Figure 2.
Representative SPR sensorgram for avidin binding on and elution from the AECPBA surface. The binding experiment was performed with 20 μL of 5.16 × 10−6 M avidin in pH 9.00 glycine-buffered saline (0.050 M glycine, 0.15 M NaCl) at a flowrate of 2 μL min−1, while the elution (regeneration) experiment was performed with 65 μL of pH 10.00 borate-buffered saline (0.10 M borate, 0.30 M NaCl) at a flowrate of 10 μL min−1. The flowrate during the buffer run was kept at 2 μL min−1. The AECPBA surface was prepared through direct EDC coupling.