Figure 2.

Binding register of the test peptide. Peptide binding curves (left panel) and relative binding affinity (right panel) for arginine substituted versions of the Influenza B 116-128 hemaglutinin peptide are shown. The binding curves indicate europium counts (residual reference peptide) versus test peptide concentration. Relative binding affinity (RBA) values were calculated as the IC₅₀ value of the substituted peptide divided by the IC₅₀ value of the un-substituted peptide.