Rapid high mass resolution mass spectrometry using matrix-assisted ionization.

Rapid high mass resolution mass spectrometry using matrix-assisted ionization.
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使用基质辅助电离进行快速高质量分辨率质谱分析。

DOI:
10.1016/j.ymeth.2016.01.019
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发表时间:
2016
期刊:
Methods (San Diego, Calif.)
影响因子:
--
通讯作者:
Stemmer,PaulM
Stemmer,PaulM
中科院分区:
--
文献类型:
--
作者:
Trimpin,Sarah;Thawoos,Shameemah;Foley,CaseyD;Woodall,DanielW;Li,Jing;Inutan,EllenD;Stemmer,PaulM

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基质辅助电离(MAI)被证明是一种稳健和灵敏的分析方法,能够分析蛋白质,如霍乱毒素B亚基和百日咳毒素突变体,从含有相对高含量的无机盐,缓冲液和防腐剂的条件下,而不需要事先样品净化或浓缩。通过规避一些样品制备步骤,MAI简化并加速了复杂介质中生物样品的分析工作流程。电喷雾电离(ESI)的多电荷离子特性和基质辅助激光解吸/电离(MALDI)的稳健性的益处可以从单个方法获得,使得其非常适合于以超高分辨率分析蛋白质和其他生物分子,如在Orbitrap Fusion上所证明的,其中蛋白质亚基被解析,而MALDI飞行时间失败。MAI结果与ESI,MALDI,和laserspray电离方法和基本的共性进行了比较。
Matrix-assisted ionization (MAI) is demonstrated to be a robust and sensitive analytical method capable of analyzing proteins such as cholera toxin B-subunit and pertussis toxin mutant from conditions containing relatively high amounts of inorganic salts, buffers, and preservatives without the need for prior sample clean-up or concentration. By circumventing some of the sample preparation steps, MAI simplifies and accelerates the analytical workflow for biological samples in complex media. The benefits of multiply charged ions characteristic of electrospray ionization (ESI) and the robustness of matrix-assisted laser desorption/ionization (MALDI) can be obtained from a single method, making it well suited for analysis of proteins and other biomolecules at ultra-high resolution as demonstrated on an Orbitrap Fusion where protein subunits were resolved for which MALDI-time-of-flight failed. MAI results are compared with those obtained with ESI, MALDI, and laserspray ionization methods and fundamental commonalities discussed.
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