Quantitative Analysis of Diubiquitin Isomers Using Ion Mobility Mass Spectrometry.

Quantitative Analysis of Diubiquitin Isomers Using Ion Mobility Mass Spectrometry.
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使用离子淌度质谱法定量分析双泛素异构体。

DOI:
10.1021/jasms.3c00016
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发表时间:
2023
影响因子:
3.2
通讯作者:
Strieter,EricR
Strieter,EricR
中科院分区:
化学3区
文献类型:
--
作者:
Shestoperova,ElizavetaI;Ivanov,DaniilG;Strieter,EricR

文献摘要

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泛素修饰的多样性要求更好地表征泛素链连接、长度和形态的方法。在这里,我们使用多元线性回归分析结合离子迁移质谱仪(IM-MS)来定量不同泛素二聚体异构体的相对丰度。我们通过量化复杂混合物中不同泛素二聚体的相对丰度,并将结果与标准的自下而上的泛素水方法进行比较,证明了该方法的实用性和稳健性。我们的结果为使用多元线性回归分析和IM-MS来表征更复杂的泛素链结构提供了基础。
The diversity of ubiquitin modifications calls for methods to better characterize ubiquitin chain linkage, length, and morphology. Here, we use multiple linear regression analysis coupled with ion mobility mass spectrometry (IM-MS) to quantify the relative abundance of different ubiquitin dimer isomers. We demonstrate the utility and robustness of this approach by quantifying the relative abundance of different ubiquitin dimers in complex mixtures and comparing the results to the standard, bottom-up ubiquitin AQUA method. Our results provide a foundation for using multiple linear regression analysis and IM-MS to characterize more complex ubiquitin chain architectures.