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Updated: Jul 14, 2026

Deep Proteome Profiling by Isobaric Labeling, Extensive Liquid Chromatography, Mass Spectrometry, and Software-assisted Quantification
Published on: November 15, 2017
Labeling of Bifidobacterium longum cells with 13C-substituted leucine for quantitative proteomic analyses
Yohann Couté1, Céline Hernandez, Ron D Appel
1Biomedical Proteomics Research Group, Department of Structural Biology and Bioinformatics, University of Geneva, 1 Rue Michel Servet, 1211 Geneva 14, Switzerland.
Abstract:
Stable isotope labeling of amino acids in cell culture was used for Bifidobacterium longum. A comprehensive proteomic strategy was developed and validated by designing an appropriate semidefined medium that allows stable replacement of natural leucine by [(13)C6]leucine. Using this strategy, proteins having variations of at least 50% in their expression rates can be quantified with great confidence.

