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Related Concept Videos

Intracellular Signaling Affects Focal Adhesions01:17

Intracellular Signaling Affects Focal Adhesions

Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Cell-matrix's Response to Mechanical Forces01:13

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...
Mechanism of Filopodia Formation01:39

Mechanism of Filopodia Formation

Filopodia are thin, actin-rich cellular protrusions that play an important role in many fundamental cellular functions. They vary in their occurrence, length, and positioning in different cell types, suggesting their diverse roles.
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
Generation of Straight or Branched Actin Filaments01:14

Generation of Straight or Branched Actin Filaments

The straight or branched structure formation of actin filaments is controlled by nucleating proteins such as the formins and Arp2/3 complex. Formin-mediated assembly results in straight filaments, whereas Arp2/3 protein complex-mediated assembly results in branched actin filaments.
Arp2/3 Complex
Arp2/3 complex is a seven-subunit complex consisting of two proteins similar to actin- Arp2 and Arp3, and five other subunits that help keep Arp2 and Arp3 inactive. When required, the complex is...
Calmodulin-dependent Signaling01:16

Calmodulin-dependent Signaling

Calmodulin (CaM) is a calcium-binding protein in eukaryotes that controls various calcium-regulated cellular processes. It has four calcium-binding sites that bind calcium to form the calcium-calmodulin ( Ca2+-CaM) complex. GPCR stimulation increases the calcium levels in the cells that bind to CaM and induces a conformational change.
The Ca2+-CaM complex does not have enzymatic activity by itself. Instead, the complex binds downstream target proteins, including membrane proteins or enzymes,...
Activation of Integrins01:15

Activation of Integrins

Integrins bind ligands and transmit information from outside the cell to inside or vice-versa through an "outside-in signaling" or "inside-out signaling."
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Related Experiment Video

Updated: Jun 28, 2026

Measurement of Force-Sensitive Protein Dynamics in Living Cells Using a Combination of Fluorescent Techniques
08:28

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

Published on: November 2, 2018

Formins in cell signaling.

Kevin G Young1, John W Copeland

  • 1Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada K1H 8M5.

Biochimica Et Biophysica Acta
|November 4, 2008
PubMed
Summary

Formins are key proteins regulating cytoskeletal dynamics and gene expression. This review details how formins (formin homology proteins) modulate Rho GTPase signaling, impacting cell structure and function.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Formin homology proteins are crucial for cytoskeletal remodeling.
  • Mutations in formins cause actin cytoskeleton defects.
  • Formins interact with Rho family GTPases, influencing their function.

Purpose of the Study:

  • To review the role of formins in cytoplasmic signal transduction.
  • To explore the downstream effects of formins on gene expression.
  • To highlight the connection between formins, Rho GTPases, and cytoskeletal regulation.

Main Methods:

  • Literature review of formin research.
  • Analysis of studies on formin interactions with Rho GTPases.
  • Examination of formin's role in transcriptional regulation via SRF.

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Analyzing Cell Surface Adhesion Remodeling in Response to Mechanical Tension Using Magnetic Beads
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A Simplified System for Evaluating Cell Mechanosensing and Durotaxis In Vitro
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A Simplified System for Evaluating Cell Mechanosensing and Durotaxis In Vitro

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Last Updated: Jun 28, 2026

Measurement of Force-Sensitive Protein Dynamics in Living Cells Using a Combination of Fluorescent Techniques
08:28

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

Published on: November 2, 2018

Analyzing Cell Surface Adhesion Remodeling in Response to Mechanical Tension Using Magnetic Beads
07:55

Analyzing Cell Surface Adhesion Remodeling in Response to Mechanical Tension Using Magnetic Beads

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09:50

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Main Results:

  • Formins act as both downstream effectors and upstream modulators of Rho GTPase signaling.
  • Formins regulate actin and microtubule cytoskeletal structures.
  • Formins are involved in cellular processes like polarity establishment, vesicle movement, and focal adhesion remodeling.

Conclusions:

  • Formins play a significant role in cytoplasmic signal transduction pathways.
  • Formins are critical for regulating gene expression, particularly through SRF activation.
  • Understanding formin function is essential for comprehending basic cellular processes.