+検索条件
-Structure paper
| タイトル | Structural basis of αE-catenin-F-actin catch bond behavior. |
|---|---|
| ジャーナル・号・ページ | Elife, Vol. 9, Year 2020 |
| 掲載日 | 2020年9月11日 |
著者 | Xiao-Ping Xu / Sabine Pokutta / Megan Torres / Mark F Swift / Dorit Hanein / Niels Volkmann / William I Weis / ![]() |
| PubMed 要旨 | Cell-cell and cell-matrix junctions transmit mechanical forces during tissue morphogenesis and homeostasis. α-Catenin links cell-cell adhesion complexes to the actin cytoskeleton, and mechanical ...Cell-cell and cell-matrix junctions transmit mechanical forces during tissue morphogenesis and homeostasis. α-Catenin links cell-cell adhesion complexes to the actin cytoskeleton, and mechanical load strengthens its binding to F-actin in a direction-sensitive manner. Specifically, optical trap experiments revealed that force promotes a transition between weak and strong actin-bound states. Here, we describe the cryo-electron microscopy structure of the F-actin-bound αE-catenin actin-binding domain, which in solution forms a five-helix bundle. In the actin-bound structure, the first helix of the bundle dissociates and the remaining four helices and connecting loops rearrange to form the interface with actin. Deletion of the first helix produces strong actin binding in the absence of force, suggesting that the actin-bound structure corresponds to the strong state. Our analysis explains how mechanical force applied to αE-catenin or its homolog vinculin favors the strongly bound state, and the dependence of catch bond strength on the direction of applied force. |
リンク | Elife / PubMed:32915141 / PubMed Central |
| 手法 | EM (らせん対称) |
| 解像度 | 3.56 Å |
| 構造データ | EMDB-21925, PDB-6wvt: |
| 化合物 | ![]() ChemComp-MG: ![]() ChemComp-ADP: |
| 由来 |
|
キーワード | CELL ADHESION / alphaE-catenin / catch bond / adherens junction |
ムービー
コントローラー
構造ビューア
万見文献について



著者

リンク




キーワード