Figure 2. OLP-147 and 149 represent clade A1-specific epitopes.

These OLPs associate with HLA-B*57 expression (Table 2) and with the anchor residues that have been defined for the HLA-B*57 binding motif a). Alignments of the optimal epitope within OLP-149 demonstrate that in other clades, this epitope would not likely be presented by HLA-B*57 b).