Two distinct infectious molecular clones of human immunodeficiency type 2 (HIV-2) were analyzed for their biological properties in six cell lines. Fourteen chimeric and ten mutant viruses were constructed from these two viral genomes to localize the genetic determinants responsible for the phenotypes. Growth property of the viruses in the cell lines, together with the biochemical data, showed that a major determinant for the viral tropism resides in the env gene. In addition, in some cell lines, the accessory genes vif and nef affected the efficiency of virus replication. Thus, like HIV-1, mutations in the auxiliary and env genes of HIV-2 contributed much to the differences in virological characteristics.
Archives of Virology – Springer Journals
Published: Mar 1, 1998
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