ArticleScientific reports2017
Measurement of the magnetic moment of single Magnetospirillum gryphiswaldense cells by magnetic tweezers.
Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed.
- Many dynein teams collectively generate high forces during the transport of large organelles.Biophysical journal · 2026Article
- Image-based physical characterization of magnetotactic bacteria from an environmental sample.Microbiology spectrum · 2026Article
- Explicit analysis of magnetotactic bacteria motion reveals the length scaling of magnetic moments.Biophysical journal · 2025Article
- Tracing the U-turns: A new approach for calculating the magnetic moment of magnetotactic bacteria.Biophysical journal · 2025Article
- Updates on the Advantages and Disadvantages of Microscopic and Spectroscopic Characterization of Magnetotactic Bacteria for Biosensor Applications.Biosensors · 2025Review
- The Biomedical Limitations of Magnetic Nanoparticles and a Biocompatible Alternative in the Form of Magnetotactic Bacteria.Journal of functional biomaterials · 2025Review
- Magnetogenetics as a promising tool for controlling cellular signaling pathways.Journal of nanobiotechnology · 2024Review
- Propulsive cell entry diverts pathogens from immune degradation by remodeling the phagocytic synapse.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Propulsive cell entry diverts pathogens from immune degradation by remodeling the phagocytic synapse.bioRxiv : the preprint server for biology · 2023Article
- Collective magnetotaxis of microbial holobionts is optimized by the three-dimensional organization and magnetic properties of ectosymbionts.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Kinetics of phagosome maturation is coupled to their intracellular motility.Communications biology · 2022Article
- A Compass To Boost Navigation: Cell Biology of Bacterial Magnetotaxis.Journal of bacteriology · 2020Review
- Intrinsically Magnetic Cells: A Review on Their Natural Occurrence and Synthetic Generation.Frontiers in bioengineering and biotechnology · 2020Review
- Chemotaxis in external fields: Simulations for active magnetic biological matter.PLoS computational biology · 2019Article
- MamY is a membrane-bound protein that aligns magnetosomes and the motility axis of helical magnetotactic bacteria.Nature microbiology · 2019Article
- U-turn trajectories of magnetotactic cocci allow the study of the correlation between their magnetic moment, volume and velocity.European biophysics journal : EBJ · 2019Article
- Brownian motion near an elastic cell membrane: A theoretical study.The European physical journal. E, Soft matter · 2018Article
- Phagosomal transport depends strongly on phagosome size.Scientific reports · 2017Article
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Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Magnetospirillum gryphiswaldense is a helix-shaped magnetotactic bacterium that synthesizes iron-oxide nanocrystals, which allow navigation along the geomagnetic field. The bacterium has already been thoroughly investigated at the molecular and cellular levels. However, the fundamental physical property enabling it to perform magnetotaxis, its magnetic moment, remains to be elucidated at the single cell level. We present a method based on magnetic tweezers; in combination with Stokesian dynamics and Boundary Integral Method calculations, this method allows the simultaneous measurement of the magnetic moments of multiple single bacteria. The method is demonstrated by quantifying the distribution of the individual magnetic moments of several hundred cells of M. gryphiswaldense. In contrast to other techniques for measuring the average magnetic moment of bacterial populations, our method accounts for the size and the helical shape of each individual cell. In addition, we determined the distribution of the saturation magnetic moments of the bacteria from electron microscopy data. Our results are in agreement with the known relative magnetization behavior of the bacteria. Our method can be combined with single cell imaging techniques and thus can address novel questions about the functions of components of the molecular magnetosome biosynthesis machinery and their correlation with the resulting magnetic moment.
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