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  • .; other species collected were Culex (Culex) torrentium (Martini) and An. plumbeus (Table 1)....
  • Pagac., R....
Université de Fribourg

ER membrane phospholipids and surface tension control cellular lipid droplet formation

M'barek, Kalthoum Ben ; Ajjaji, Dalila ; Chorlay, Aymeric ; Vanni, Stefano ; Forêt, Lionel ; Thiam, Abdou Rachid

In: Developmental Cell, 2017, vol. 41, no. 6, p. 591–604.e7

Cells convert excess energy into neutral lipids that are made in the endoplasmic reticulum (ER) bilayer. The lipids are then packaged into spherical or budded lipid droplets (LDs) covered by a phospholipid monolayer containing proteins. LDs play a key role in cellular energy metabolism and homeostasis. A key unanswered question in the life of LDs is how they bud off from the ER. Here, we...

  • In storage conditions, nutrients are transformed into neutral lipids (oils) such as triglycerides, sterol esters, or squalene, which are packaged into organelles called lipid droplets (LDs) (Martin and Parton, 2006)....
  • Pagac, M., Cooper, D.E., Qi, Y., Lukmantara, I.E., Mak, H.Y., Wu, Z., Tian, Y., Liu, Z., Lei, M., and Du, X. (2016)....
  • Martin, S., and Parton, R.G. (2006)....
Université de Fribourg

The active site of yeast phosphatidylinositol synthase Pis1 is facing the cytosol

Bochud, Arlette ; Conzelmann, Andreas

In: Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids, 2015, vol. 1851, no. 5, p. 629–640

Five yeast enzymes synthesizing various glycerophospholipids belong to the CDP-alcohol phosphatidyltransferase (CAPT) superfamily. They only share the so-called CAPT motif, which forms the active site of all these enzymes. Bioinformatic tools predict the CAPT motif of phosphatidylinositol synthase Pis1 as either ER luminal or cytosolic. To investigate the membrane topology of Pis1, unique...

  • Martin Pagac and Cécile Knöpfli for the data in Fig. 6, Dr....
  • Pagac, H.V. de la Mora, C....
  • Pagac, H.M....
Print Media
66 ans, 12000 éditions
Médiathèque Valais

Journal et feuille d'avis du Valais

Sion : [s.n.], 1903-1968

Année 1(1929)-année 30(1960)

Print Media
140 ans, 41000 éditions
Bibliothèque publique et universitaire

L'Impartial

La Chaux-de-Fonds : L'Impartial, 1880

No spécimen [0] (27.12.1880); no 1 (1.1.1881) -

  • Sep 25, 1906: Emile Pfenni ger, rue Léopold-Rohert 147. 6706-50-t- A ouer P uur St-Martin pro- J 1 1 jeune homme pour faire les commissions» entre ses heures d'école. — S'adresser à Mme Biolley, rue Numa-Droz 14-a. 16373-1 On demande le plus vite Qû p u a n f a OCl ïulHC. possible une servante pour un petit ménage. 1629S-1 S'adresser au bureau de I'I MPARTIAL ....
  • See the 1 results in the newspaper "L'Impartial"
Université de Fribourg

Membrane topology of yeast alkaline ceramidase YPC1

Ramachandra, Nagaraju ; Conzelmann, Andreas

In: Biochemical Journal, 2013, p. -

Ypc1p and Ydc1p are alkaline ceramide hydrolases, which reside in the ER. Ypc1p can catalyze the reverse reaction, i.e. the condensation of free fatty acids with phytosphingosine or dihydrosphingosine and overexpression of YPC1 or YDC1 can provide enough ceramide synthesis as to rescue the viability of cells lacking the normal acyl-CoA-dependent ceramide synthases. To better understand the...

  • Martin Pagac and Arlette Bochud for helpful discussions....
  • Pagac, M., Vazquez, H....
  • Pagac, M., de la Mora, H....
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...

  • " Topology of the microsomal glycerol-3-phosphate acyltransferase Gpt2p/Gat1p of Saccharomyces cerevisiae1 Martin Pagac1,2,3, Hector M....
  • S1B)(Pagac et al., 2011)....
  • Microsomes were analyzed using UBI-mal and PEG-mal as recently described (Pagac et al., 2011)....
Università della Svizzera italiana

Theory of planned behaviour, participation, and physical activity communication in the workplace

Bardus, Marco ; Suggs, Suzanne (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2012 ; 2012COM001.

Introduction: Promoting health and physical activity in the workplace is advocated by public health institutions across the globe. There is a need to find effective ways to understand the determinants of participation in physical activity in order to outline appropriate communication strategies to promote physical activity behaviour change in the workplace setting. E-mails and text messages...

  • E., Martin, B....
  • Martin, B....
  • Martin, B....
Université de Fribourg

Incorporation of ceramides into yeast glycosylphosphatidylinositol-anchored proteins can be monitored in vitro

Bosson, Régine ; Guillas, Isabelle ; Vionnet, Christine ; Roubaty, Carole ; Conzelmann, Andreas

In: Eukaryotic Cell, 2009, vol. 8, no. 3, p. 306-314

After glycosylphosphatidylinositols (GPIs) are added to GPI proteins of Saccharomyces cerevisiae, a fatty acid of the diacylglycerol moiety is exchanged for a C26:0 fatty acid through the subsequent actions of Per1 and Gup1. In most GPI anchors the thus modified diacylglycerol-based anchor is subsequently transformed into a ceramide-containing anchor, a reaction, which requires Cwh43. Here...

  • Pagac, A....
  • Martin-Yken H., A....
  • Martin. 1997....
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...

  • The Gup1 homologue of Trypanosoma brucei is a GPI glycosylphosphatidylinositol remodelase Malika Jaquenoud,1 Martin Pagac,1 Aita Signorell,2 Mohammed Benghezal,1† Jennifer Jelk,2 Peter Bütikofer2 and Andreas Conzelmann1* 1 Department of Medicine/Biochemistry, University of Fribourg, Chemin du Musée 5, CH-1700, Switzerland. 2 Institute of Biochemistry and Molecular Medicine, University of Bern, Bühlstrasse 28, CH-3012 Bern, Switzerland....
  • https://doc.rero.ch 11 SUPPLEMENTARY MATERIAL FOR THE ARTICLE THE GUP1 HOMOLOGUE OF TRYPANOSOMA BRUCEI IS A GPI GLYCOSYLPHOSPHATIDYLINOSITOL REMODELASE Malika Jaquenoud*, Martin Pagac*, Aita Signorell†, Mohammed Benghezal*‡, Jennifer Jelk†, Peter Bütikofer† and Andreas Conzelmann* From the Department of Medicine/Biochemistry, University of Fribourg, Chemin du Musée 5, CH-1700, Switzerland*, and the Institute of Biochemistry and Molecular Medicine, University of Bern, Bühlstrasse 28, CH-3012 Bern, Switzerland† ‡ present address: Helicobacter Research Laboratory, Microbiology M502, University of, Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009 Corresponding author e-mail: andreas.conzelmann@unifr.ch 1 A pHAGUP1 vector gup1 pHAtbGUP1 pHAtcGUP1 pHAafGUP1 -HA 50 pHAafGUP1 -Gas1p -Wbp1p 75 B pHAGUP1 BY4742 gup1 pHAtbGUP1 pHAtcGUP1 C immature Gas1p in % 70 60 50 40 30 20 10 0 average vector BY4742 pHAGUP1 vector pHAtbGUP1 pHAtcGUP1 pHAafGUP1 p=0.03 p=0.0034 Supplemental Figure S1 Supplementary Fig....