Encounter with Unexpected Collagenase-1 Selective Inhibitor: Switchover of Inhibitor Binding Pocket Induced by Fluorine Atom

Phosphonamide-based inhibitors having trifluoromethyl moiety showed highly selective inhibition against MMP-1. A possible mechanism of the selectivity of MMP-1 inhibitors through the switchover of the binding pocket was speculated by computational calculations. As a consequence of the unexpected selectivity, the specific interaction of CF3 group of the inhibitor and Arg214 in the S1′ pocket of MMP-1 conducted a low binding energy.