Figure 6.
SPR sensorgrams for binding between peptides and hCG protein. The resonance angle shifts depended on (A) the carboxyl-GO chip with standard solutions of hCG concentrations alone, and (B) hCG mixed with BSA and HAS (20 nM each), respectively. (C) Characterization of peptide selectivity using both the single hCG protein and mixed protein experiments. (D) ka and kd values were obtained at different hCG protein concentrations by both kinetic and steady state fits.
Abbreviations: SPR, surface plasmon resonance; hCG, human chorionic gonadotropin; GO, graphene oxide; ka, association rate constant; kd, dissociation rate constant.