Abstract:
:Immune precipitation with monospecific antiserum was employed to study the intracellular synthesis of viral glycoproteins gp85 and gp37. Labeled gp85 and gp37 were detected from lysates of cells transformed with Rous sacroma virus, strain B77, after long-term labeling with radioactive glucosamine or phenylalanine. Immune precipitates prepared from lysates of cells pulse-labeled for a short time resulted in a glycoprotein of 92,000 molecular weight (gp92). This precursor was stable in B77-transformed Japanese quail cells for several hours, whereas in chicken cells it could be chased within a few hours into virion glycoproteins gp85 and gp37. Similarly, the precursor for the structural viral proteins, pr76, persisted in quail cells much longer than in chicken cells. During very short pulses or in the presence of a glucosamine block (25 mM glucosamine), the antiserum against the viral envelope glycoproteins detected a precursor of higher electrophoretic mobility of approximately 70,000 molecular weight, "p70." Fucose label entered gp92 and gp85 as well as "p70." Proteolytic treatment of virion-bound gp85 in vitro generated two discrete glycoproteins of 62,000 and 45,000 molecular weight, but did not result in an increase in the amount of gp37.
journal_name
J Viroljournal_title
Journal of virologyauthors
Moelling K,Hayami Mdoi
10.1128/JVI.22.3.598-607.1977subject
Has Abstractpub_date
1977-06-01 00:00:00pages
598-607issue
3eissn
0022-538Xissn
1098-5514journal_volume
22pub_type
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