c-Fos Activates Glucosylceramide Synthase and Glycolipid Synthesis in PC12 cells.

CRESPO PM; SILVESTRE DC; GIL GA; MACCIONI HJF; DANIOTTI JL; CAPUTTO BL

ASBMB Inc.

Lugar: Hobokob, New Jersey; Año: 2008 vol. 283 p. 31163 - 31163

font size="2" face="WarnockPro-Semibold"> It has been demonstrated that c-Fos has, in addition to its well recognized AP-1 transcription factor activity, the capacity to associate to the endoplasmic reticulum and activate key enzymes involved in the synthesis of phospholipids required for membrane biogenesis during cell growth and neurite formation. Because membrane genesis requires the coordinated supply of all its integral membrane components, the question emerges as to whether c-Fos also activates the synthesis of glycolipids, another ubiquitous membrane component. We show that c-Fos activates the metabolic labeling of glycolipids in differentiating PC12 cells. Specifically, c-Fos activates the enzyme glucosylcerami