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lüll Multivesicular bodies: co-ordinated progression to maturity Woodman PG; Futter CECurr Opin Cell Biol 2008[Aug]; 20 (4): 408-14Multivesicular endosomes/bodies (MVBs) sort endocytosed proteins to different destinations. Many lysosomally directed membrane proteins are sorted onto intralumenal vesicles, whilst recycling proteins remain on the perimeter membrane from where they are removed via tubular extensions. MVBs move to the cell centre during this maturation process and, when all recycling proteins have been removed, fuse with lysosomes. Recent advances have identified endosomal-sorting complex required for transport (ESCRT)-dependent and ESCRT-independent pathways in intralumenal vesicle formation and mechanisms for sorting recycling cargo into tubules. Cytoskeletal motors, through interactions with these machineries and by regulating MVB movement, help to co-ordinate events leading to a mature, fusion-competent MVB.|Animals[MESH]|Biological Transport[MESH]|Endosomes/*metabolism[MESH]|Humans[MESH]|Transport Vesicles/*metabolism[MESH]|Vesicular Transport Proteins/*metabolism[MESH] |