首页> 外文期刊>Journal of mass spectrometry: JMS >Gas-phase peptide fragmentation: how understanding the fundamentals provides a springboard to developing new chemistry and novel proteomic tools
【24h】

Gas-phase peptide fragmentation: how understanding the fundamentals provides a springboard to developing new chemistry and novel proteomic tools

机译:气相肽片段化:如何理解基本原理为开发新化学方法和新型蛋白质组学工具提供了跳板

获取原文
获取原文并翻译 | 示例
           

摘要

This tutorial provides an overview of the evolution of some of the key concepts in the gas-phase fragmentation of different classes of peptide ions under various conditions [e.g. collision-induced dissociation (CID) and electron transfer dissociation (ETD)], and then demonstrates how these concepts can be used to develop new methods. For example, an understanding of the role of the mobile proton and neighboring group interactions in the fragmentation reactions of protortated peptides has led to the design of the 'SELECT' method. For ETD, a model based on the Landau-Zener theory reveals the role of both thermodynamic and geometric effects in the electron transfer from polyatomic reagent anions to multiply protonated peptides, and this predictive model has facilitiated the design of a new strategy to form ETD reagent anions from precursors generated via ESI. Finally, two promising, emerging areas of gas-phase ion chemistry of peptides are also described: (1) the design of new gas-phase radical chemistry to probe peptide structure, and (2) selective cleavage of disulfide bonds of peptides in the gas phase via various physicochemical approaches.
机译:本教程概述了在各种条件下不同类别的肽离子在气相裂解过程中一些关键概念的演变[例如,碰撞诱导解离(CID)和电子转移解离(ETD)],然后演示如何将这些概念用于开发新方法。例如,对可移动质子和邻近基团相互作用在质子化肽片段化反应中的作用的理解导致了“选择”方法的设计。对于ETD,基于Landau-Zener理论的模型揭示了热力学和几何效应在电子从多原子试剂阴离子到质子化肽的转移中的作用,并且该预测模型促进了形成ETD试剂的新策略的设计。通过ESI生成的前体生成的阴离子。最后,还描述了肽的气相离子化学的两个有前途的新兴领域:(1)设计新的气相自由基化学以探测肽的结构,以及(2)气相中肽的二硫键的选择性裂解通过各种物理化学方法

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