Results 21 to 30 of about 3,992 (192)

Magnetotactic Bacteria and Magnetosomes: Basic Properties and Applications

Magnetochemistry, 2021
Magnetotactic bacteria (MTB) belong to several phyla. This class of microorganisms exhibits the ability of magneto-aerotaxis. MTB synthesize biominerals in organelle-like structures called magnetosomes, which contain single-domain crystals of magnetite ...
Kamil G. Gareev, Denis S. Grouzdev, Petr V. Kharitonskii, Andrei Kosterov, Veronika V. Koziaeva, Elena S. Sergienko, Maxim A. Shevtsov   +6 more
doaj   +1 more source

Collective Response and Navigation Dynamics of Magnetospirillum gryphiswaldense under Rotating Magnetic Fields. [PDF]

Small
The dynamics of Magnetospirillum gryphiswaldense under rotating magnetic fields are explored through the analysis of thousands of trajectories. The study reveals distinct navigation modes and transitions influenced by field strength and frequency. Directionality, alignment, and swimming behavior are examined to uncover how these microorganisms respond ...
Villanueva D, Gubieda AG, García-Arribas A, Abad-Diaz-De-Cerio A, Feuchtwanger J, de Cos D, Fdez-Gubieda ML.   +6 more
europepmc   +2 more sources

Magnetic Properties of Bacterial Magnetosomes Produced by Magnetospirillum caucaseum SO-1

Microorganisms, 2021
In this study, the magnetic properties of magnetosomes isolated from lyophilized magnetotactic bacteria Magnetospirillum caucaseum SO-1 were assessed for the first time.
Kamil G. Gareev, Denis S. Grouzdev, Peter V. Kharitonskii, Demid A. Kirilenko, Andrei Kosterov, Veronika V. Koziaeva, Vladimir S. Levitskii, Gabriele Multhoff, Elina K. Nepomnyashchaya, Andrey V. Nikitin, Anastasia Nikitina, Elena S. Sergienko, Stanislav M. Sukharzhevskii, Evgeniy I. Terukov, Valentina V. Trushlyakova, Maxim Shevtsov   +15 more
doaj   +1 more source

Controlled biomineralization of magnetite (Fe₃O₄) by Magnetospirillum gryphiswaldense [PDF]

, 2008
Results from a study of the chemical composition and micro-structural characteristics of bacterial magnetosomes extracted from the magnetotactic bacterial strain Magnetospirillum gryphiswaldense are presented here.
Bauerlein, Bazylinski, Bazylinski, C. Moisescu, D. Tobler, I. Ardelean, L. G. Benning, Lang, Lowenstam, Meldrum, Posfai, S. Bonneville, Weiner   +12 more
core   +2 more sources

Applications of magnetosomes synthesized by magnetotactic bacteria and magnetosomes in medicine: A mini-review.

Frontiers in Bioengineering and Biotechnology, 2014
Magnetotactic bacteria belong to a group of bacteria that synthesize iron oxide nanoparticles covered by biological material that are called magnetosomes.
Edouard eAlphandéry, Edouard eAlphandéry   +1 more
doaj   +1 more source

Elastic Properties of Magnetosome Chains [PDF]

Biophysical Journal, 2015
Magnetotactic bacteria swim and orient in the direction of a magnetic field thanks to the magnetosome chain, a cellular ‘compass needle’ that consists of a string of vesicle-enclosed magnetic nanoparticles aligned on a cytoskeletal filament. Here we investigate the mechanical properties of such a chain, in particular the bending stiffness. We determine
Bahareh Kiani, Damien Faivre, Stefan Klumpp   +2 more
openaire   +3 more sources

Magnetite Crystal Orientation in Magnetosome Chains [PDF]

Advanced Functional Materials, 2014
One‐dimensional magnetic nanostructures have magnetic properties superior to non‐organized materials due to strong uniaxial shape anisotropy. Magnetosome chains in magnetotactic bacteria represent a biological paradigm of such magnet, where magnetite crystals synthesized in organelles called magnetosomes are arranged into linear chains. Two‐dimensional
André Körnig, Michael Winklhofer, Jens Baumgartner, Teresa Perez Gonzalez, Peter Fratzl, Damien Faivre   +5 more
openaire   +3 more sources

Genomic Expansion of Magnetotactic Bacteria Reveals an Early Common Origin of Magnetotaxis with Lineage-specific Evolution [PDF]

, 2018
The origin and evolution of magnetoreception, which in diverse prokaryotes and protozoa is known as magnetotaxis and enables these microorganisms to detect Earth’s magnetic field for orientation and navigation, is not well understood in evolutionary ...
A Gurevich, A Stamatakis, A Stamatakis, ACV Araujo, Andrew P. Roberts, B Ji, C Esser, C Jogler, C Jogler, C Jogler, CT Lefèvre, CT Lefèvre, CT Lefèvre, CT Lefèvre, CT Lefèvre, D Darriba, DA Bazylinski, DD Kang, Dennis A. Bazylinski, DH Parks, EF DeLong, EK Field, F Abreu, F Abreu, Greig A. Paterson, H Fullerton, HH Lin, I Letunic, JB Rioux, JL Kirschvink, K Anantharaman, K Laufer, K Tamura, KT Konstantinidis, LC Benjamin, LM Rodriguez-R, M Winklhofer, MN Price, MP Ferla, N Segata, R Uebe, RB Frankel, RC Edgar, S Kolinko, S Kolinko, S Kolinko, S Nurk, S Schübbe, S Spring, S Spring, S Ullrich, SF Altschul, SL Simmons, T Sakaguchi, T Seemann, V Morillo, W Li, W Lin, W Lin, W Lin, W Lin, W Lin, W Lin, W Lin, Wei Lin, Wensi Zhang, Xiang Zhao, Yongxin Pan   +67 more
core   +3 more sources

Structure prediction of magnetosome-associated proteins [PDF]

Frontiers in Microbiology, 2014
Magnetotactic bacteria (MTB) are Gram-negative bacteria that can navigate along geomagnetic fields. This ability is a result of a unique intracellular organelle, the magnetosome. These organelles are composed of membrane-enclosed magnetite (Fe3O4) or greigite (Fe3S4) crystals ordered into chains along the cell.
Nudelman, Hila, Zarivach, Raz
openaire   +4 more sources

Magnetosome Gene Duplication as an Important Driver in the Evolution of Magnetotaxis in the Alphaproteobacteria [PDF]

, 2019
The evolution of microbial magnetoreception (or magnetotaxis) is of great interest in the fields of microbiology, evolutionary biology, biophysics, geomicrobiology, and geochemistry.
Bazylinski, Dennis A., Du, Haijian, Lin, Wei, Pan, Hongmiao, Pan, Yongxin, Wu, Long-Fei, Xiao, Tian, Zhang, Weijia, Zhang, Wensi, Zhang, Wenyan   +9 more
core   +4 more sources