Exo70 generates membrane curvature for morphogenesis and cell migration.
Exo70 generates membrane curvature for morphogenesis and cell migration.
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DOI:
10.1016/j.devcel.2013.07.007
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发表时间:
2013-08-12
影响因子:
11.8
通讯作者:
Guo, Wei
中科院分区:
文献类型:
--
作者:
Zhao, Yuting;Liu, Jianglan;Yang, Changsong;Capraro, Benjamin R.;Baumgart, Tobias;Bradley, Ryan P.;Ramakrishnan, N.;Xu, Xiaowei;Radhakrishnan, Ravi;Svitkina, Tatyana;Guo, Wei
Dynamic shape changes of the plasma membrane are fundamental to many processes ranging from morphogenesis and cell migration to phagocytosis and viral propagation. Here we demonstrate that Exo70, a component of the exocyst complex, induces tubular membrane invaginations towards the lumen of synthetic vesicles in vitro and generates protrusions on the surface of cells. Biochemical analyses using Exo70 mutants and independent molecular dynamics simulations based on Exo70 structure demonstrate that Exo70 generates negative membrane curvature through an oligomerization-based mechanism. In cells, the membrane-deformation function of Exo70 is required for protrusion formation and directional cell migration. Exo70 thus represents a membrane-bending protein that may couple actin dynamics and plasma membrane remodeling for morphogenesis.
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