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Related Concept Videos

Assembly of Complex Microtubule Structures01:32

Assembly of Complex Microtubule Structures

Complex microtubule structures are present in resting cells and in dividing cells. In resting cells, they are responsible for maintaining the cellular architecture, tracks for intracellular transport, positioning of organelles, assembly of cilia and flagella. They mediate the bipolar spindle assembly for chromosomal segregation and positioning of the cell division plate in dividing cells. The formation of microtubule complex structures depends on the cell type, cell stage, and cell function.
Microtubules01:35

Microtubules

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.
Microtubules01:18

Microtubules

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. These αβ-heterodimers...
Assembly of Cytoskeletal Filaments01:18

Assembly of Cytoskeletal Filaments

Cytoskeletal filaments are polymeric forms of smaller protein subunits. However, individual cytoskeletal filaments may easily disassemble or associate with other similar filaments to form rigid structures. Microfilaments, made of actin monomers, rely on actin-binding proteins to form bundles and create networks of individual actin filaments. Microtubules rely on microtubule-associated proteins (MAPs) to form sturdy cylindrical structures. However, the proteins involved in forming complex...
Microtubule Formation01:23

Microtubule Formation

Microtubules are dynamic structures that undergo continuous assembly and disassembly. They originate from specialized multi-protein complexes known as microtubule organizing centers or MTOCs. Within the MTOC, the point of origin of the microtubule is known as the minus end, while the end radiating outward is the plus end. Microtubules serve two primary functions — the organization of spindle complexes to separate sister chromatids during mitotic or meiotic cell division and the formation of...

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Updated: May 11, 2026

DNA Nanotubes as a Versatile Tool to Study Semiflexible Polymers
08:00

DNA Nanotubes as a Versatile Tool to Study Semiflexible Polymers

Published on: October 25, 2017

Nanotubes.

C N Rao1, B C Satishkumar, A Govindaraj

  • 1Chemistry and Physics of Materials Unit and CSIR Centre of Excellence in Chemistry, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560 064, India. cnrrao@jncasr.ac.in

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry
|May 23, 2013
PubMed
Summary
This summary is machine-generated.

Carbon nanotubes, discovered in 1991, exhibit unique properties for applications in nanoelectronics and hydrogen storage. Research explores their synthesis, structure, and diverse potential uses.

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Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures
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Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures

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DNA Nanotubes as a Versatile Tool to Study Semiflexible Polymers
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Detection and Quantification of Tunneling Nanotubes Using 3D Volume View Images
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Detection and Quantification of Tunneling Nanotubes Using 3D Volume View Images

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Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures
09:23

Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures

Published on: July 2, 2012

Area of Science:

  • Nanotechnology
  • Materials Science
  • Chemistry

Background:

  • Carbon nanotubes (CNTs) emerged following fullerene synthesis.
  • Intensive research since 1991 highlights their unique structural features and properties.
  • Potential applications span nanoelectronics, displays, and hydrogen storage.

Purpose of the Study:

  • To comprehensively review carbon nanotube synthesis, structure, and formation mechanisms.
  • To present key electronic, mechanical, and hydrogen storage properties.
  • To explore modifications via doping and templating for novel nanostructures.

Main Methods:

  • Review of synthesis techniques for multi-walled and single-walled carbon nanotubes.
  • Analysis of characterization methods for structural and property determination.
  • Discussion of chemical modifications, including doping with boron and nitrogen.

Main Results:

  • Detailed examination of carbon nanotube formation mechanisms.
  • Presentation of electronic, mechanical, and hydrogen storage characteristics.
  • Demonstration of property modulation through doping and chemical manipulation.

Conclusions:

  • Carbon nanotubes possess significant potential for technological applications.
  • Chemical modifications offer pathways to tailor CNT properties for specific uses.
  • CNTs serve as versatile templates for creating other advanced nanostructures.