Proszynski TJ~Walch-Solimena C, 2005

Pubmed ID 16330752
Title A genome-wide visual screen reveals a role for sphingolipids and ergosterol in cell surface delivery in yeast.
Authors Tomasz J Proszynski, Robin W Klemm, Maike Gravert, Peggy P Hsu, Yvonne Gloor, Jan Wagner, Karol Kozak, Hannes Grabner, Karen Walzer, Michel Bagnat, Kai Simons, Christiane Walch-Solimena
Abstract Recently synthesized proteins are sorted at the trans-Golgi network into specialized routes for exocytosis. Surprisingly little is known about the underlying molecular machinery. Here, we present a visual screen to search for proteins involved in cargo sorting and vesicle formation. We expressed a GFP-tagged plasma membrane protein in the yeast deletion library and identified mutants with altered marker localization. This screen revealed a requirement of several enzymes regulating the synthesis of sphingolipids and ergosterol in the correct and efficient delivery of the marker protein to the cell surface. Additionally, we identified mutants regulating the actin cytoskeleton (Rvs161p and Vrp1p), known membrane traffic regulators (Kes1p and Chs5p), and several unknown genes. This visual screening method can now be used for different cargo proteins to search in a genome-wide fashion for machinery involved in post-Golgi sorting.
Citation Proc. Natl. Acad. Sci. U.S.A. 2005; 102:17981-6


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Paper Phenotype Condition Reference Collection Tested mutants Data Details
Proszynski TJ~Walch-Solimena C, 2005 dot-like protein localization in the cytoplasm (Fus1-Mid2 chimera) raffinose [2%], galactose [2%] hap a ~4,848 Discrete
Proszynski TJ~Walch-Solimena C, 2005 protein localization to vacuole (Fus1-Mid2 chimera) raffinose [2%], galactose [2%] hap a ~4,848 Discrete

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