Target Template Length Identity (%) Score E-value Gaps Method Anti-HER2 antibody-IgG1 heavy chain 1hzhH 457 83 575 1e-165 1% Composition-based stats Anti-HER2 antibody-kappa light chain 1za6A 220 88 280 1e-76 - Composition-based stats B7.1-IgG1 heavy chain 1hzhH 457 77 384 1e-107 4% Composition-based stats B7.1-kappa light chain 1y0lA 216 60 175 5e-45 2% Composition-based stats

Table 5: Protein 3D Structure Prediction Using (PS)2 Server: Prediction of the tertiary protein structures was performed by using automated homology modeling (PS)2 Server. The Server revealed the most conserved homologies.