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Predicting Enzyme–Substrate Specificity with QM/MM Methods: A Case Study of the Stereospecificity of d‑Glucarate Dehydratase

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The stereospecificity of d-glucarate dehydratase (GlucD) is explored by QM/MM calculations. Both the substrate binding and the chemical steps of GlucD contribute to substrate specificity. Although the identification of transition states remains computationally intensive, we suggest that QM/MM computations on ground states or intermediates can capture aspects of specificity that cannot be obtained using docking or molecular mechanics methods.

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