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Integration of 18O Labeling and Solution Isoelectric Focusing in a Shotgun Analysis of Mitochondrial Proteins

机译:O弹枪分析线粒体蛋白中18O标记和溶液等电聚焦的集成

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摘要

Forward and reverse 18O labeling are integrated with solution isoelectric focusing and capillary LC-tandem mass spectrometry to evaluate a new strategy for quantitative proteomics, and to study abundance changes in mitochondrial proteins associated with drug resistance in MCF-7 human cancer cells. Galectin-3 binding protein, which is involved in apoptosis, was detected only in the resistant cell line, as a result of reverse labeling. Among 278 proteins identified, twelve were detected with abundances altered at least 2-fold.
机译:正向和反向 18 O标记与溶液等电聚焦和毛细管LC串联质谱相结合,以评估定量蛋白质组学的新策略,并研究线粒体蛋白的丰度变化与MCF- 7种人类癌细胞。由于反向标记,仅在抗性细胞系中检测到参与凋亡的半乳凝素3结合蛋白。在鉴定的278种蛋白质中,检测到十二种,其丰度至少改变了2倍。

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