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Chiral recognition and binding constant determination in monovalent and bivalent systems using electrospray ionization mass spectrometry

机译:使用电喷雾电离质谱法测定一价和二价体系中的手性识别和结合常数

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摘要

Electrospray ionization mass spectrometry (ESI-MS) is a soft ionization method which is capable of transferring weakly bound host-guest noncovalent complexes from the solution phase to the gas phase. This capability makes ESI-MS an ideal tool for the quantification of binding affinities of different host-guest noncovalent complexes.;There is a growing interest in using ESI-MS for chiral recognition studies. In this work ESI-MS was employed to investigate the binding affinities for cinchona alkaloid chiral selectors binding N-blocked leucine enantiomers, as well as for macrocyclic antibiotics binding a variety of derivatized and underivatized amino acids. The effect of multivalency on binding affinity was also evaluated. This ESI-MS method is very promising for the binding studies of different host-guest systems. Merits of this method are speed, sensitivity and low sample consumption.
机译:电喷雾电离质谱法(ESI-MS)是一种软电离方法,能够将弱结合的主体-客体非共价络合物从溶液相转移到气相。这种功能使ESI-MS成为定量不同宿主-客体非共价复合物结合亲和力的理想工具。使用ESI-MS进行手性识别研究的兴趣日益浓厚。在这项工作中,ESI-MS用于研究金鸡纳生物碱手性选择剂与N封闭的亮氨酸对映体的结合亲和力,以及与各种衍生化和衍生化的氨基酸结合的大环抗生素的结合亲和力。还评估了多价对结合亲和力的影响。这种ESI-MS方法对于不同宿主系统的结合研究非常有前途。这种方法的优点是速度快,灵敏度高和样品消耗低。

著录项

  • 作者

    Joshi, Manishkumar D.;

  • 作者单位

    The University of Texas at Arlington.;

  • 授予单位 The University of Texas at Arlington.;
  • 学科 Analytical chemistry.
  • 学位 M.S.
  • 年度 2008
  • 页码 80 p.
  • 总页数 80
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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