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Phosphoproteomic Analysis of Isolated Mitochondria in Yeast

Abstract : Mitochondria play a central role in cellular energy metabolism and cell death. Deregulation of mitochondrial functions is associated with several human pathologies (neurodegenerative diseases, neuromuscular diseases, type II diabetes, obesity, cancer). The steadily increasing number of identified mitochondrial phosphoproteins, kinases and phosphatases in last years suggests that reversible protein phosphorylation plays an important part in the control of mitochondrial processes. In addition, many mitochondrial phosphoproteins probably still remain to be identified, considering that 30% of proteins are expected to be phosphorylated in eukaryotes. In this chapter, we describe two procedures for the analysis of the mitochondrial phosphoproteome. The first one is a qualitative method that combines Blue native and Sodium Dodecyl Sulfate – PolyAcrylamide Gel Electrophoresis (2D -BN /SDS-PAGE) and specific phosphoprotein staining. The second one is a quantitative approach that associates mitochondrial peptide labelling, phosphopeptide enrichment and mass spectrometry.
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Margaux Renvoisé, Ludovic Bonhomme, Marlene Davanture, Michel Zivy, Claire Lemaire. Phosphoproteomic Analysis of Isolated Mitochondria in Yeast. Aik-Choon Tan; Paul H.Huang. Kinase signaling networks, 1636, Springer Protocols, pp.283-299, 2017, Methods in Molecular Biology, 9781493971527. ⟨10.1007/978-1-4939-7154-1_18⟩. ⟨hal-02363352⟩

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