Analyzing dissociation kinetics of IgG from protein A using MP-SPR and PureKinetics™

Application Note #147

The PureKinetics™ sensogram shows the true binding response without bulk artifacts. Using the PureKinetics™ feature, the IgG dissociation in changing buffers could be quantified.

IgG dissociation kinetics from immobilized Protein A was studied using real-time Multi-Parametric Surface Plasmon Resonance (MP-SPR). Various dissociation buffers were tested to determine the most efficient solution. A unique feature, PureKinetics™, allows differentiation of real binding from interfering bulk signal artifacts, providing a pure binding signal. The method can clear out even extremely large bulk signals, such as high-ionic strength dissociation buffers. In this study, the most efficient dissociation from Protein A was achieved with buffers of pH below 4.0.

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