Figure 1.

Tat variants from BF recombinant forms obtained from 23 Argentinean patients. Samples are named either as ID/accession number (when they were firstly described by our group) or GenBank accession number only. A. Four distinguishable genetic patterns (named Tat1, Tat2, Tat3 and Tat4) were recognized by boostcaning analysis. Samples showing each recombination pattern are indicated on the right. B. Tat primary structure from Argentinean samples. Several amino acid substitutions are observed when compared to the B subtype prototype sequences. Substitutions are found in every functional domain being the core and basic domains the most conserved.