Abstract
Our previous results have demonstrated that T-cell lines and primary T lymphocytes transduced with a Tat-dependent HIV-based lentiviral vectors expressing the mutant isoform of the vif gene, F12-vif, are protected from HIV-1 infection. F12-Vif is a 192-aa natural variant polypeptide owing 14 unique amino acid substitutions. The substitutions are randomly scattered along the entire sequence with the exception of a 5-aa cluster located at positions 127, 128, and 130–132. None of the 14 aa substitutions is present in the SOCS box that recruits the E3 ubiquitin ligase responsible of APOBEC3G (AP3G) degradation during HIV infection.
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