Membrane budding and scission by the ESCRT machinery: it's all in the neck.
Membrane budding and scission by the ESCRT machinery: it's all in the neck.
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DOI:
10.1038/nrm2937
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发表时间:
2010-08
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The endosomal sorting complexes required for transport (ESCRTs) catalyze one of the most unusual membrane remodelling events in cell biology. ESCRT-I and ESCRT-II direct membrane budding away from the cytosol by stabilizing bud necks without coating the bud and without being consumed in the buds. ESCRT-III cleaves the bud necks from their cytosolic face. ESCRT-III-mediated membrane neck cleavage is crucial for many processes, including the biogenesis of multivesicular bodies, viral budding, cytokinesis, and probably autophagy. Recent studies of ultrastructures induced by ESCRT-III overexpression in cells and the in vitro reconstitution of the budding and scission reactions have led to breakthroughs in understanding these remarkable membrane reactions.
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