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Simultaneous Assessment of Kinetic, Site-Specific, and Structural Aspects of Enzymatic Protein Phosphorylation

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Yamashita,  Masami
Conti, Elena / Structural Cell Biology, Max Planck Institute of Biochemistry, Max Planck Society;

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Conti,  Elena
Conti, Elena / Structural Cell Biology, Max Planck Institute of Biochemistry, Max Planck Society;

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Citation

van de Waterbeemd, M., Lössl, P., Gautier, V., Marino, F., Yamashita, M., Conti, E., et al. (2014). Simultaneous Assessment of Kinetic, Site-Specific, and Structural Aspects of Enzymatic Protein Phosphorylation. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 53(36), 9660-9664. doi:10.1002/anie.201404637.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0024-2437-9
Abstract
Protein phosphorylation is a widespread process forming the mechanistic basis of cellular signaling. Up to now, different aspects, for example, site-specificity, kinetics, role of co-factors, and structure-function relationships have been typically investigated by multiple techniques that are incompatible with one another. The approach introduced here maximizes the amount of information gained on protein (complex) phosphorylation while minimizing sample handling. Using high-resolution native mass spectrometry on intact protein (assemblies) up to 150 kDa we track the sequential incorporation of phosphate groups and map their localization by peptide LC-MS/MS. On two model systems, the protein kinase G and the interplay between Aurora kinase A and Bora, we demonstrate the simultaneous monitoring of various aspects of the phosphorylation process, namely the effect of different cofactors on PKG autophosphorylation and the interaction of AurA and Bora as both an enzyme-substrate pair and physical binding partners.