Repeated bead assay with A20, A35, A50, S20 in order to verify Western blot results for A20, A35:
General setup = 40 pmol adaptamer + 200 uL streptavidin beads + 160 pmol thrombin + usual antibodies
A3: Adaptamer = A20. Intensity = 3789.42
A5: Adaptamer = A35 Intensity = 3030.94
A7: Adaptamer = A50 Intensity = 1794.28
A9: Negative control: adaptamer replaced with S20. Intensity = 1810.97
A20 and A35 were confirmed to exhibit thrombin-targeting function. Adaptamer A50 performed no better than control setup including S20. S20 appeared to have nonspecific thrombin-binding ability.