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Journal of Virology, March 2003, p. 3339-3344, Vol. 77, No. 5
0022-538X/03/$08.00+0     DOI: 10.1128/JVI.77.5.3339-3344.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

Defects in Virion Production Caused by Mutations Affecting the C-Terminal Portion of the Moloney Murine Leukemia Virus Capsid Protein

Margaret Q. Wang1 and Stephen P. Goff1,2*

Department of Microbiology,1 Department of Biochemistry and Molecular Biophysics, Howard Hughes Medical Institute, College of Physicians and Surgeons, Columbia University, New York, New York 100322

Received 24 June 2002/ Accepted 3 December 2002

The capsid (CA) domain of the Moloney murine leukemia virus (Mo-MuLV) Gag protein has a unique carboxy terminus with a highly charged arginine-rich sequence. Mutant viruses harboring arginine-to-alanine mutations affecting this region of CA displayed significant defects in virion release, and the few viral particles produced were noninfectious. The interaction between the mutant Gag precursors was affected, as judged by the yeast two-hybrid assay. The results suggest that the unique carboxy terminus of CA in the Mo-MuLV plays an important role in Gag-Gag association during virion production.

* Corresponding author. Mailing address: Department of Biochemistry and Molecular Biophysics, College of Physicians and Surgeons, Columbia University, HHSC 1310c, 701 W. 168th St., New York, NY 10032. Phone: (212) 305-3794. Fax: (212) 305-8692. E-mail: goff{at}cancercenter.columbia.edu.

Journal of Virology, March 2003, p. 3339-3344, Vol. 77, No. 5
0022-538X/03/$08.00+0     DOI: 10.1128/JVI.77.5.3339-3344.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.



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