Topological Effects of EBNA 1 on oriP

  • Robert Orlowski
  • George Miller
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 278)


Two processes are required in order to maintain a herpesvirus in a latent state: there must be a mechanism for the viral genome to persist in the cell, and there must be mechanisms to inhibit the expression of those replicative functions which would ordinarily lead to cell death. In the specific case of the Epstein-Barr herpesvirus (EBV), the genome is maintained by an interaction between EBNA 1 and a region of EBV DNA called oriP (1–3). This interaction permits the viral genome to remain extrachromosomal and to partition in concert with cell division. The switch from latency to expression of viral replicative functions is brought about by the ZEBRA gene product (4–7). In latency there must exist a mechanism for inhibiting ZEBRA expression, probably at the transcriptional level (8).


Topological Effect Immunoaffinity Chromatography Supercoiled Plasmid Dyad Symmetry Dyad Symmetry Element 
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Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • Robert Orlowski
    • 1
  • George Miller
    • 1
    • 2
    • 3
  1. 1.Department of Molecular Biophysics and BiochemistryYale University School of MedicineNew HavenUSA
  2. 2.Department of PediatricsYale University School of MedicineNew HavenUSA
  3. 3.Department of Epidemiology and Public HealthYale University School of MedicineNew HavenUSA

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