Previous Article | Next Article ![]()
Journal of Virology, January 1999, p. 791-796, Vol. 73, No. 1
Laboratory of Viral Diseases, National
Institute of Allergy and Infectious Diseases, National Institutes
of Health, Bethesda, Maryland 20892-0445
Received 10 August 1998/Accepted 15 October 1998
Vaccinia virus genes are expressed in a sequential fashion,
suggesting a role for negative as well as positive regulatory mechanisms. A potential down regulator of gene expression was mapped by
transfection assays to vaccinia virus open reading frame D10, which
encodes a protein with no previously known function. Inhibition was
independent of the promoter type used for the reporter gene, indicating
that the mechanism did not involve promoter sequence recognition. The
inhibition was overcome, however, when the open reading frame of
the reporter gene was preceded by the encephalomyocarditis virus internal ribosome entry site, which excludes the possibility of
nonspecific metabolic or other antiviral effects and suggests that
capped mRNAs or cap-dependent translation might be the target of the D10 product. The inducible overexpression of the D10 gene by a
recombinant vaccinia virus severely inhibited viral protein synthesis,
decreased the steady-state level of viral late mRNA, and blocked the
formation of infectious virus.
0022-538X/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Down Regulation of Gene Expression by the
Vaccinia Virus D10 Protein

and
*
Corresponding author. Mailing address: Building 4, Room
229, 4 Center Dr., MSC 0445, National Institutes of Health, Bethesda, MD 20892-0445. Phone: (301) 496-9869. Fax: (301) 480-1147. E-mail: bmoss{at}nih.gov.
Present address: Department of Biology and Microbiology, University
of Wisconsin Oshkosh, Oshkosh, WI 54901-8640.
Present address: Strata Biosciences, Alameda, CA 94501.
This article has been cited by other articles:
Copyright © 2009 by the American Society for Microbiology. For an alternate route to Journals.ASM.org, visit: http://intl-journals.asm.org | More Info»