Drug-Ligand Binding Kinetics

Drug-ligand binding kinetics characterise association and dissociation rates determining pharmacological onset and offset. Association rate constants determine binding speed. Dissociation rate constants characterise duration of action. Affinity equilibrium constants reflect binding strength. Target saturation kinetics determine receptor occupancy duration.

Structure-activity relationship analysis correlates chemical modifications with binding changes. Biophysical techniques including surface plasmon resonance measure kinetics directly. Pharmacodynamic modelling quantitates occupancy-response relationships. Regulatory submissions incorporate binding kinetics supporting mechanism-of-action. Emerging technologies enable real-time binding monitoring.