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相关概念视频

The Structure of Intermediate Filaments01:19

The Structure of Intermediate Filaments

5.6K
The intermediate filaments are one of three widely studied cytoskeletal filaments. They are so named as their diameter (10 nm) is in between that of microfilaments (7 nm) and the microtubules (25 nm).  These filaments are highly stable and can remain intact when exposed to high salt concentrations and detergents. These filaments are responsible for providing stability and mechanical support to the cells. They also help in cell adhesion and maintaining tissue integrity.
Intermediate...
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Disassembly of Intermediate Filaments01:35

Disassembly of Intermediate Filaments

2.6K
Intermediate filaments (IFs) do not undergo spontaneous disassembly. Enzymes, kinases, and phosphatases add and remove phosphates from specific sites to regulate their disassembly. The IF concentration in the cytoplasm also regulates the disassembly. If the concentration crosses a threshold, it activates the protein kinases in the vicinity, allowing the phosphorylation of IFs.
Keratin proteins, found at the cell periphery near cell junctions, undergo a cycle of assembly and disassembly. In Type...
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Types of Intermediate Filaments01:31

Types of Intermediate Filaments

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The intermediate filaments are an essential component of the cytoskeleton. Presently six types of intermediate filament have been identified. Type I and II are acidic and basic keratin proteins. Type III is of mesodermal origin and comprises four proteins: vimentin, desmin, glial fibrillary acidic protein (GFAP), and peripherin. Vimentin is commonly found in mesenchymal cells, desmin in muscle cells, GFAP in astrocytes, while peripherin is found in peripheral nervous system neurons (PNS). Type...
4.8K
Formation of Intermediate Filaments00:57

Formation of Intermediate Filaments

3.9K
Intermediate filaments are cytoskeletal proteins with higher tensile strength and flexibility than microfilaments and microtubules. Unlike the other two cytoskeletal proteins, intermediate filament formation lacks the enzymatic activity to hydrolyze nucleotides like ATP and GTP to generate energy for polymerization. Therefore, the formation of intermediate filaments is multistep self-assembly. The involvement of any accessory proteins in intermediate filament formation has not yet been...
3.9K
Structural Protein Function01:56

Structural Protein Function

29.8K
Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin.
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity.  In bones and teeth, it mineralizes to...
29.8K
Reaction Mechanisms03:06

Reaction Mechanisms

30.5K
Chemical reactions often occur in a stepwise fashion, involving two or more distinct reactions taking place in a sequence. A balanced equation indicates the reacting species and the product species, but it reveals no details about how the reaction occurs at the molecular level. The reaction mechanism (or reaction path) provides details regarding the precise, step-by-step process by which a reaction occurs.
For instance, the decomposition of ozone appears to follow a mechanism with two steps:
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相关实验视频

Updated: Jan 22, 2026

Imaging Intermediate Filaments and Microtubules with 2-dimensional Direct Stochastic Optical Reconstruction Microscopy
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Imaging Intermediate Filaments and Microtubules with 2-dimensional Direct Stochastic Optical Reconstruction Microscopy

Published on: March 6, 2018

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介质纤维:结构-机械 交叉线条 交叉线条

Sarah Köster1, Harald Herrmann2

  • 1University of Göttingen, Institute for X-Ray Physics, Göttingen, Germany. sarah.koester@uni-goettingen.de.

Sub-cellular biochemistry
|January 20, 2026
PubMed
概括
此摘要是机器生成的。

中间纤维 (IF) 是独特的,稳定的纤维蛋白质. 它们的结构决定了它们的机械特性,为细胞力学和生物材料提供了洞察力.

关键词:
曲刚性 曲刚性 曲刚性 曲刚性卷卷卷卷卷卷卷卷卷的细胞骨架 细胞骨架凯拉丁基氨酸是什么?分子结构分子结构.持久的长度 持久的长度压力-应变关系关系在Vimentin中,使用了Vimentin.α α螺旋的螺旋

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Isolation of Intermediate Filament Proteins from Multiple Mouse Tissues to Study Aging-associated Post-translational Modifications
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Isolation of Intermediate Filament Proteins from Multiple Mouse Tissues to Study Aging-associated Post-translational Modifications

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Probing Myosin Ensemble Mechanics in Actin Filament Bundles Using Optical Tweezers
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Probing Myosin Ensemble Mechanics in Actin Filament Bundles Using Optical Tweezers

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相关实验视频

Last Updated: Jan 22, 2026

Imaging Intermediate Filaments and Microtubules with 2-dimensional Direct Stochastic Optical Reconstruction Microscopy
14:23

Imaging Intermediate Filaments and Microtubules with 2-dimensional Direct Stochastic Optical Reconstruction Microscopy

Published on: March 6, 2018

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Isolation of Intermediate Filament Proteins from Multiple Mouse Tissues to Study Aging-associated Post-translational Modifications
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Isolation of Intermediate Filament Proteins from Multiple Mouse Tissues to Study Aging-associated Post-translational Modifications

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Probing Myosin Ensemble Mechanics in Actin Filament Bundles Using Optical Tweezers
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Probing Myosin Ensemble Mechanics in Actin Filament Bundles Using Optical Tweezers

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科学领域:

  • 生物物理学的生物物理.
  • 细胞生物学 细胞生物学
  • 材料科学 材料科学 材料科学

背景情况:

  • 介质纤维 (IFs) 是细胞骨的主要组成部分.
  • 与actin和微管相比,IFs具有独特的机械特性.
  • 它们独特的结构是它们机械行为的基础.

研究的目的:

  • 为了阐明中间丝的结构机械关系.
  • 了解IF的组装过程和机械性能.
  • 探索仿生材料的潜在应用.

主要方法:

  • 先进的实验技术 (光学子,原子力显微镜).
  • 复杂的数据分析和数值建模.
  • 生物化学提取和体外组装研究.

主要成果:

  • 投资基金具有很高的灵活性,可扩展性和稳定性.
  • 描述了四重复合物的组装成10纳米纤维的特征.
  • 测量了piconewton力和微米长度尺度,显示了低曲刚性.

结论:

  • IFs的分子结构直接决定了它们的机械性能.
  • 了解IF力学为细胞机械作用提供了洞察力.
  • 投资基金作为开发新生物模拟材料的模型.