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J Virol, August 1998, p. 6880-6883, Vol. 72, No. 8
Laboratory of Viral Diseases, National
Institute of Allergy and Infectious Diseases, Bethesda, Maryland
20892-0445
Received 6 March 1998/Accepted 18 April 1998
Transcription of the vaccinia virus genome is mediated by a
virus-encoded multisubunit DNA-dependent RNA polymerase in conjunction with early-, intermediate-, and late-stage-specific factors. Previous studies indicated that two virus-encoded proteins (capping enzyme and
VITF-1) and one unidentified cellular protein (VITF-2) are required for
specific transcription of an intermediate promoter template in vitro.
We have now extensively purified an additional virus-induced
intermediate transcription factor with a native mass of approximately
100 kDa.
0022-538X/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
A New Vaccinia Virus Intermediate
Transcription Factor
*
Corresponding author. Mailing address: National
Institutes of Health, 4 Center Dr., MSC 0445, Bethesda, MD 20892-0445. Phone: (301) 496-9869. Fax: (301) 480-1147. E-mail:
bmoss{at}nih.gov.
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