| abstract |
This invention features polypeptides, variants thereof, and fragments thereof useful in eliciting an immune response (e.g., neutralizing antibodies) against a broad spectrum of HIV-1 isolates. The polypeptides, variants, and fragments include a portion of the gp120 V2 domain of HIV-1. The polypeptides, variants, and fragments display an epitope that is recognized by at least one antibody which neutralizes at least one HIV-1 primary isolate. This invention also features nucleic acid sequences encoding those polypeptides. In addition, the invention provides methods of screening for inhibitors of HIV-1 entry into cells, as well as methods of treatment using the inhibitors. |