Role of the membrane anchoring and cytoplasmic domains in intracellular transport and localization of viral glycoproteins
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The role of the transmembrane and the cytoplasmic regions of viral glycoproteins namely, the envelope glycoprotein gD of herpes simplex virus and the integral membrane glycoprotein E3-11.6 K of the nonenveloped adenovirus that are localized in the nuclear envelope has been studied. Chimeras of the cell surface glycoprotein G of vesicular stomatitis virus containing the transmembrane and (or) the cytoplasmic-tail domains of either herpes simplex virus gD or adenovirus E3-11.6 K protein were examined for their intracellular transport and localization. The results show that hybrids containing the membrane anchoring and (or) the cytoplasmic tail domains of either herpes simplex virus gD or adenovirus E3-11.6 K glycoprotein were localized in the nuclear envelope as well as in the endoplasmic reticulum and the Golgi complex. These results suggest that the membrane anchoring and the cytoplasmic domains of herpes simplex virus glycoproteins gD, as well as the adenovirus integral membrane protein E3-11.6 K, were necessary for localization in the nuclear envelope and could influence retention in the endoplasmic reticulum and the Golgi complex.
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