全质量范围 ΦSDM轨道飞行质量谱仪用于DIA蛋白质组分析
Sophia Steigerwald1, Ankit Sinha1, Kyle L Fort2
1Department Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Martinsried, Germany.
Molecular & cellular proteomics : MCP
|January 6, 2024
概括
阶段受限光谱解卷法 (ΦSDM) 提高了轨道仪质谱数据的质量. 这种先进的信号处理提高了的量化和识别速度,特别是在快速蛋白质组学分析中.
科学领域:
- 蛋白质组学是指蛋白质组学.
- 质谱测量质量谱测量
- 分析化学 分析化学
背景情况:
- 在蛋白质组学中优化数据独立获取平衡了光谱分辨率和速度.
- 轨道飞行器质谱是定量蛋白质组学的关键技术.
研究的目的:
- 实施和评估一个实时的全质量范围阶段受约束的光谱解卷法 (ΦSDM) 轨道仪质谱学.
- 评估 ΦSDM 对光谱分辨率,获取速度和蛋白质组学定量准确性的影响.
主要方法:
- 实时全质量范围实现 ΦSDM 在 Orbitrap 质量谱仪上.
- 将FSDM与增强的里埃转换 (EFT) 信号处理进行比较.
- 使用HeLa消化样本,将FSDM应用于不同的色谱渐变长度 (21,12,5分钟).
主要成果:
- ΦSDM增加了质量解析功率,但没有增加扫描时间.
- ΦSDM在2小时的分析中提高了16%的量化.
- 与EFT相比,FSDM在5分钟梯度中显著提高了蛋白质组和的识别率 (>15%) .
结论:
- ΦSDM 是一个可行的替代信号处理算法用于 Orbitrap 数据.
- ΦSDM提高了蛋白质组学中的光谱质量和定量准确性.
- 对于快速色谱梯度和高密度区域,φSDM特别有利.
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