IC50 values and calculated dissociation constants, KD (μM) for the complexes between McinOBP1-wt and different ligands at pH = 7.4.

Ligands concentrations that exceeded 50 μM for half-maximal inhibition are represented as ‘−’ and were not used for calculating Dissociation constants Ki are marked as ‘−’.IC50, ligand concentration displacing 50% of the fluorescence intensity of the McinOBP1/N-phenyl-1-naphthylamine complex; CAS, Chemical Abstracts Service;; KD, dissociation constant.