https://www.selleckchem.com/btk.html
In one mutant, addition of the native ligand mannose parasterically improves the mutant's affinity for Penta-His 4-fold, even as their epitopes overlap. In another mutant, the allosteric antibody mab21 reduces the mutant's affinity for Penta-His 7-fold. The advantage of noncompetitive regulation is further illustrated by the ability of this allosteric regulator to induce 98% detachment of Penta-His, even with modest differences in affinity. This illustrates the potential of FimH, with its deeply studied conformation-dependent binding, as a scaffold
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