Impact of phosphoproteomics on studies of bacterial physiology

Abstract : Protein phosphorylation on serine, threonine and tyrosine is recognized as a major tool of signal transduction in bacteria. However, progress in the field has been hampered by the lack of global and site-specific data on bacterial phosphoproteomes. Recent advances in mass spectrometrybased proteomics have encouraged bacteriologists to start using powerful gel-free approaches for global detection of phosphorylated proteins. These studies have generated large data sets of proteins phosphorylated on serine, threonine and tyrosine, with identified phosphorylation sites which represent an excellent starting point for in-depth physiological characterization of kinases and their substrates. The list of phosphorylated proteins inspired a number of physiological studies in which the identity of the phosphorylation site facilitated the elucidation of molecular mechanisms of signaling and regulation. Bacterial phosphoproteomics also provided interesting insights into the evolutionary aspects of protein phosphorylation. The field is rapidly embracing quantitative mass spectrometry strategies, comparing phosphoproteome dynamics in changing conditions and aiming to reconstruct the entire regulatory networks by linking kinases to their physiological substrates.
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Ivan Mijakovic, Boris Macek. Impact of phosphoproteomics on studies of bacterial physiology. FEMS Microbiology Reviews, Wiley-Blackwell, 2012, 36 (4), pp.877 - 892. ⟨10.1111/j.1574-6976.2011.00314.x⟩. ⟨hal-01003426⟩

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