JVI Figure table search 04
Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrowReprints and Permissions
Right arrow Copyright Information
Right arrow Books from ASM Press
Right arrow MicrobeWorld
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Yang, M.
Right arrow Articles by Ruyechan, W. T.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Yang, M.
Right arrow Articles by Ruyechan, W. T.
Journal of Virology, October 2004, p. 10939-10952, Vol. 78, No. 20
0022-538X/04/$08.00+0     DOI: 10.1128/JVI.78.20.10939-10952.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

The DNA Element Controlling Expression of the Varicella-Zoster Virus Open Reading Frame 28 and 29 Genes Consists of Two Divergent Unidirectional Promoters Which Have a Common USF Site

Min Yang, John Hay, and William T. Ruyechan*

Department of Microbiology and Immunology and Witebsky Center for Microbial Pathogenesis and Immunology, University at Buffalo, Buffalo, New York

Received 26 March 2004/ Accepted 17 June 2004

The mechanism of the divergent expression of the varicella-zoster virus (VZV) ORF 28 and ORF 29 genes from a common intergenic DNA element, the ORF 28/29 promoter, is of interest based on the observation that both genes are expressed during VZV lytic infection but only the ORF 29 gene is expressed in latently infected neurons. In the work presented here, expression driven by the ORF 28/29 intergenic region was examined. We found that the promoter activity towards the ORF 29 direction is more responsive to activation by the major viral transactivator IE62 than that towards the ORF 28 direction in the context of our experimental system. Analysis of the functional DNA elements involved in IE62 activation of the bidirectional ORF 28/29 regulatory element revealed that in both transfected and VZV-superinfected cells it is a fusion of two unidirectional promoters overlapping an essential USF binding site but with distinct TATA elements. A single TATA element directs expression in the ORF 28 direction, whereas the two TATA elements directing ORF 29 gene expression are alternatively and differentially utilized for transcription initiation. We also identified an Sp1 site localized proximal to the ORF 28 gene which functions as an activator element for expression in both directions. These results indicate that the ORF 28 and ORF 29 genes can be expressed either coordinately or independently and that the observed expression of only the ORF 29 gene during VZV latency may involve neuron-specific cellular factors and/or structural aspects of the latent viral genome.

* Corresponding author. Mailing address: Department of Microbiology and Immunology, 138 Farber Hall, University at Buffalo, Buffalo, NY 14214-3000. Phone: (716) 829-2312. Fax: (716) 829-2376. E-mail: ruyechan{at}buffalo.edu.

Journal of Virology, October 2004, p. 10939-10952, Vol. 78, No. 20
0022-538X/04/$08.00+0     DOI: 10.1128/JVI.78.20.10939-10952.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:



Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
J. Bacteriol. Mol. Cell. Biol. Microbiol. Mol. Biol. Rev.
Clin. Vaccine Immunol. ALL ASM JOURNALS

Copyright © 2004 by the American Society for Microbiology. All rights reserved.