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Journal of Virology, January 2000, p. 584-590, Vol. 74, No. 1
New England Regional Primate Research Center,
Harvard Medical School, Department of Microbiology and Molecular
Genetics, Southborough, MA 01772-9102
Received 13 July 1999/Accepted 24 September 1999
All members of the Herpesviridae family contain
sequences for a highly conserved glycoprotein B (gB) gene. We
investigated the phylogenetic relationships of gB sequences from eight
independent rhadinovirus isolates obtained from three species: rhesus
(Macaca mulatta), cynomologus (Macaca
fasicularis), and pig-tailed (Macaca nemestrina)
macaques. Samples were derived from monkeys housed at four separate
facilities. Analysis of these eight independent gB sequences revealed
five regions of heterogeneity within the 823- to 829-amino-acid
polypeptides: residues 1 to 65, 120 to 185, 255 to 300, 352 to 393, and
412 to 457. The remaining regions of gB were highly conserved among the
different macaque isolates. Overall divergence among these gene
sequences ranged from 0.1 to 7.2% at the amino acid level.
Phylogenetic trees constructed with our macaque rhadinovirus gB
sequences and those derived from additional subfamilies or genera
(alpha, beta, gamma-1, and gamma-2) revealed that the macaque gB
sequences branched with other gamma-2 herpesvirus gB sequences and that
within the gamma-2 genera, the macaque gB sequences clustered as a
distinct branch. The eight macaque rhadinovirus gB sequences were all
approximately equidistant from Kaposi sarcoma-associated herpesvirus
(KSHV) gB sequences and had a shorter evolutionary distance to KSHV gB
sequences than to any other herpesvirus, including the gamma-2
herpesvirus saimiri (HVS) of New World squirrel monkeys. The macaque gB
sequences did not cluster according to the facility of origin, but did
cluster according to the species of origin, displaying less
intraspecies divergence (0.1 to 2.9%) than interspecies divergence
(3.3 to 7.2%). These results demonstrate a close relatedness of
rhadinovirus isolates from different macaque species.
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Copyright © 2000, American Society for Microbiology. All rights reserved.
Species Specificity of Macaque Rhadinovirus Glycoprotein
B Sequences
*
Corresponding author. Mailing address: New England
Regional Primate Research Center, Harvard Medical School, Department of Microbiology and Molecular Genetics, 1 Pine Hill Dr., Box 9102, Southborough, MA 01772-9102. Phone: (508) 624-8042. Fax: (508) 624-8190. E-mail: loualex{at}world.STD.com.
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