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J Virol. 1976 March; 17(3): 727-736

Purification and serological characterization of the major envelope glycoprotein from AKR murine leukemia virus and its reactivity with autogenous immune sera from mice.

J N Ihle, T P Denny and D P Bolognesi

ABSTRACT

The major envelope glycoprotein (gp71) from AKR murine leukemia virus (MuLV) was purified and its serological reactivity with heterologous and autogenous immune mouse sera was examined. Homologous and interspecies competition radioimmunoassays using antisera to Rauscher-MulV gp69/71 or Friend-MuLV gp71 or antisera to feline leukemia virus to precipitate 125I-labeled gp71 from various MuLV showed that distinct differences exist between Rauscher- or Friend-MuLV and AKR-MuLV glycoproteins. Characteristically the AKR-MuLV gp71, in contrast to FLV or RLV gp71, does not compete fully in homologous or interspecies radioimmunoassays with iodinated Friend of Rauscher glycoproteins. Purified 125I-labeled AKR-MuLV gp71, in contrast to the Rauscher- or Friend-MuLV glycoproteins, reacts with normal (autogenous immune) mouse sera in direct radioimmune precipitation assays. Competition experiments further demonstrate that this is a predominant immunological reactivity of normal mouse sera which had previously been detected by radioimmune precipitation assay against intact virions.

J Virol. 1976 March; 17(3): 727-736




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