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Properties of 13C-Substituted Arginine in Stable Isotope Labeling by Amino Acids in Cell Culture (SILAC)

Ong, Shao-En, Kratchmarova, Irina, Mann, Matthias·2003·Journal of Proteome Research

Abstract

We have recently described a method, stable isotope labeling by amino acids in cell culture (SILAC) for the accurate quantitation of relative protein abundances. Cells were metabolically labeled with deuterated leucine, leading to complete incorporation within about five cell doublings. Here, we investigate fully substituted 13C-labeled arginine in the SILAC method. After tryptic digestion, there is a single label at the C-terminal position in half of the peptides. Labeled and unlabeled peptides coelute in liquid chromatography-mass spectrometric analysis, eliminating quantitation error due to unequal sampling of ion profiles. Tandem mass spectrum interpretation and database identification are aided by the predictable shift of the y-ions in the labeled form. The quantitation of mixtures of total cell lysates in known ratios resolved on a one-dimensional SDS-PAGE gel produced consistent and reproducible results with relative standard deviations better than five percent under optimal conditions.

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Authors
Ong, S.-E., Kratchmarova, I., & Mann, M.
Venue
Journal of Proteome Research
Published
2002-12-13
Volume
2
Issue
2
Pages
173-181
ISSN
  • 1535-3893 (ISSN-L)
  • 1535-3907
OpenAlex
W2064543105
Cited by
432
References
0
FWCI
8.09
Type
journal article
Language
en
Open access
closed

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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