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A Global Protein Kinase and Phosphatase Interaction Network in Yeast

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Breitkreutz et al.

Science 21 May 2010: Vol. 328 no. 5981 pp. 1043-1046 http://www.ncbi.nlm.nih.gov/pubmed/20489023

The interactions of protein kinases and phosphatases with their regulatory subunits and substrates underpin cellular regulation. We identified a kinase and phosphatase interaction (KPI) network of 1844 interactions in budding yeast by mass spectrometric analysis of protein complexes. The KPI network contained many dense local regions of interactions that suggested new functions. Notably, the cell cycle phosphatase Cdc14 associated with multiple kinases that revealed roles for Cdc14 in mitogen-activated protein kinase signaling, the DNA damage response, and metabolism, whereas interactions of the target of rapamycin complex 1 (TORC1) uncovered new effector kinases in nitrogen and carbon metabolism. An extensive backbone of kinase-kinase interactions cross-connects the proteome and may serve to coordinate diverse cellular responses.

This talk is part of the CRI Reading Group on Cancer Systems Biology series.

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