Stereoselectivity by Enantiomeric Inhibitors of Matrix Metalloproteinase-8: New Insights from Molecular Dynamics Simulations

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• 作者：Massimiliano Aschi ; Neva Besker ; Nazzareno Re ; Giorgio Pochetti ; Cecilia Coletti ; Carlo Gallina ; Fernando Mazza
• 刊名：Journal of Medicinal Chemistry
• 出版年：2007
• 出版时间：January 25, 2007
• 年：2007
• 卷：50
• 期：2
• 页码：211 - 218
• 全文大小：367K
• 年卷期：v.50,no.2(January 25, 2007)
• ISSN：1520-4804

文摘

Molecular Dynamics simulations in aqueous solution were performed for the matrix metalloproteinase-8(MMP-8) free catalytic domain and for its complexes with the (R)- and (S)-[1-(4'-methoxybiphenyl-4-sulfonylamino)-2-methylpropyl] phosphonate. The 144-155 loop of the enzyme undergoes a drastic decreaseof mobility once complexed with both enantiomers. The two enantiomers induce a different decrease ofconformational entropy upon complexation. The higher affinity of the R-enantiomer can be related to thelower loss of conformational entropy accompanying its binding. The differences in the dynamical behaviorof the protein induced by the two enantiomers are discussed at molecular level and the mode of binding ofthe simulated complexes is compared with that previously determined by X-ray crystallography.