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J Virol. 1983 January; 45(1): 165-172

Protein covalently bound to minus-strand DNA intermediates of duck hepatitis B virus.

ABSTRACT

Analysis of duck hepatitis B viral DNA by gel electrophoresis, Southern blotting, and binding to benzoylated naphthoylated DEAE-cellulose showed that a protein is bound to the minus-strand virion DNA as well as to the full-length single strand, minus-strand species, and minus-strand DNA intermediates isolated from replicating complexes present in infected duck liver. By utilizing a modified dideoxynucleotidyl sequencing method, it was shown that the protein is covalently bound to the smallest detectable growing strands (ca. 30 bases) and that minus-strand synthesis begins at a unique site. These results support the notion that the protein may function as a primer for synthesis of the minus-strand DNA.

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