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Tension Response at Adherens Junctions

Tension Response at Adherens Junctions

The adherens junctions that anchor cells together are multi-protein complexes that dynamically adapt to mechanical stimuli such as tensile forces and shear stress. Mechanosensory proteins in these junctions can sense such mechanical stimuli and undergo a shift in their conformation, resulting in an altered function — a process called mechanotransduction.
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin...

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Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force.

Cell-matrix's Response to Mechanical Forces

Cell-matrix's Response to Mechanical Forces

In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue.
Anchoring junctions mechanically attach a cell to the...

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Related Experiment Video

Updated: Apr 1, 2026

Measurement of Force-Sensitive Protein Dynamics in Living Cells Using a Combination of Fluorescent Techniques

Measurement of Force-Sensitive Protein Dynamics in Living Cells Using a Combination of Fluorescent Techniques

Published on: November 2, 2018

Molecular-Scale Tools for Studying Mechanotransduction.

Andrew S LaCroix¹, Katheryn E Rothenberg¹, Brenton D Hoffman¹

¹Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708;

Annual Review of Biomedical Engineering

|October 1, 2015

Summary

Mechanical forces regulate cell and organism development. New techniques reveal how cells sense and respond to mechanical stimuli, a process called mechanotransduction, particularly focusing on how adhesion structures detect environmental stiffness.

Keywords:

focal adhesions mechanobiology molecular clutch rigidity sensing

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Area of Science:

Biophysics
Cell Biology
Biochemistry

Background:

Biological regulation traditionally relies on solution biochemistry principles.
Recent advancements enable studying mechanical loading's impact on protein biochemistry.
Mechanotransduction, the cellular response to mechanical stimuli, is a growing research area.

Purpose of the Study:

To review techniques for analyzing mechanical stimuli's role in biological systems.
To highlight molecular-scale insights into mechanotransduction.
To focus on subcellular adhesion structures in sensing environmental stiffness.

Main Methods:

Review of advanced experimental techniques.
Analysis of molecular and cellular responses to mechanical forces.
Examination of protein biochemical property changes under mechanical load.

Main Results:

Emergence of molecular-scale understanding of mechanotransduction.
Identification of techniques to link mechanical loading with biochemical changes.
Subcellular adhesion structures play a key role in sensing substrate stiffness.

Conclusions:

Mechanotransduction is a critical cellular process regulated by mechanical stimuli.
Understanding mechanotransduction is vital for tissue engineering and disease research.
Adhesion structures are central to cellular mechanosensing, impacting health and disease.