High-pH reversed-phase chromatography with fraction concatenation for 2D proteomic analysis.

High-pH reversed-phase chromatography with fraction concatenation for 2D proteomic analysis.
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DOI:
10.1586/epr.12.15
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发表时间:
2012-04
影响因子:
3.4
通讯作者:
Smith RD
Smith RD
中科院分区:
生物学3区
文献类型:
--
作者:
Yang F;Shen Y;Camp DG 2nd;Smith RD

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正交高分辨率分离对于在蛋白质组测量中获得改进的分析动态范围和蛋白质覆盖率至关重要。与用于二维蛋白质组分析的传统强阳离子交换 (SCX) 色谱相比,高 pH 反相液相色谱 (RPLC) 和级分串联可提供更好的肽分析。例如,在消化的人类蛋白质样品的鸟枪蛋白质组学分析中,串联高 pH 反相液相色谱提高了肽(1.8 倍)和蛋白质(1.6 倍)的鉴定。具有级分串联的高 pH RPLC 的其他优点包括提高蛋白质序列覆盖率、简化样品处理和减少样品损失,使其成为 SCX 色谱法与二维低 pH RPLC 结合用于二维蛋白质组学分析的有吸引力的替代品。
Orthogonal high-resolution separations are critical for attaining improved analytical dynamic range and protein coverage in proteomic measurements. High pH reversed-phase liquid chromatography (RPLC) followed by fraction concatenation affords better peptide analysis than conventional strong-cation exchange (SCX) chromatography applied for the two-dimensional proteomic analysis. For example, concatenated high pH reversed-phase liquid chromatography increased identification for peptides (1.8-fold) and proteins (1.6-fold) in shotgun proteomics analyses of a digested human protein sample. Additional advantages of high pH RPLC with fraction concatenation include improved protein sequence coverage, simplified sample processing, and reduced sample losses, making this an attractive alternative to SCX chromatography in conjunction with the second dimension low pH RPLC for two-dimensional proteomics analyses.
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