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J Virol. 1976 November; 20(2): 501-508

Presence of murine leukemia virus envelope proteins gp70 and p15(E) in a common polyprotein of infected cells.

ABSTRACT

The murine leukemia virus envelope proteins, p15(E) and gp70, exhibit a mode of processing distinct from that of virion core proteins according to three criteria. First, the incorporation of both p15(E) and gp70 into virions is more sensitive to the metabolic analogue 2-deoxy-D-glucose than the incorporation of core proteins. Second, the kinetics with which the newly synthesized envelope proteins appear in the released virions is delayed relative to the appearance of core proteins. Third, immunoprecipitation of large polypeptides from infected cells reveals the presence of gp70 and p15(E) in a common precursor distinct from the core polyprotein.

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