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J Virol. 1990 November; 64(11): 5376-5382

Vaccinia virus gene encoding a 30-kilodalton subunit of the viral DNA-dependent RNA polymerase.

S S Broyles and M J Pennington

Department of Biochemistry, Purdue University, West Lafayette, Indiana 47907-6799.

ABSTRACT

Antibody was raised against purified vaccinia virus RNA polymerase and used to screen a recombinant vaccinia virus-lambda gt11 library. The DNA from several immunopositive clones was shown by Southern hybridization to originate from the vaccinia virus HindIII E fragment. The nucleotide sequence of the RNA polymerase subunit gene predicts a polypeptide 287 amino acids in length and 30,000 daltons in mass. An early transcript with a 5' terminus just upstream of the putative initiation codon was identified by S1 nuclease protection and primer extension analyses, demonstrating that this RNA polymerase subunit is expressed as an early viral gene product. The RNA polymerase subunit was synthesized by a bacterial expression vector to demonstrate that it corresponds to the previously described 37,000-dalton RNA polymerase subunit.

J Virol. 1990 November; 64(11): 5376-5382




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Copyright © 1990 by the American Society for Microbiology. All rights reserved.