Figure 3: Three-dimensional models for the HLA-B, HLA-A and HLA-DPβ1 proteins.

Three-dimensional models for the (a) HLA-B, (b) HLA-A and (c) HLA-DPB1 proteins. These structures are based on Protein Data Bank entries 3LV3, 3UTQ and 3LQZ, respectively, with a direct view to the peptide-binding groove.