Endocytic proteins are partitioned at the edge of the clathrin lattice in mammalian cells.
Endocytic proteins are partitioned at the edge of the clathrin lattice in mammalian cells.
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DOI:
10.1038/ncb3498
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发表时间:
2017-04
影响因子:
21.3
通讯作者:
Taraska JW
中科院分区:
文献类型:
--
作者:
Sochacki KA;Dickey AM;Strub MP;Taraska JW
Dozens of proteins capture, polymerize, and reshape the clathrin lattice during clathrin-mediated endocytosis (CME). How or if this ensemble of proteins is organized in relation to the clathrin coat is unknown. Here, we map key molecules involved in CME at the nanoscale with correlative super-resolution light and transmission electron microscopy. We localize 19 different endocytic proteins (amphiphysin1, AP2, β2-arrestin, CALM, clathrin, DAB2, dynamin2, EPS15, epsin1, epsin2, FCHO2, HIP1R, intersectin, NECAP, SNX9, stonin2, syndapin2, transferrin receptor, VAMP2) on thousands of individual clathrin structures, generating a comprehensive molecular architecture of endocytosis with nano-precision. We discover that endocytic proteins distribute into distinct spatial zones in relation to the edge of the clathrin lattice. The presence or concentrations of proteins within these zones vary at distinct stages of organelle development. We propose that endocytosis is driven by the recruitment, reorganization, and loss of proteins within these partitioned nano-scale zones.
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