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Related Concept Videos

Microtubules01:35

Microtubules

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There are three types of cytoskeletal structures in eukaryotic cells—microfilaments, intermediate filaments, and microtubules. With a diameter of about 25 nm, microtubules are the thickest of these fibers. Microtubules carry out a variety of functions that include cell structure and support, transport of organelles, cell motility (movement), and the separation of chromosomes during cell division.
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Microtubules01:18

Microtubules

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Microtubules are the thickest cytoskeletal filaments with a diameter of 25 nm. In prokaryotic organisms, microtubules are commonly found in locomotory appendages like cilia and flagella. In eukaryotic cells, microtubules form specialized extensions for moving fluid over the surface, like those found in cells lining the intestine.
Microtubules have two structurally similar globular protein subunits: α and β tubulins. In the cytosol, the α and β tubulins form a heterodimer....
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Microtubules in Cell Motility01:24

Microtubules in Cell Motility

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Microtubules are thick hollow cylindrical proteins that help form the cytoskeleton. Microtubules have varied roles in the cell. These filaments help form cellular appendages like cilia and flagella, which are responsible for locomotion. The cilia arise from basal bodies, separated from the main body by a membrane-like structure forming the transition zone. This zone is the gate for the entry of lipids and proteins, creating a unique composition of lipids and proteins in the ciliary membrane and...
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Cell Migration01:19

Cell Migration

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Cell migration is a process by which the cells move from one location to another, playing an essential role in embryological development, repair and regeneration, immune response, and metastasis. Cells migrate in response to chemical or mechanical signals generated by specific organs or tissues. The overall mechanism includes three steps - polarization, protrusion, and release. Polarization involves the formation of a distinct cell front and rear, which determines the direction of movement.
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Cell Migration01:09

Cell Migration

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Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.
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Role of Microtubules in Cell Wall Deposition01:02

Role of Microtubules in Cell Wall Deposition

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Microtubules are small hollow tubes in eukaryotic cells. The cell wall microtubules are polymerized dimers of two globular proteins, α-tubulin and β-tubulin, two globular proteins. With a diameter of about 25 nm, microtubules are the widest components of the cytoskeleton. They help the cell resist compression and provide a track along which vesicles move through the cell or pull replicated chromosomes to opposite ends of a dividing cell. Microtubules go through quick cycles of...
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Microtubules in cell migration.

Clare Garcin1,2, Anne Straube1,2

  • 1Centre for Mechanochemical Cell Biology, University of Warwick, Coventry CV4 7AL, U.K.

Essays in Biochemistry
|July 31, 2019
PubMed
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Microtubules are essential for directed cell migration, acting as tracks for transport and force generators. Their dynamics coordinate with signaling pathways to control cell movement during development and healing.

Keywords:
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Area of Science:

  • Cell Biology
  • Biophysics

Background:

  • Directed cell migration is fundamental for embryogenesis, wound healing, and immune responses.
  • Microtubules play a critical role in regulating cell motility through various mechanisms.

Purpose of the Study:

  • To summarize the diverse functions of microtubules in directed cell migration.
  • To elucidate how microtubule dynamics contribute to efficient and persistent cell movement.

Main Methods:

  • Literature review and synthesis of existing research on microtubule functions in cell migration.
  • Analysis of the interplay between microtubule dynamics, Rho GTPase signaling, and actin cytoskeleton.

Main Results:

  • Microtubules serve as tracks for intracellular transport, delivering components to the cell's leading edge.
  • They function as force generators and compressive elements, supporting cell protrusions.
  • Microtubule dynamics are coupled to Rho GTPase signaling, influencing actin polymerization and adhesion turnover.

Conclusions:

  • Microtubules are central regulators of directed cell migration, orchestrating complex processes.
  • The coordinated interplay between microtubules and other cellular components ensures efficient and directional cell movement.