| CA1 clade A1 env gp120 DNA prime (AR): | CTRPNNNTRKGIHIGPGRAIYATGDIIGDIRQAHC |
| 92BR025.9 clade C env gp120 DNA prime (CQ): | CTRPNNNTRKSIRIGPGQAFYATGEIIGDIRQAHC |
| V3A-FP derived from clade A strain 92UG037.08: | CTRPNNNTRKSVRIGPGQTFYATGDIIGDIRQAHC |
| V3B–FP derived from clade B strain JR-CSF: | CTRPSNNTRKSIHIGPGRAFYTTGEIIGDIRQAHC |
| V3C-FP derived from clade C strain 93IN904: | CTRPNNNTRKSIRIGPGQTFYATGDIIGDIRQAHC |