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Nature Biotechnology 22, 1139–1145 (1 September 2004) | doi:10.1038/nbt1005

Temporal analysis of phosphotyrosine-dependent signaling networks by quantitative proteomics

Blagoy Blagoev , Shao-En Ong , Irina Kratchmarova & Matthias Mann

To study the global dynamics of phosphotyrosine-based signaling events in early growth factor stimulation, we developed a mass spectrometric method that converts temporal changes to differences in peptide isotopic abundance. The proteomes of three cell populations were metabolically encoded with different stable isotopic forms of arginine.