A systematic screen for protein-lipid interactions in Saccharomyces cerevisiae

Oriol Gallego, Matthew J Betts, Jelena Gvozdenovic-Jeremic, Kenji Maeda, Christian Matetzki, Carmen Aguilar-Gurrieri, Pedro Beltran-Alvarez, Stefan Bonn, Carlos Fernández-Tornero, Lars Juhl Jensen, Michael Kuhn, Jamie Trott, Vladimir Rybin, Christoph W Müller, Peer Bork, Marko Kaksonen, Robert B Russell, Anne-Claude Gavin

117 Citationer (Scopus)

Abstract

Proteing-metabolite networks are central to biological systems, but are incompletely understood. Here, we report a screen to catalog proteing-lipid interactions in yeast. We used arrays of 56 metabolites to measure lipid-binding fingerprints of 172 proteins, including 91 with predicted lipid-binding domains. We identified 530 proteing-lipid associations, the majority of which are novel. To show the data set's biological value, we studied further several novel interactions with sphingolipids, a class of conserved bioactive lipids with an elusive mode of action. Integration of live-cell imaging suggests new cellular targets for these molecules, including several with pleckstrin homology (PH) domains. Validated interactions with Slm1, a regulator of actin polarization, show that PH domains can have unexpected lipid-binding specificities and can act as coincidence sensors for both phosphatidylinositol phosphates and phosphorylated sphingolipids.

OriginalsprogEngelsk
TidsskriftMolecular Systems Biology
Vol/bind6
Sider (fra-til)430
ISSN1744-4292
DOI
StatusUdgivet - 2010
Udgivet eksterntJa

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