منابع مشابه
COP-coated vesicles
Approximately one third of a cell's proteins are destined to function outside the cell's boundaries or while embedded within cellular membranes. Ensuring these proteins reach their diverse final destinations with temporal and spatial accuracy is essential for cellular physiology. In eukaryotes, a set of interconnected organelles form the secretory pathway, which encompasses the terrain that the...
متن کاملTBC1D14 sets the TRAPP for ATG9
Amino acid withdrawal induces the formation of autophagosomes, which results in dozens of these large double-membrane vesicles appearing in the starved cell within 10-15 min, and the initiation of autophagy. This vesicle-mediated response clearly requires an adequate supply of membrane and a tight molecular regulation creating a substantial challenge for the cell in terms of vesicle trafficking...
متن کاملTwo Human ARFGAPs Associated with COP-I-Coated Vesicles
ADP-ribosylation factors (ARFs) are critical regulators of vesicular trafficking pathways and act at multiple intracellular sites. ADP-ribosylation factor-GTPase-activating proteins (ARFGAPs) are proposed to contribute to site-specific regulation. In yeast, two distinct proteins, Glo3p and Gcs1p, together provide overlapping, essential ARFGAP function required for coat protein (COP)-I-dependent...
متن کاملβ-COP as a Component of Transport Vesicles for HDL Apolipoprotein-Mediated Cholesterol Exocytosis.
OBJECTIVE HDL and its apolipoproteins protect against atherosclerotic disease partly by removing excess cholesterol from macrophage foam cells. But the underlying mechanisms of cholesterol clearance are still not well defined. We investigated roles of vesicle trafficking of coatomer β-COP in delivering cholesterol to the cell surface during apoA-1 and apoE-mediated lipid efflux from fibroblasts...
متن کاملGPR40: Good Cop, Bad Cop?
Since its deorphanization in 2003 (1,2), the fatty acid receptor GPR40 (FFAR1/FFA1) has drawn considerable attention as a potential therapeutic target for type 2 diabetes. Because fatty acids acutely amplify insulin secretion only in the presence of glucose, the discovery of a “drugable” cell surface receptor whose activation glucose-dependently enhances insulin release generated much interest ...
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ژورنال
عنوان ژورنال: Developmental Cell
سال: 2007
ISSN: 1534-5807
DOI: 10.1016/j.devcel.2007.02.001