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lüll Clathrin-coated pits: vive la difference?Benmerah A; Lamaze CTraffic 2007[Aug]; 8 (8): 970-82Because of the discovery of coated pits and vesicles more than 40 years ago and the identification of clathrin as a major component of the coat, it has been assumed that clathrin-coated pits (CCPs) are responsible for the uptake of most plasma membrane receptors undergoing internalization. The recent molecular characterization of clathrin-independent routes of endocytosis confirms that several alternative endocytic pathways operate at the plasma membrane of mammalian cells. This heterogeneous view of endocytosis has been expanded still further by recent studies, suggesting that different subpopulations of CCPs responsible for the internalization of specific sets of cargo may coexist. In the present review, we have discussed the experimental evidence in favor or against the existence of distinct parallel clathrin-dependent pathways at the plasma membrane.|Animals[MESH]|Clathrin/*physiology[MESH]|Coated Pits, Cell-Membrane/*physiology[MESH]|Endocytosis/physiology[MESH]|Humans[MESH] |