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The Journal of Cell Biology, Vol 94, 36-41, Copyright © 1982 by The Rockefeller University Press
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JJ Bergeron, GJ Kotwal, G Levine, P Bilan, R Rachubinski, M Hamilton, GC Shore and HP Ghosh
The intracellular migration of G protein in vesicular stomatitis virus- infected cells was visualized by light and electron microscope radioautography after a 2-min pulse with [3H]mannose followed by nonradioactive chase for various intervals. The radioactivity initially (at 5-10 min) appeared predominantly in the endoplasmic reticulum, and the [3H]mannose-labeled G protein produced was sensitive to endoglycosidase H. Silver grains were subsequently (at 30-40 min) observed over the Golgi apparatus, and the [3H]mannose-labeled G protein became resistant to endoglycosidase H digestion. Our data directly demonstrate the intracellular transport of a plasmalemma- destined transmembrane glycoprotein through the Golgi apparatus.
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