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Journal of Virology, February 1999, p. 1704-1707, Vol. 73, No. 2
0022-538X/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Physical and Functional Interactions between the Herpes Simplex
Virus UL15 and UL28 DNA Cleavage and Packaging Proteins
Kim M.
Koslowski,1
Patti R.
Shaver,1
James T.
Casey II,1
Todd
Wilson,2
Gregory
Yamanaka,2
Amy K.
Sheaffer,2
Daniel J.
Tenney,2 and
Nels
E.
Pederson1,*
Department of Microbiology and Immunology,
East Carolina University School of Medicine, Greenville, North
Carolina 27858,1 and
Department of
Virology, Bristol-Myers Squibb Pharmaceutical Research Institute,
Wallingford, Connecticut 064922
Received 2 July 1998/Accepted 27 October 1998
Herpes simplex virus (HSV) DNA is cleaved from concatemers and
packaged into capsids in infected cell nuclei. This process requires
seven viral proteins, including UL15 and UL28. UL15 expressed alone
displays a nuclear localization, while UL28 remains cytoplasmic. Coexpression with UL15 enables UL28 to enter nuclei, suggesting an
interaction between the two proteins. Additionally, UL28 copurified with UL15 from HSV-infected cells after ion-exchange and DNA
affinity chromatography, and the complex sedimented as a 1:1
heterodimer upon sucrose gradient centrifugation. These findings
are evidence of a physical interaction of UL15 and UL28 and a
functional role for UL15 in directing UL28 to the nucleus.
*
Corresponding author. Mailing address: Department of
Microbiology and Immunology, Brody Medical Sciences Building, East
Carolina University School of Medicine, 600 Moye Blvd., Greenville, NC 27858-4354. Phone: (252) 816-2706. Fax: (252) 816-3104. E-mail: pederson{at}brody.med.ecu.edu.
Journal of Virology, February 1999, p. 1704-1707, Vol. 73, No. 2
0022-538X/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
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