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Identification of phorbol ester response elements in the promoter of Epstein-Barr virus putative lytic switch gene BZLF1.

Identification of phorbol ester response elements in the promoter of Epstein-Barr virus putative lytic switch gene BZLF1.

Abstract

Identification of phorbol ester response elements in the promoter of Epstein-Barr virus putative lytic switch gene BZLF1. E Flemington and S H Speck Division of Tumor Virology, Dana-Farber Cancer Institute, Boston, Massachusetts. ABSTRACT The product of the Epstein-Barr virus BZLF1 gene encodes a protein which is related to c-fos, it has been shown to bind specifically to a consensus AP-1 site, and its expression in latently Epstein-Barr virus-infected lymphocytes is sufficient to trigger the viral lytic cycle. We identified several elements within the BZLF1 promoter (Zp) which are responsive to the phorbol ester 12-O-tetradecanoylphorbol-13-acetate (TPA), an inducer of the viral lytic cycle. These elements fall into two classes based on the factors which bind to these sequences and their resulting functional behavior. Four of the elements are homologous (ZI elements) and share homology to a protein-binding domain in the promoter region of the coordinately expressed BRLF1 gene. When cloned upstream of heterologous promoters, the ZI elements function as silencers which exhibit TPA-inducible enhancer activity. A distinct TPA-responsive element (ZII) is located near the TATA box and shares homology with the AP-1-binding site in the c-jun promoter. A synthetic oligonucleotide with a sequence corresponding to the ZII element effectively competes for binding of nuclear factors to the c-jun AP-1 site. Furthermore, we found that a complex of c-jun and c-fos bound to the ZII domain. CiteULike Connotea Delicious Digg Facebook Google+ Mendeley Reddit StumbleUpon Twitter What's this? « Previous | Next Article » Table of Contents This Article J. Virol. March 1990 vol. 64 no. 3 1217-1226 » Abstract PDF Classifications Research Article Services Email this article to a colleague Similar articles in ASM journals Alert me when this article is cited Alert me if a correction is posted Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of JVI Download to citation manager Reprints and Permissions Copyright Information Books from ASM Press MicrobeWorld Citing Articles Load citing article information Citing articles via Web of Science Citing articles via Google Scholar Google Scholar Articles by Flemington, E. Articles by Speck, S. H. Search for related content PubMed PubMed citation Articles by Flemington, E. Articles by Speck, S. H. Related Content Load related web page information Social Bookmarking CiteULike Connotea Delicious Digg Facebook Google+ Mendeley Reddit StumbleUpon Twitter What's this? current issue January 2012, volume 86, issue 1 Spotlights in the Current Issue Two Xenotropic Murine Leukemia Virus Parents Breaking the Entry Targeting Barrier Complex Morphology and Dynamic Development of Poliovirus Membranous Replication Structures Revealed A Staining Artifact Explains Apparent Varicella-Zoster Virus Protein Expression in Neurons Recent Mumps Outbreaks Are Not Caused by Immune Escape Alert me to new issues of JVI About JVI Subscribers Authors Reviewers Advertisers Inquiries from the Press Permissions & Commercial Reprints ASM Journals Public Access Policy JVI RSS Feeds 1752 N Street N.W. • Washington DC 20036 202.737.3600 • 202.942.9355 fax • journals@asmusa.org Print ISSN: 0022-538X Online ISSN: 1098-5514 Copyright © 2011 by the American Society for Microbiology. For an alternate route to JVI .asm.org, visit: http://intl- JVI .asm.org | More Info» var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); var pageTracker = _gat._getTracker("UA-5821458-1"); pageTracker._trackPageview();
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