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J Virol. 1975 October; 16(4): 859-866

Sulfated components of enveloped viruses.

A Pinter and R W Compans

ABSTRACT

The glycoproteins of several enveloped viruses, grown in a variety of cell types, are labeled with 35SO4(-2), whereas the nonglycosylated proteins are not. This was shown for the HN and F glycoproteins of SV5 and Sendai virus, the E1 and E2 glycoproteins of Sindbis virus, and for the major glycoprotein, gp69, as well as for a minor glycoprotein, gp52, of Rauscher leukemia virus. The minor glycoprotein of Rauscher leukemia virus is more highly sulfated, with a ratio of 35SO4- [3H]glucosamine about threefold greater than that of gp69. The G protein of vesicular stomatitis virus was labeled when virions were grown in the MDBK line of bovine kidney cells, although no significant incorporation of 35SO4(-2) into this protein was observed in virions grown in BHK21-F line of baby hamster kidney cells. In addition to the viral glycoproteins, sulfate was also incorporated into a heterogenous component with an electrophoretic mobility lower than that of any labeled with 35SO4(-2) and [3H]leucine, this component had a much greater 35S-3H ratio than any of the viral polypeptides and thus could not represent aggregated viral proteins. This material is believed to be a cell-derived mucopolysaccharide and can be removed from virions by treatment with hyaluronidase without affecting the amount of sulfate present on the glycoproteins.

J Virol. 1975 October; 16(4): 859-866




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