Proteolytic 18O-labeling strategies for quantitative proteomics.

作者: Masaru Miyagi , K.C. Sekhar Rao

DOI: 10.1002/MAS.20116

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摘要: A number of proteomic techniques have been developed to quantify proteins in biological systems. This review focuses on the quantitative technique known as “proteolytic 18O-labeling.” utilizes a protease and H218O produce labeled peptides, with subsequent chromatographic mass spectrometric analysis identify (relative) from which peptides originated. The determines ratio individual protein's expression level between two samples relative each other, can be used quantitatively examine protein (comparative proteomics) post-translational modifications, study protein–protein interactions. present discusses various aspects 18O-labeling technique, including: its history, advantages disadvantages proteolytic compared other techniques, enzymatic considerations, problem variable incorporation 18O atoms into discussion recent advancements overcome it, computational tools interpret data, applications. © 2006 Wiley Periodicals, Inc., Mass Spec Rev 26:121–136, 2007

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