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J. Virol., 10 1995, 6577-6580, Vol 69, No. 10
G Pengue, A Caputo, C Rossi, G Barbanti-Brodano and L Lania
The evolutionarily conserved protein domain, called the Kruppel- associated
box (KRAB), present in the amino termini of a large number of Kruppel-type
zinc finger proteins is a strong repressor domain. In order to develop
novel strategies to control human immunodeficiency virus type 1 (HIV-1)
gene expression, we constructed a series of expression vectors expressing
the wild-type Tat or Tat transdominant negative mutants fused to the KRAB
repressor domain. We found that the KRAB domain tethered to the
transactivating response element is able to suppress both basal and
Tat-mediated activity of HIV-1 long terminal repeat-driven gene expression.
These results suggest that the KRAB repressor domain fused to the Tat
transdominant negative mutants can be successfully employed to control
HIV-1 gene expression.
Copyright © 1995, American Society for Microbiology
Transcriptional silencing of human immunodeficiency virus type 1 long terminal repeat-driven gene expression by the Kruppel-associated box repressor domain targeted to the transactivating response element
Department of Genetics, Molecular and General Biology, University of Naples, Federico II, Italy.
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