Glycoprotein C plays a role in the adsorption of duck enteritis virus to chicken embryo fibroblasts cells and in infectivity

Unlike glycoprotein C (gC) of many mammalian herpes viruses, gC of some avian herpes viruses does not play a principle role in the binding of virus to heparin sulfate proteoglycans on the cell surface. The roles of duck enteritis virus (DEV) gC on viral attachment remained unclear. In this study, we showed that gC expressed in vitro could bind to chicken embryo fibroblasts (CEF) cells and inhibit the adsorption of duck enteritis virus (DEV) onto CEF cells effectively and antiserum directed against gC inhibited the infection of DEV. Furthermore, it was confirmed that gC protein expressed in baculovirus system did not bind to heparin-Sepharose beads and virus binding to cells were independent of heparin sulfate proteoglycans on the surface of cells. Therefore, gC contributes to adsorption and infection of DEV.

► Glycoprotein C contributes to DEV plague formation and adsorption to CEF cell.
► Glycoprotein C cannot bind to the immobilized heparin.
► The heparin on the surface of cells is independent for DEV attachment.