To identify cellular substrates of the protein kinases Plk1 and Mps1 on a global scale a chemical-genetic inhibition strategy was combined with quantitative mass spectrometry. For the first time, comparative replicate analyses were performed in cells expressing either inhibitor-sensitive or -resistant kinase variant. This experimental approach allowed the detection of protein kinase-mediated phosphorylation events with far greater reliability than earlier studies. Furthermore, by profiling 33 lung cancer cell lines, the feasibility of comparative phosphoproteome quantification across many different cell lines was demonstrated for the first time.
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To identify cellular substrates of the protein kinases Plk1 and Mps1 on a global scale a chemical-genetic inhibition strategy was combined with quantitative mass spectrometry. For the first time, comparative replicate analyses were performed in cells expressing either inhibitor-sensitive or -resistant kinase variant. This experimental approach allowed the detection of protein kinase-mediated phosphorylation events with far greater reliability than earlier studies. Furthermore, by profiling 33 lu...
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