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MS1-level proteome quantification platform allowing maximally increased multiplexity for SILAC and in vitro chemical labeling

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Title
MS1-level proteome quantification platform allowing maximally increased multiplexity for SILAC and in vitro chemical labeling
Author(s)
Yeon Choi; Kyowon Jeong; Sanghee Shin; Lee, Joon Won; Young-suk Lee; Kim, Sangtae; Sun Ah Kim; Jung, Jaehun; Kim, Kwang Pyo; V. Narry Kim; Jong-Seo Kim
Subject
AMINO-ACIDS, ; ISOTOPE, ; CHROMATOGRAPHY, ; DIMETHYLATION, ; QUANTITATION, ; CELL, ; EXPRESSION, ; DEUTERIUM, ; STRATEGY, ; IMPACT
Publication Date
2020-04
Journal
ANALYTICAL CHEMISTRY, v.92, no.7, pp.4980 - 4989
Publisher
AMER CHEMICAL SOC
Abstract
© 2020 American Chemical Society. Quantitative proteomic platforms based on precursor intensity in mass spectrometry (MS1-level) uniquely support in vivo metabolic labeling with superior quantification accuracy but suffer from limited multiplexity (≤3-plex) and frequent missing quantities. Here we present a new MS1-level quantification platform that allows maximal multiplexing with high quantification accuracy and precision for the given labeling scheme. The platform currently comprises 6-plex in vivo SILAC or in vitro diethylation labeling with a dedicated algorithm and is also expandable to higher multiplexity (e.g., nine-plex for SILAC). For complex samples with broad dynamic ranges such as total cell lysates, our platform performs highly accurately and free of missing quantities. Furthermore, we successfully applied our method to measure protein synthesis rate under heat shock response in human cells by 6-plex pulsed SILAC experiments, demonstrating the unique biological merits of our in vivo platform to disclose translational regulations for cellular response to stress.
URI
https://pr.ibs.re.kr/handle/8788114/8683
DOI
10.1021/acs.analchem.9b05148
ISSN
0003-2700
Appears in Collections:
Center for RNA Research(RNA 연구단) > 1. Journal Papers (저널논문)
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