[Time, a lever for change].

Race against time, interruptions, operating room tardiness, handover times… Expressions such as these show the significance of time in health professionals' everyday working lives. Health care facilities are no exception. In these structures, time is necessary to accomplish organisational transformation projects for the benefit of patients and users.

Identification and characterization of a triacylglycerol lipase in Arabidopsis homologous to mammalian acid lipases.

Triacylglycerol (TAG) lipases have been thoroughly characterized in mammals and microorganisms. By contrast, very little is known on plant TAG lipases. An Arabidopsis cDNA called AtLip1 (At2g15230), which exhibits strong homology to lysosomal acid lipase, was found to drive the synthesis of an active TAG lipase when expressed in the baculovirus system.

Isolation of a cDNA from Arabidopsis thaliana that complements the sec14 mutant of yeast.

The SEC14 gene of Saccharomyces cerevisiae codes for a phosphatidylinositol-transfer protein (Sec14p(sc)) which is capable of transferring both phosphatidylinositol and phosphatidylcholine between membranes in vitro. Genetic and biochemical studies conducted in S. cerevisiae have shown that this protein acts as an inhibitor of phosphatidylcholine biosynthesis via the so-called Kennedy pathway only.

Phospholipase D from soybean (Glycine max L.) suspension-cultured cells: purification, structural and enzymatic properties.

Phospholipase D (phosphatidylcholine phosphatidohydrolase EC 3.1.4.

Purification and characterization of a fatty acyl-ester hydrolase from post-germinated sunflower seeds.

Fatty acyl-ester hydrolase was not detectable in dry sunflower seeds using various p-nitrophenyl-acyl-esters, 1,2-O-didodecyl-rac-glycero-3-glutaric acid-resorufin ester or emulsified sunflower oil as substrate. After inhibition of the seeds, acyl-ester hydrolase activity slowly developed in cotyledon extracts and was maximal after 5 days. No activity was directly measurable on oil bodies.