Results 11 to 20 of about 1,426 (154)

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.
Hila eNudelman, Raz eZarivach
doaj   +4 more sources

Comparing Paleointensity Recording Efficiencies of Detrital and Biogenic Magnetite by Deposition Experiments With Synthetic Sediments

Geochemistry, Geophysics, Geosystems
Marine sediments contain magnetic mineral particles of detrital, biogenic and authigenic origin that record changes in the direction and intensity of the geomagnetic field over geological time.
Kuang He, Huafeng Qin, Sophie C. Roud, Zhaoxia Jiang, Menghan Li, Wenhui Li, Yu‐An Du, Sanzhong Li, Tilo vonDobeneck   +8 more
doaj   +2 more sources

A Two‐Protein Chemoreceptor Complex Regulates Oxygen Thresholds in Bacterial Magneto‐Aerotaxis

Advanced Science
Bacteria in changing environments rely on motility and sensory mechanisms to locate optimal conditions. This process depends on specialized chemoreceptors to sense environmental stimuli.
Julian Herz, Carina Weigel, Leonie Scheder, Raz Zarivach, Itay Algov, Yonatan Chemla, Felix Popp, Cornelius Riese, Mohammad A. Charsooghi, Lital Alfonta, Michael M. Meijler, Dirk Schüler, Damien Faivre, Daniel Pfeiffer   +13 more
doaj   +2 more sources

Characterization and Phylogenetic Analysis of a Novel Uncultivated Magnetotactic Coccus Harbouring Multi-Chain Magnetosomes. [PDF]

Environ Microbiol Rep
A novel marine magnetotactic coccus, strain HHB‐1, was isolated from intertidal sediments in Houhai Bay, China. HHB‐1 cells are large coccoid–ovoid bacteria that contain multiple chains of prismatic magnetite magnetosomes and conspicuous Ca/Mg‐rich polyphosphate granules.
Che Y, Zhang W, Dong Y, Liu M, Xiao T, Zhang JY, Pan H.   +6 more
europepmc   +2 more sources

Magnetosomes and Magnetosome Mimics: Preparation, Cancer Cell Uptake and Functionalization for Future Cancer Therapies [PDF]

Pharmaceutics, 2021
Magnetic magnetite nanoparticles (MNP) are heralded as model vehicles for nanomedicine, particularly cancer therapeutics. However, there are many methods of synthesizing different sized and coated MNP, which may affect their performance as nanomedicines.
Taher, Zainab, Legge, Christopher, Winder, Natalie, Lysyganicz, Pawel, Rawlings, Andrea, Bryant, Helen, Muthana, Munitta, Staniland, Sarah   +7 more
openaire   +5 more sources

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

Improved methods for mass production of magnetosomes and applications: a review

Microbial Cell Factories, 2020
Magnetotactic bacteria have the unique ability to synthesize magnetosomes (nano-sized magnetite or greigite crystals arranged in chain-like structures) in a variety of shapes and sizes.
Abdul Basit, Jiaojiao Wang, Fangfang Guo, Wei Niu, Wei Jiang   +4 more
doaj   +1 more source

Application of Magnetosomes in Magnetic Hyperthermia [PDF]

Nanomaterials, 2020
Nanoparticles, specifically magnetosomes, synthesized in nature by magnetotactic bacteria, are very promising to be usedin magnetic hyperthermia in cancer treatment. In this work, using the solution of the stochastic Landau–Lifshitz equation, we calculate the specific absorption rate (SAR) in an alternating (AC) magnetic field of assemblies of ...
Nikolai A. Usov, Elizaveta M. Gubanova
openaire   +4 more sources

A genetic strategy for probing the functional diversity of magnetosome formation. [PDF]

PLoS Genetics, 2015
Model genetic systems are invaluable, but limit us to understanding only a few organisms in detail, missing the variations in biological processes that are performed by related organisms.
Lilah Rahn-Lee, Meghan E Byrne, Manjing Zhang, David Le Sage, David R Glenn, Timothy Milbourne, Ronald L Walsworth, Hojatollah Vali, Arash Komeili   +8 more
doaj   +1 more source

Genome-Wide Identification of Essential and Auxiliary Gene Sets for Magnetosome Biosynthesis in Magnetospirillum gryphiswaldense

mSystems, 2020
Magnetotactic bacteria (MTB) stand out by their ability to manufacture membrane-enclosed magnetic organelles, so-called magnetosomes. Previously, it has been assumed that a genomic region of approximately 100 kbp, the magnetosome island (MAI), harbors ...
Karen T. Silva, Margarete Schüler, Frank Mickoleit, Theresa Zwiener, Frank D. Müller, Ram Prasad Awal, Alfons Weig, Andreas Brachmann, René Uebe, Dirk Schüler   +9 more
doaj   +1 more source