Similar but Different: Thermodynamic and Structural Characterization of a Pair of Enantiomers Binding to Acetylcholinesterase
作者:Lotta Berg、Moritz S. Niemiec、Weixing Qian、C. David Andersson、Pernilla Wittung-Stafshede、Fredrik Ekström、Anna Linusson
DOI:10.1002/anie.201205113
日期:2012.12.14
Take a closer look: Unexpectedly, a pair of enantiomeric ligands proved to have similar binding affinities for acetylcholinesterase. Further studies indicated that the enantiomers exhibit different thermodynamic profiles. Analyses of the noncovalent interactions in the protein–ligand complexes revealed that these differences are partly due to nonclassical hydrogen bonds between the ligands and aromatic
仔细观察:出乎意料的是,事实证明,一对对映体配体对乙酰胆碱酯酶具有相似的结合亲和力。进一步的研究表明,对映异构体表现出不同的热力学特性。对蛋白质-配体复合物中非共价相互作用的分析表明,这些差异部分是由于蛋白质的配体和芳香族侧链之间的非经典氢键所致。