Fig. 1. ProteoChip-based protein-protein interaction between integrin avb3 and OPN. (A) Schematic diagram of integrin avb3-OPN assay on ProteoChip. Integrin avb3 was arrayed on
ProteoChip and subsequently incubated with Cy5-labeled OPN. (B) Dose-dependent interactions of integrin avb3-OPN on ProteoChip. The fluorescence intensities of the chip were
measured using a fluorescence scanner. (C) Inhibitory effects of IPS-02001 on integrin avb3-OPN. Binding of integrin avb3 to OPN was perturbed by IPS-02001. IC50 values were
calculated by SigmaPlot. (D) Snapshot of the docked structure between integrin avb3 and IPS-02001 rendered with a space-filling model, after settling on the protein interface.