ArticleCurrent biology : CB2025
Force-activated zyxin assemblies coordinate actin nucleation and crosslinking to orchestrate stress fiber repair.
Article in Current biology : CB, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Article
- Nuclear Mechanics and Nuclear Mechanotransduction in Cancer Cell Migration and Invasion.Biomolecules · 2026Review
- Bisphosphate nucleotidase 1 promotes progression and docetaxel resistance in triple-negative breast cancer via STUB1-mediated destabilization of LIMA1.Cell death & disease · 2026Article
- Co-Immunoprecipitation-Coupled Mass Spectrometry Analysis of Zyxin's Interactome and Phosphosites in EarlyInternational journal of molecular sciences · 2026Article
- Strained actin binding by the Prickle2 LIM domains and their regulation in the full-length protein.Molecular biology of the cell · 2026Article
- Actin cytoskeleton protection by the formin-mediated safety valve.Current opinion in cell biology · 2025Review
- Cracking under stress: How actin might turn failure into action.Biophysical journal · 2024Article
- Principles and regulation of mechanosensing.Journal of cell science · 2024Review
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3 authors.
Funding
Abstract
As the cytoskeleton sustains cell and tissue forces, it incurs physical damage that must be repaired to maintain mechanical homeostasis. The LIN-11, Isl-1, and Mec-3 (LIM)-domain protein zyxin detects force-induced ruptures in actin-myosin stress fibers, coordinating downstream repair factors to restore stress fiber integrity through unclear mechanisms. Here, we reconstitute stress fiber repair with purified proteins, uncovering detailed links between zyxin's force-regulated binding interactions and cytoskeletal dynamics. In addition to binding individual tensed actin filaments (F-actin), zyxin's LIM domains form force-dependent assemblies that bridge broken filament fragments. Zyxin assemblies engage repair factors through multivalent interactions, coordinating nucleation of new F-actin by VASP and its crosslinking into aligned bundles by ɑ-actinin. Through these combined activities, stress fiber repair initiates within the cores of micron-scale damage sites in cells, explaining how these F-actin-depleted regions are rapidly restored. Thus, zyxin's force-dependent organization of actin repair machinery inherently operates at the network scale to maintain cytoskeletal integrity.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.