Quantitative Analysis of Diubiquitin Isomers Using Ion Mobility Mass Spectrometry.
Quantitative Analysis of Diubiquitin Isomers Using Ion Mobility Mass Spectrometry.
复制标题
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
中科院分区:
文献类型:
--
作者:
Shestoperova,ElizavetaI;Ivanov,DaniilG;Strieter,EricR
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.