Polycrystalline texture causes magnetic instability in greigite [PDF]
Scientific Reports, 2021 Magnetic stability of iron mineral phases is a key for their use as paleomagnetic information carrier and their applications in nanotechnology, and it critically depends on the size of the particles and their texture.
Barbara Lesniak +6 more
doaj +7 more sources
Rescuing Nucleus Pulposus Cells From Senescence via Dual‐Functional Greigite Nanozyme to Alleviate Intervertebral Disc Degeneration [PDF]
Advanced Science, 2023 High levels of reactive oxygen species (ROS) lead to progressive deterioration of mitochondrial function, resulting in tissue degeneration. In this study, ROS accumulation induced nucleus pulposus cells (NPCs) senescence is observed in degenerative human
Yu Shi +12 more
doaj +2 more sources
A Novel Isolate of Spherical Multicellular Magnetotactic Prokaryotes Has Two Magnetosome Gene Clusters and Synthesizes Both Magnetite and Greigite Crystals [PDF]
Microorganisms, 2022 Multicellular magnetotactic prokaryotes (MMPs) are a unique group of magnetotactic bacteria that are composed of 10–100 individual cells and show coordinated swimming along magnetic field lines.
Kaixuan Cui +8 more
doaj +2 more sources
Production of carbon-containing pyrite spherules induced by hyperthermophilic Thermococcales: a biosignature? [PDF]
Frontiers in Microbiology, 2023 Thermococcales, a major order of hyperthermophilic archaea inhabiting iron- and sulfur-rich anaerobic parts of hydrothermal deep-sea vents, are known to induce the formation of iron phosphates, greigite (Fe3S4) and abundant quantities of pyrite (FeS2 ...
Chloé Truong +8 more
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Quantification of Organic Carbon Sequestered by Biogenic Iron Sulfide Minerals in Long-Term Anoxic Laboratory Incubations [PDF]
Frontiers in Microbiology, 2022 Organic carbon sequestration in sedimentary environments controls oxygen and carbon dioxide concentrations in the atmosphere. While minerals play an important role in the preservation of organic carbon, there is a lack of understanding about the ...
Nader Nabeh +2 more
doaj +2 more sources
Desulfovibrio desulfuricans AY5 Isolated from a Patient with Autism Spectrum Disorder Binds Iron in Low-Soluble Greigite and Pyrite [PDF]
Microorganisms, 2021 The sulphate-reducing bacteria (SRB) of genus Desulfovibrio are a group of prokaryotes associated with autism spectrum disorders (ASD). The connection between the elevated numbers of Desulfovibrio in the gut of children with ASD compared with healthy ...
Olga V. Karnachuk +9 more
doaj +2 more sources
Periplasmic Bacterial Biomineralization of Copper Sulfide Nanoparticles [PDF]
Advanced Science, 2022 Metal sulfides are a common group of extracellular bacterial biominerals. However, only a few cases of intracellular biomineralization are reported in this group, mostly limited to greigite (Fe3S4) in magnetotactic bacteria.
Yeseul Park +10 more
doaj +2 more sources
Younger Dryas drought and IPO climate modulation during the Antarctic Cold Reversal in New Zealand [PDF]
Nature CommunicationsWe present an environmental magnetic record from a 6.1 metre sediment core from Lake Hayes, Te Waipounamu, South Island, New Zealand that spans the last c. 16.5 kyr and contains a logical progression of climate events.
Christian Ohneiser +4 more
doaj +2 more sources
A network of coiled-coil and actin-like proteins controls the cellular organization of magnetosome organelles in deep-branching magnetotactic bacteria [PDF]
Nature CommunicationsMagnetotactic Bacteria (MTB) are a diverse group of microorganisms that use magnetosomes, organelles composed of magnetite or greigite, to navigate along geomagnetic fields.
Virginia V. Russell +4 more
doaj +2 more sources
Isolation and cultivation of a novel freshwater magnetotactic coccus FCR-1 containing unchained magnetosomes [PDF]
Communications BiologyMagnetotactic bacteria are ubiquitous aquatic prokaryotes that have the ability to biomineralize magnetite (Fe3O4) and/or greigite (Fe3S4) nanoparticles called magnetosomes. Magnetotactic cocci belonging to the class “Ca.
Hirokazu Shimoshige +10 more
doaj +2 more sources