Université de Fribourg

Topology of the microsomal glycerol-3-phosphate acyltransferase Gpt2p/Gat1p of Saccharomyces cerevisiae

Pagac, Martin ; Vazquez, Hector M. ; Bochud, Arlette ; Roubaty, Carole ; Knöpfli, Cécile ; Vionnet, Christine ; Conzelmann, Andreas

In: Molecular Biology, 2012, p. -

All glycerophospholipids are made from phosphatidic acid, which, according to the traditional view, is generated at the cytosolic surface of the ER. In yeast, phosphatidic acid is synthesized de novo by two acyl-CoA dependent acylation reactions. The first is catalyzed by one of the two homologous glycerol-3-phosphate acyltransferases Gpt2p/Gat1p and Sct1p/Gat2p, the second by one of the two...

Université de Fribourg

The Gup1 homologue of Trypanosoma brucei is a GPI glycosylphosphatidylinositol remodelase

Jaquenoud, Malika ; Pagac, Martin ; Signorell, Aita ; Benghezal, Mohammed ; Jelk, Jennifer ; Bütikofer, Peter ; Conzelmann, Andreas

In: Molecular Microbiology, 2008, vol. 67, no. 1, p. 202-212

Glycosylphosphatidylinositol (GPI) lipids of Trypanosoma brucei undergo lipid remodelling, whereby longer fatty acids on the glycerol are replaced by myristate (C14:0). A similar process occurs on GPI proteins of Saccharomyces cerevisiae where Per1p first deacylates, Gup1p subsequently reacylates the anchor lipid, thus replacing a shorter fatty acid by C26:0. Heterologous expression...

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2 Pagac, Martin