Abstract
To accelerate high-density interactome mapping, we developed a yeast two-hybrid interaction screening approach involving short-read second-generation sequencing (Y2H-seq) with improved sensitivity and a quantitative scoring readout allowing rapid interaction validation. We applied Y2H-seq to investigate enzymes involved in protein methylation, a largely unexplored post-translational modification. The reported network of 523 interactions involving 22 methyltransferases or demethylases is comprehensively annotated and validated through coimmunoprecipitation experiments and defines previously undiscovered cellular roles of nonhistone protein methylation.
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Acknowledgements
We thank B. Lukaszewska-McGreal from the MPIMG–mass spectrometry group and D. Roth and S. Paturej from the MPIMG–next-generation sequencing team for their experimental support. The work was supported by the Max Planck Society and the German Ministry of Science (NGFNp, NeuroNet-TP3 01GS08171; BMBF, 0315082).
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Authors and Affiliations
Contributions
M.W. performed Y2H screens. A.G. and U.S. developed the screening protocol. J.W. and A.G. analyzed the sequencing data. Z.Ö. contributed to cloning, Y2H and protein purification experiments. P.B. performed the co-IP experiments. M.W. and N.B. performed the methylation assays. D.M. performed the mass spectrometry analysis. T.V., B.T., E.E.W. and S.S. contributed tools and reagents. M.W., J.W. and U.S. analyzed the data and generated the figures. U.S. conceived and supervised the study and wrote the manuscript. All authors provided feedback on the manuscript.
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Supplementary Text and Figures
Supplementary Figures 1–6 and Supplementary Tables 1,2,4,6 and 7 (PDF 1171 kb)
Supplementary Tables 3 and 5
PPI data. Columns are as follows: Symbol_p NCBI ENTREZ GeneID of the prey protein; GeneID_p, NCBI Entrez symbol of the prey protein;Symbol_b, NCBI Entrez Gene ID of the bait protein (PMTs and PDeMs);GeneID_b, NCBI Entrez Gene ID of the bait protein (PMTs and PDeMs); Y2HRetest, retest result (sum of the fraction of bait-prey combinations found over tested); Matrix, interaction found in the matrix approach; Y2H-seq, interaction found in the Y2H-seq approach. (XLS 100 kb)
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Weimann, M., Grossmann, A., Woodsmith, J. et al. A Y2H-seq approach defines the human protein methyltransferase interactome. Nat Methods 10, 339–342 (2013). https://doi.org/10.1038/nmeth.2397
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DOI: https://doi.org/10.1038/nmeth.2397
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