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関連する概念動画

Intracellular Signaling Affects Focal Adhesions01:17

Intracellular Signaling Affects Focal Adhesions

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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...
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Tension Response at Adherens Junctions01:26

Tension Response at Adherens Junctions

3.0K
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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Mechanism of Filopodia Formation01:39

Mechanism of Filopodia Formation

2.6K
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...
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Actin Filament Depolymerization01:19

Actin Filament Depolymerization

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Actin filaments (F-actin) are composed of actin subunits. The dissociation of actin monomers can occur from either end of F-actin. The rate of dissociation is faster from the minus-end or the pointed end, where the actin subunits exist with a bound ADP, together known as ADP-actin. The depolymerization of F-actin is aided by proteins, including the actin-depolymerizing factor (ADF) and cofilin family of proteins, gelsolin, and glia maturation factor (GMF).
In F-actin, the ADF/cofilin proteins...
3.3K
Cell-matrix's Response to Mechanical Forces01:13

Cell-matrix's Response to Mechanical Forces

2.9K
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...
2.9K
Generation of Straight or Branched Actin Filaments01:14

Generation of Straight or Branched Actin Filaments

3.2K
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...
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Updated: Oct 22, 2025

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

Published on: November 2, 2018

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タリンとフル・レングス・ヴィンクーリン間の力依存の相互作用

Yinan Wang1, Mingxi Yao2, Karen B Baker3

  • 1Department of Physics, National University of Singapore, Singapore 117546, Singapore.

Journal of the American Chemical Society
|August 31, 2021
PubMed
まとめ
この要約は機械生成です。

機械的な力は,タリンとビンキュリンの相互作用を制御することによって,細胞の結合を調節する. タリンの強引な曝露

さらに関連する動画

Actin Co-Sedimentation Assay; for the Analysis of Protein Binding to F-Actin
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Actin Co-Sedimentation Assay; for the Analysis of Protein Binding to F-Actin

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Using Microfluidics and Fluorescence Microscopy to Study the Assembly Dynamics of Single Actin Filaments and Bundles
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Using Microfluidics and Fluorescence Microscopy to Study the Assembly Dynamics of Single Actin Filaments and Bundles

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関連する実験動画

Last Updated: Oct 22, 2025

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

8.4K
Actin Co-Sedimentation Assay; for the Analysis of Protein Binding to F-Actin
07:53

Actin Co-Sedimentation Assay; for the Analysis of Protein Binding to F-Actin

Published on: March 28, 2008

19.7K
Using Microfluidics and Fluorescence Microscopy to Study the Assembly Dynamics of Single Actin Filaments and Bundles
08:02

Using Microfluidics and Fluorescence Microscopy to Study the Assembly Dynamics of Single Actin Filaments and Bundles

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科学分野:

  • 細胞生物学
  • バイオ物理学
  • 分子動力学

背景:

  • タリンとビンキュリンは 細胞マトリックス結合における 機械感知に不可欠です
  • 両方のタンパク質は自己抑制状態で存在し,ビンキュリン結合にはタリン活性化が必要です.
  • タリン・ビンキュリンの相互作用に対する力の直接的な影響は,特徴づけられていなかった.

研究 の 目的:

  • 機械的な力がタリンとビンキュリンの間の相互作用の動態をどのように調節するかを調査する.
  • タリンのビンキュリン結合部位 (VBS) の制御における力の役割を解明する.
  • 力の適用でヴィンキュリンとタリンの形状の変化を理解する.

主な方法:

  • タリン-ビンキュリン結合運動を定量化するための単分子力スペクトロスコーピー.
  • ヴィンキュリン構造の動態分析
  • 分子ダイナミクスのシミュレーションで 力に依存する構造の変化を検知する.

主要な成果:

  • タリンの単一のVBSの機械的曝露は,ビンキュリンの活性化と結合に十分である.
  • VBS結合によって安定した,自己抑制された閉ざされた形状と開かれた形状の間のヴィンクーリン移行.
  • 機械的に暴露されたVBSは,孤立したVBSと比較して,著しく強化された結合親和性を表しています.

結論:

  • タリンの力に依存する形状の変化は,ビンキュリンの結合と活性化を直接制御する.
  • 力の調節によるVBS形状を含む新しい調節メカニズムは結合親和性を高めます.
  • この力と自己抑制の相互作用は タリン・ビンキュリン・メカノセンシング軸の鍵です