proviral HIV-1 clone with an inserted TAATGA double stop codon in the endodomain of gp41 after position 8368 (NL4-3); (a stop codon at analogous position have been reported in early reports of SIV propagation in vitro.)
Deletion mutant of HIV-1 with a deleted env gene; RRE reintroduced for the expression of HIV-1 Gag. The genes vpr, env, tat, rev, vpu, nef are not expressed.
Mutant of HIV-1 with deletions between SphI and SalI of pNL4-3, resulting in a frameshift in the gag gene; TAG stop codon inserted in gp41, truncating the endodomain