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Investigating the Effects of Ionic Liquids on Biomolecules with Classical Molecular Dynamics and a Novel Coarse-graining Method

机译:用经典分子动力学和新的粗粒度方法研究离子液体对生物分子的影响

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摘要

Ionic liquids have been utilized in a wide range of biomolecular applications. Although these advancements are significant, the full utility of ionic liquids is restricted by our limited understanding of the molecular level interactions between ionic liquids and biomolecules. This study utilizes molecular dynamics simulations to understand the effects of the deep eutectic solvent CAGE on model phospholipid bilayers, and the effects of the ionic liquid, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C4mpy][Tf2N]), on the conformation of dipeptides containing proline. These simulations have shown that the effects of CAGE on phospholipid bilayers are dependent upon the type of phospholipid, and that 1-palmitoyl-2-oleoyl-sn-glycero -3-phosphoethanolamine (POPE) bilayers are disrupted more severely than 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) bilayers. The IL [C4mpy][Tf2N] generally restricts the conformational sampling of the dipeptides and causes isomerization to the cis state for Trp-Pro. This study also explores a novel coarse graining method, to expedite computational studies of ionic liquids and further our understanding of the specificity of ionic liquid-biomolecule interactions.
机译:离子液体已被广泛用于生物分子应用中。尽管这些进步意义重大,但由于我们对离子液体与生物分子之间的分子水平相互作用的了解有限,离子液体的全部用途受到了限制。这项研究利用分子动力学模拟来了解深共熔溶剂CAGE对模型磷脂双层的影响,以及离子液体1-丁基-3-甲基咪唑双(三氟甲基磺酰基)酰亚胺([C4mpy] [Tf2N])的影响,含有脯氨酸的二肽的构象。这些模拟表明,CAGE对磷脂双层的影响取决于磷脂的类型,并且1-棕榈酰基-2-油酰基-sn-甘油-3-磷酸乙醇胺(POPE)双层的破坏要比1-棕榈酰基-双层严重得多。 2-油酰基-sn-甘油-3-磷酸胆碱(POPC)双层。 IL [C4mpy] [Tf2N]通常会限制二肽的构象采样,并导致Trp-Pro异构化为顺式。这项研究还探索了一种新颖的粗粒化方法,以加快离子液体的计算研究,并进一步使我们了解离子液体与生物分子相互作用的特异性。

著录项

  • 作者

    Heyert, Alexanndra J.;

  • 作者单位

    Northern Arizona University.;

  • 授予单位 Northern Arizona University.;
  • 学科 Physical chemistry.
  • 学位 M.S.
  • 年度 2018
  • 页码 108 p.
  • 总页数 108
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 新闻学、新闻事业;
  • 关键词

  • 入库时间 2022-08-17 11:40:07

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