Structural analysis of small to medium-sized molecules by mass spectrometry after electron-ion fragmentation (ExD) reactions.

Structural analysis of small to medium-sized molecules by mass spectrometry after electron-ion fragmentation (ExD) reactions.
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电子离子断裂 (ExD) 反应后通过质谱法对中小分子进行结构分析。

DOI:
10.1039/c5an02171e
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发表时间:
2016
期刊:
The Analyst
影响因子:
--
通讯作者:
D. Volmer
D. Volmer
中科院分区:
--
文献类型:
--
作者:
Y. Qi;D. Volmer

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电子捕获解离(ECD)是一种利用离子和电子相互作用的串联质谱(MS/MS)方法。其独特的能力,以保持不稳定的债券区别于传统的基于阈值的MS/MS方法,其中最重要的是碰撞诱导解离(CID)。在过去的十年中,ECD在蛋白质分析中开辟了几个新的领域,例如自上而下的测序,翻译后修饰的鉴定和蛋白质-蛋白质相互作用的表征。近年来,出现了许多相关的解离技术,即所谓的ExD技术,特别是电子转移解离(ETD)、电子脱离解离(EDD)、电子诱导解离(EID)和负电子转移解离(NETD),并进一步扩展了离子-电子解离的应用范围。重要的是,ExD技术已应用于蛋白质分析之外,这是本文的重点。这个简短的介绍介绍了ExD的应用,以小和中型分子和审查的重要应用,天然产物,生物医学化合物,合成分子,原油和环境毒素。
Electron capture dissociation (ECD) is a tandem mass spectrometry (MS/MS) method that utilizes the interaction of ions and electrons. Its unique ability to preserve labile bonds distinguishes it from conventional threshold-based MS/MS methods, the most important of which is collision-induced dissociation (CID). During the last decade, ECD has opened up several new venues in protein analyses, for example top-down sequencing, identification of post-translational modifications, and characterization of protein-protein interactions. In recent years, a number of related dissociation techniques, so-called ExD techniques, particularly electron transfer dissociation (ETD), electron detachment dissociation (EDD), electron induced dissociation (EID), and negative electron transfer dissociation (NETD), have emerged and have extended the application range of ion-electron dissociations further. Importantly, ExD techniques have been applied beyond protein analyses, which is the focus of the current paper. This short introduction describes the application of ExD to small and medium-sized molecules and reviews important applications to natural products, biomedical compounds, synthetic molecules, crude oils, and environmental toxins.
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