Abstract
The ability to identify protein interactions is key to elucidating the molecular mechanisms of cellular processes, including mitosis and cell cycle regulation. Drosophila melanogaster, as a model system, provides powerful tools to study cell division using genetics, microscopy, and RNAi. Drosophila early embryos are highly enriched in mitotic protein complexes as their nuclei undergo 13 rounds of rapid, synchronous mitotic nuclear divisions in a syncytium during the first 2 h of development. Here, we describe simple methods for the affinity purification of protein complexes from transgenic fly embryos via protein A- and green fluorescent protein-tags fused to bait proteins of interest. This in vivo proteomics approach has allowed the identification of several known and novel mitotic protein interactions using mass spectrometry, and it expands the use of the Drosophila model in modern molecular biology.
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Acknowledgements
This work was supported by grants from the Canadian Institutes of Health Research (CIHR) and the Natural Sciences and Engineering Research Council of Canada (to V.A.) and by Cancer Research UK, Medical Research Council, and Biotechnology and Biological Sciences Research Council grants (to D.M.G.). V.A. holds a New Investigator Award from the CIHR. IRIC is supported in part by the Canada Foundation for Innovation, and the FRQS. Z.L. holds the Long-term Fellowship of the Federation of European Biochemical Societies (FEBS). Some of the destination vectors for the Gateway cloning were obtained from the Drosophila Genomics Research Centre. We are grateful to Janusz Debski and Michal Dadlez (MS LAB, Institute of Biochemistry and Biophysics PAS, Warsaw, Poland) and Pierre Thibault and Éric Bonneil (IRIC, Université de Montréal) for mass spectrometric analysis.
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Lipinszki, Z. et al. (2014). Affinity Purification of Protein Complexes from Drosophila Embryos in Cell Cycle Studies. In: Noguchi, E., Gadaleta, M. (eds) Cell Cycle Control. Methods in Molecular Biology, vol 1170. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-0888-2_33
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DOI: https://doi.org/10.1007/978-1-4939-0888-2_33
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