Collision-induced dissociation for mass spectrometric analysis of biopolymers: high-resolution Fourier transform ion cyclotron resonance MS4.

Collision-induced dissociation for mass spectrometric analysis of biopolymers: high-resolution Fourier transform ion cyclotron resonance MS4.
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用于生物聚合物质谱分析的碰撞诱导解离:高分辨率傅里叶变换离子回旋共振 MS4。

DOI:
10.1021/ac00096a001
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发表时间:
1994
影响因子:
7.4
通讯作者:
Marshall,AG
Marshall,AG
中科院分区:
化学1区
文献类型:
--
作者:
Huang,Y;Pasa-Tolić,L;Guan,S;Marshall,AG

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首次证明了肽离子的高效碰撞诱导解离多级串联高分辨率质谱分析。具体而言,四级傅立叶变换离子回旋共振碰撞诱导解离串联及时 MS4 被证明适用于由基质辅助激光解吸/电离产生的缓激肽准分子离子 MH+。我们将非共振激发和离子轴化相结合,以提高每个 MS 阶段的母离子解离和子离子收集和检测的效率。我们观察到,在第二阶段,C 端连续丢失水/氨,留下 (MHNH3/H20)+ 离子,随后连续丢失接下来的两个氨基酸:精氨酸和苯丙氨酸。在消耗约 10 pmol 肽且仅需约 5 分钟的实验中,所有四个 MS 阶段都实现了高质量分辨能力。我们预计应该可以实现该实验的自动化,以实现生物多聚的高速测序。
Efficient collision-induced dissociation multistage tandem high-resolution mass spectrometry of peptide ions is demonstrated for the first time. Specifically, four-stage Fourier transform ion cyclotron resonance collisioninduced dissociation tandem-in-time MS4 is demonstrated for bradykinin quasimolecularions, MH+, produced by matrix-assisted laser desorption/ionization. We combine off-resonant excitation and ion axialization to improve the efficiency of parent ion dissociation and product ion collection and detection at everyMS stage. We observe successive loss of water/ammonia from the C-terminus to leave an (MHNH3/H20)+ ion in the second stage, followed by successive losses of the next two amino acids, arginine and phenylalanine. High mass resolving power is achieved throughout allfour MS stages, in an experiment that consumes~ 10 pmol of peptide and takes only~ 5 min. We project that it should be possible to automate this experiment for high-speed sequencing of biopoly-
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发表时间: 1991
影响因子: 7.4
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发表时间: 1985
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