Design and Elucidation of a Strain-Relief-Driven Ring Opening Mechanism of Inactivation of Ornithine Aminotransferase by (1S,3R,5R)-3-Amino-6,6-difluorobicyclo[3.1.0]hexane-1-carboxylic Acid.
Structural and mechanistic studies validated the proposed mechanism of 5, which undergoes a ring-opening mechanism to form a PLP-inactivator adduct that is tightly bound in the active site of hOAT, the first report of a ring-opening event in the active site of hOAT.