Lipid-transfer proteins in biosynthetic pathways.
Compartmentalization is a defining feature of eukaryotic cells that allows the spatial segregation of different functions, such as protein and lipid synthesis, and ensures their fidelity and efficiency. This imposes the need for an intense flux of metabolic intermediates between segregated enzymatic activities, as seen for the sequential transport of neosynthesized proteins through the segments of the secretory pathway during their post-translational modification. For lipid synthesis, the identification of proteins that transfer lipids between membranes has revealed an additional mechanism for this intercompartment exchange. The intense interest elicited by the lipid-transfer proteins over the last few years has led to the definition of their central role in key processes, such as lipid metabolism, membrane trafficking, and signaling.
D'Angelo
Giovanni
G
Department of Cell Biology and Oncology, Consorzio Mario Negri Sud, 66030 Santa Maria Imbaro Chieti, Italy.
Vicinanza
Mariella
M
De Matteis
Maria Antonietta
MA
D000818:Animals; D001692:Biological Transport; D053898:Biosynthetic Pathways; D002352:Carrier Proteins / Q000502:physiology*; D006801:Humans; D007425:Intracellular Membranes / Q000378:metabolism*; D050356:Lipid Metabolism; D015398:Signal Transduction
D002352:Carrier Proteins; C030363:lipid transfer protein