9dva

F-actin binding interface of alpha-E-catenin ABD (cadherin-catenin complex) and afadin

spinqualitylabelsall models 9dva, resolution 3.10Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 9dva is a 8 chain structure with sequence from Gallus gallus and Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 3.1Å Ligands: ADP, HIC, MG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function ACTS_CHICK Actins are highly conserved proteins that are involved in various types of cell motility and are ubiquitously expressed in all eukaryotic cells. Publication Abstract from PubMed The E-cadherin-beta-catenin-alphaE-catenin (cadherin-catenin) complex couples the cytoskeletons of neighboring cells at adherens junctions (AJs) to mediate force transmission across epithelia. Mechanical force and auxiliary binding partners converge to stabilize the cadherin-catenin complex's inherently weak binding to actin filaments (F-actin) through unclear mechanisms. Here we show that afadin's coiled-coil (CC) domain and vinculin synergistically enhance the cadherin-catenin complex's F-actin engagement. The cryo-EM structure of an E-cadherin-beta-catenin-alphaE-catenin-vinculin-afadin-CC supra-complex bound to F-actin reveals that afadin-CC bridges adjacent alphaE-catenin actin-binding domains along the filament, stabilizing flexible alphaE-catenin segments implicated in mechanical regulation. These cooperative binding contacts promote the formation of supra-complex clusters along F-actin. Additionally, cryo-EM variability analysis links supra-complex binding along individual F-actin strands to nanoscale filament curvature, a deformation mode associated with cytoskeletal forces. Collectively, this work elucidates a mechanistic framework by which vinculin and afadin tune cadherin-catenin complex-cytoskeleton coupling to support AJ function across varying mechanical regimes. Afadin mediates cadherin-catenin complex clustering on F-actin linked to cooperative binding and filament curvature.,Gong R, Reynolds MJ, Sun X, Alushin GM bioRxiv [Preprint]. 2024 Oct 11:2024.10.08.617332. doi: , 10.1101/2024.10.08.617332. PMID:39415991 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

Proteopedia Page Contributors and Editors (what is this?)

OCA