Abstract
The HIV-1 diversity in Brazil, where several subtypes such as B, C and F has been ascribing, with a predominance of subtype B. Based on the diversity of the V3 loop of the viral envelope (gp120), a variant of subtype occurs, denominated B -GWGR. In previous results, this Brazilian variant that has the amino acid tryptophan in place of proline, has less pathogenic sequence that normally al…