a validated serological and therapeutic target for vaccine and antibody development.

Other names

E2 spike glycoproteinRRV E2Envelope glycoprotein E2p62 precursor (precursor form)

Experimental monoclonal antibodies inhibit virus attachment and entry by blocking E2 protein binding sites on the virion surface. Potential heparan sulfate analogues may block viral attachment by mimicking glycosaminoglycans targeted by E2.