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Alphaherpesvirus glycoprotein I This family consists of glycoprotein I form various members of the alphaherpesvirinae these include herpesvirus, varicella-zoster virus and pseudorabies virus. Glycoprotein I (gI) is important during natural infection, mutants lacking gI produce smaller lesions at the site of infection and show reduced neuronal spread. gI forms a heterodimeric complex with gE; this complex displays Fc receptor activity (binds to the Fc region of immunoglobulin). Glycoproteins are also important in the production of virus-neutralising antibodies and cell mediated immunity. The alphaherpesvirinae have a dsDNA gnome and have no RNA stage during viral replication.
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