ArticleFaraday discussions2015
Biologically controlled synthesis and assembly of magnetite nanoparticles.
Article in Faraday discussions, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 39 citations in OpenAlex.
- Magnetizing Biotech-Advances in (In Vivo) Magnetic Enzyme Immobilization.Engineering in life sciences · 2025Review
- Magnetite Nanoparticle Assemblies and Their Biological Applications: A Review.Molecules (Basel, Switzerland) · 2024Review
- Effect of Magnetite Nanoparticles on Human Blood Components.Bulletin of experimental biology and medicine · 2024Article
- Article
- Rheology of a Nanopolymer Synthesized through Directional Assembly of DNA Nanochambers, for Magnetic Applications.Macromolecules · 2022Article
- Magnetotactic bacteria: concepts, conundrums, and insights from a novel in situ approach using digital holographic microscopy (DHM).Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2022Review
- Induction of Axonal Outgrowth in Mouse Hippocampal Neurons via Bacterial Magnetosomes.International journal of molecular sciences · 2021Article
- A Compass To Boost Navigation: Cell Biology of Bacterial Magnetotaxis.Journal of bacteriology · 2020Review
- The in vivo mechanics of the magnetotactic backbone as revealed by correlative FLIM-FRET and STED microscopy.Scientific reports · 2019Article
- The evolution of spherical cell shape; progress and perspective.Biochemical Society transactions · 2019Review
- Probing the Nanostructure and Arrangement of Bacterial Magnetosomes by Small-Angle X-Ray Scattering.Applied and environmental microbiology · 2019Article
- Calcium transport into the cells of the sea urchin larva in relation to spicule formation.Proceedings of the National Academy of Sciences of the United States of America · 2016Article
- Overproduction of Magnetosomes by Genomic Amplification of Biosynthesis-Related Gene Clusters in a Magnetotactic Bacterium.Applied and environmental microbiology · 2016Article
- From invagination to navigation: The story of magnetosome-associated proteins in magnetotactic bacteria.Protein science : a publication of the Protein Society · 2016Review
Corrections and comments
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Authors and funding
10 authors at 6 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Magnetite nanoparticles have size- and shape-dependent magnetic properties. In addition, assemblies of magnetite nanoparticles forming one-dimensional nanostructures have magnetic properties distinct from zero-dimensional or non-organized materials due to strong uniaxial shape anisotropy. However, assemblies of free-standing magnetic nanoparticles tend to collapse and form closed-ring structures rather than chains in order to minimize their energy. Magnetotactic bacteria, ubiquitous microorganisms, have the capability to mineralize magnetite nanoparticles, the so-called magnetosomes, and to direct their assembly in stable chains via biological macromolecules. In this contribution, the synthesis and assembly of biological magnetite to obtain functional magnetic dipoles in magnetotactic bacteria are presented, with a focus on the assembly. We present tomographic reconstructions based on cryo-FIB sectioning and SEM imaging of a magnetotactic bacterium to exemplify that the magnetosome chain is indeed a paradigm of a 1D magnetic nanostructure, based on the assembly of several individual particles. We show that the biological forces are a major player in the formation of the magnetosome chain. Finally, we demonstrate by super resolution fluorescence microscopy that MamK, a protein of the actin family necessary to form the chain backbone in the bacteria, forms a bundle of filaments that are not only found in the vicinity of the magnetosome chain but are widespread within the cytoplasm, illustrating the dynamic localization of the protein within the cells. These very simple microorganisms have thus much to teach us with regards to controlling the design of functional 1D magnetic nanoassembly.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.