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Related Concept Videos

Other Unique Bacteria01:18

Other Unique Bacteria

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Magnetic bacteria exhibit a directed movement called magnetotaxis, driven by structures called magnetosomes. These magnetosomes consist of chains of magnetic particles made of either magnetite (Fe₃O₄) or greigite (Fe₃S₄) and are organized in a linear conformation by a protein scaffold within invaginations of the cell membrane. The bacteria align along the north–south magnetic field lines, much like a compass needle. They are typically microaerophilic or anaerobic...
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Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows that all magnets have two poles: one is labeled north (N) and the other south (S). Magnetic poles repel if they are alike and attract if unlike. Moreover, both poles of a magnet attract unmagnetized pieces of iron.
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Prokaryotic cells possess a variety of inclusions that play crucial roles in nutrient storage, metabolic processes, and environmental adaptation. These structures enable bacteria to thrive under fluctuating environmental conditions by storing essential resources and optimizing their metabolic efficiency.Carbon Storage: Poly-β-Hydroxybutyric Acid and Glycogen GranulesBacteria frequently store excess carbon in specialized granules. Poly-β-hydroxybutyric acid (PHB) granules are lipid...
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Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
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Organisms exhibit remarkable metabolic diversity, categorized based on how they acquire energy and carbon. These strategies enable survival in various ecological niches and are essential for maintaining energy flow and nutrient cycling within ecosystems.Energy and Carbon SourcesOrganisms are classified as phototrophs or chemotrophs based on energy acquisition. Phototrophs use light as their energy source, while chemotrophs rely on oxidizing chemical compounds. Further differentiation arises...
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In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
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Updated: Mar 16, 2026

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Magnetotactic bacteria and magnetosomes - Scope and challenges.

Jobin John Jacob1, K Suthindhiran1

  • 1Marine Biotechnology and Bioproducts Lab, School of Biosciences and Technology, VIT University, Vellore 632014, India.

Materials Science & Engineering. C, Materials for Biological Applications
|August 16, 2016
PubMed
Summary

Magnetotactic bacteria (MTB) use internally formed magnetic particles called magnetosomes for navigation. These magnetosomes offer superior properties for diverse scientific and medical applications.

Keywords:
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Area of Science:

  • Microbiology
  • Biophysics
  • Nanotechnology
  • Biomedicine

Background:

  • Organisms utilize geomagnetism for navigation, a phenomenon known as magnetoreception.
  • Magnetotactic bacteria (MTB) are microorganisms that possess internal magnets (magnetosomes) for orientation.
  • Magnetosomes are biomineralized magnetic nanoparticles with unique crystalline structures and magnetic properties.

Purpose of the Study:

  • To review the scope of magnetotactic bacteria (MTB) and their magnetosomes.
  • To discuss challenges in research and industrial applications of MTB and magnetosomes.
  • To highlight applications based on the magnetotactic behavior of MTB and magnetosomes.

Main Methods:

  • Review of existing literature on magnetotactic bacteria and magnetosomes.
  • Analysis of the properties and applications of biomineralized magnetic nanoparticles.
  • Discussion of research and industrial challenges.

Main Results:

  • MTB use magnetosomes for navigation towards oxic-anoxic interfaces.
  • Magnetosomes exhibit superior properties compared to chemically synthesized magnetic nanoparticles.
  • MTB and magnetosomes have potential applications across various scientific disciplines.

Conclusions:

  • Magnetotactic bacteria and their magnetosomes are significant research subjects due to their unique properties.
  • Further research is needed to overcome challenges in their industrial application.
  • The magnetotactic behavior of MTB and magnetosomes offers diverse application potential in modern science.