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Journal of Virology, June 2000, p. 5385-5387, Vol. 74, No. 11
Laboratory of Molecular Microbiology,
National Institute of Allergy and Infectious Diseases, Bethesda,
Maryland
Received 12 January 2000/Accepted 15 March 2000
The nr allele at the mouse Fv1 restriction
locus governs resistance to B-tropic and some N-tropic murine leukemia
viruses (MLVs). Sequence analysis and site-specific mutagenesis of
N-tropic MLVs identified a single amino acid difference responsible for this restriction that is distinct from the site that governs N or B
tropism. Viruses with other substitutions at this site were evaluated
for altered replication patterns.
0022-538X/00/$04.00+0
A Single Amino Acid Change in the Murine Leukemia
Virus Capsid Gene Responsible for the
Fv1nr Phenotype
*
Corresponding author. Mailing address: Laboratory of
Molecular Microbiology, National Institute of Allergy and Infectious Diseases, Building 4, Room 329, Bethesda, MD 20892-0460. Phone: (301)
496-0972. Fax: (301) 480-2808. E-mail: ckozak{at}nih.gov.
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