首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Antibiotic Binding to Dizinc beta-Lactamase L1 from Stenotrophomonas maltophilia: SCC-DFTB/CHARMM and DFT Studies
【24h】

Antibiotic Binding to Dizinc beta-Lactamase L1 from Stenotrophomonas maltophilia: SCC-DFTB/CHARMM and DFT Studies

机译:嗜麦芽窄食单胞菌对Dizincβ-内酰胺酶L1的抗生素结合:SCC-DFTB / CHARMM和DFT研究

获取原文
获取原文并翻译 | 示例
           

摘要

A dizinc beta-lactamase (L1 from Stenotrophomonas maltophilia) complexed with an antibiotic compound (moxalactam) has been studied using a hybrid quantum mechanical/molecular mechanical (QM/MM) approach. The QM region is described by the self-consistent charge-density functional tight binding (SCC-DFTB) model while the MM by CHARMM. The Michaelis complex, which is constructed from a recent X-ray structure of the L1 enzyme with the hydrolyzed moxalactam, is simulated by molecular dynamics. The simulation yields valuable insights into substrate-enzyme interaction, whose implications in the enzyme catalysis are discussed. Finally, the QM/MM results are compared with a high-level density functional theory study of a truncated active-site model and the agreement provides strong support for the SCC-DFTB treatment of the QM region.
机译:已使用混合量子力学/分子机械(QM / MM)方法研究了与抗生素化合物(莫拉西坦)复合的二锌β-内酰胺酶(来自嗜麦芽单胞菌的L1)。 QM区域由自洽电荷密度功能紧密绑定(SCC-DFTB)模型描述,而MM由CHARMM描述。通过分子动力学模拟由最近的L1酶的X射线结构和水解的内酰胺组成的Michaelis配合物。该模拟产生了对底物-酶相互作用的有价值的见解,并讨论了其在酶催化中的意义。最后,将QM / MM结果与截短的活动位点模型的高级密度泛函理论研究进行了比较,该协议为QM地区的SCC-DFTB处理提供了有力的支持。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号