Pyrrolidine Derivatives as Plasmepsin Inhibitors: Binding Mode Analysis Assisted by Molecular Dynamics Simulations of a Highly Flexible Protein
作者:Torsten Luksch、Andreas Blum、Nina Klee、Wibke E. Diederich、Christoph A. Sotriffer、Gerhard Klebe
DOI:10.1002/cmdc.200900452
日期:——
sufficiently opened to accommodate the 3,4‐bis(aminomethylene)pyrrolidines. Molecular dynamics simulations were performed to analyze the flexibility of the protein in greater detail, leading to a binding mode hypothesis for the 3,4‐bis(aminomethylene)pyrrolidines and providing further insight and general implications for the design of Plm II inhibitors.
纤溶酶II(EC编号:3.4.23.39)和IV(EC编号:3.4.23.B14)是存在于疟原虫恶性疟原虫食物液泡中的天冬氨酸蛋白酶。并参与宿主血红蛋白降解。测试了最初合成为HIV-1蛋白酶抑制剂的一系列吡咯烷衍生物对纤溶酶(Plm)的活性。发现了Plm II和IV同工型的纳摩尔级抑制剂。进行了详细的研究,以鉴定有助于解释潜在的结构-活性关系的推定结合模式。通过使用抑制剂结合的Plm II(PDB ID:1LEE)的晶体结构,生成了吡咯烷3,4-二酯衍生物和取代的3,4-二氨基吡咯烷抑制剂的合理结合模式。建模研究表明,可用的Plm晶体结构的襟翼未充分打开,无法容纳3,4-双(氨基亚甲基)吡咯烷。