Abstract
Portions of the pol gene of Moloney murine leukemia virus (MuLV) were expressed as fusion proteins in Escherichia coli, and the purified proteins were used to elicit antibodies in Escherichia coli, and the purified proteins were used to elicit antibodies in rabbits. The sera were used to examine the mature pol gene products contained in virion particles and identified the reverse transcriptase and a second protein, P46pol, encoded by the 3' portion of the gene. The P46 protein was not phosphorylated and was present at the same molar abundance as the reverse transcriptase. The sera were also used to detect the Pr200gag-pol intracellular precursor protein and to analyze its processing to the mature forms. The proteins formed by several Moloney MuLV mutants were analyzed. Further tests revealed cross-reactivity with Friend MuLV and feline leukemia virus proteins, but not with avian retrovirus proteins.
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