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J Virol. 1983 May; 46(2): 384-393

Some enzymatic activities associated with purified parapoxvirions.

ABSTRACT

Purified virions of milker's nodule virus, a parapoxvirus, were shown to contain an RNA polymerase, a nucleotide phosphohydrolase, and a protein kinase associated with or encapsulated within the DNA-containing core of the virus. In vitro, the activated viral RNA polymerase transcribed only 7 to 8% of the genome, in the form of 8S to 14S polyadenylated RNA molecules which were complementary to sequences present in milker's nodule virus DNA but not vaccinia virus DNA or DNA prepared from the host cells in which the virus was propagated. Sodium dodecyl sulfate-polyacrylamide gel electrophoretic analysis showed that in vitro, the activated viral protein kinase phosphorylated viral polypeptides of 95, 60, 33.5, 15, and 13.8 kilodaltons.