Articles tagged with Archaea
A new study reveals that deep-sea microbes like Nitrosopumilus maritimus can adapt to warmer, nutrient-poor waters, maintaining their role in nitrogen cycling and primary production. This finding suggests that these microbes may play an important role in reshaping ocean-nutrient distribution in a changing climate.
Scientists from the University of Texas at Austin have solved the mystery of how complex life evolved. The discovery suggests that eukaryotes arose when an Asgard archaeon developed a symbiotic relationship with an alphaproteobacterium, which led to the evolution of mitochondria and oxygen-based energy metabolism.
A new study reveals that ammonia-oxidizing archaea rely on urea as a nitrogen source, enabling them to flourish in open ocean waters. This discovery challenges existing understanding of nitrification rates and highlights the crucial role of urea in sustaining ocean productivity.
Researchers discovered that one microorganism can live with a bit of ambiguity in its genetic code, synthesizing two different proteins seemingly at random. This finding contradicts a long-held dogma and has implications for future disease therapies, including treating diseases caused by premature stop codons.
A new study reveals that ancient microbes like Asgard archaea may have played a crucial role in the evolution of the cytoskeleton. The researchers discovered two proteins, FtsZ1 and FtsZ2, which behave differently and may represent an intermediate stage in the development of modern cytoskeletal networks.
Researchers identified peptidoglycan hydrolases in archaea that kill bacteria, highlighting the importance of surveying diverse microbes to discover new antimicrobials. These proteins were found in 5% of surveyed archaeal species and show promise as novel antibacterial compounds.
Researchers at the University of Pennsylvania used AI to identify previously unknown compounds in Archaea that could fuel the development of next-generation antibiotics. The study, published in Nature Microbiology, found that 93% of the identified archaeasins demonstrated antimicrobial activity against drug-resistant bacteria.
LMU researchers recreated the first metabolic process of life on Earth, using iron and sulfur reactions to produce energy. The single-celled organism Methanocaldococcus jannaschii grew exponentially, utilizing hydrogen gas as an energy source.
Researchers have found a previously unknown group of microbes, known as Asgard archaea, which possess structures similar to those found in eukaryotic cells. These discoveries suggest that Asgard archaea may be the missing link between archaea and eukaryotes, challenging our current understanding of the three domains of life.
Ancient bacteria can respire carbon dioxide and hydrogen into acetic acid to produce ATP. A new mechanism involving sodium ions is activated when acetic acid is produced, driving a molecular turbine that generates energy.
Researchers at Hokkaido University have successfully cultivated an ultrasmall bacterial strain that parasitizes methanogenic archaea, inhibiting their growth. This discovery represents the first successful cultivation of such bacteria and proposes a new phylum Minisyncoccota, advancing our understanding of microbial ecology.
Scientists have developed a simple test that induces chemotactic motility in microbes, which could be a strong indicator of life. The test uses L-serine to attract microorganisms and has the potential to detect life on Mars and beyond.
Scientists have characterized enzymes involved in the degradation of ethane, a process that plays a crucial role in the biological filter at marine seeps. The study reveals a key aspect of the ethane-degrading microbes and their ability to adapt to different environments.
A new study reveals that a giant meteorite impact, equivalent to four Mount Everests, triggered a tsunami that mixed ocean debris and heated the atmosphere. This led to a rapid recovery of bacterial life, with iron-metabolizing bacteria flourishing in its wake.
Two proteins, viperins and argonautes, play important roles in human immunity, originating from Asgard archaea. These defense systems have been passed down for billions of years, providing a crucial line of defense against viruses.
Researchers discovered a new type of parasitic behavior in ancient Antarctic archaea, which can kill their hosts and impact ecosystem balance. The study provides insights into these unique microorganisms' role in supporting Earth's ecosystems and holds promise for biotechnological applications.
Researchers redefine our understanding of archaea, microbial ancestors to humans from two billion years ago, by showing how they use hydrogen gas. This simple strategy has allowed them to thrive in hostile environments.
Researchers discovered that certain archaea parasites selectively consume lipids from their host, altering its membrane structure. This change enables the parasite to survive while also affecting the host's response to environmental changes.
The study reveals that rod shapes are crucial for effective swimming, enabling microbes to navigate their environments efficiently. Advanced microscopy visualized the behavior of proteins inside the cell, confirming the importance of specific proteins in shifting cell shape.
Researchers found that extracellular vesicles transport RNA molecules between haloarchaea, enabling communication and gene regulation across microbial populations. A small GTPase similar to eukaryotic cells drives this process, suggesting an early evolutionary origin.
Researchers analyzed dolomite rocks and found a high proportion of C-13, indicating strong methane formation by microorganisms in water with low sulphate content. The sediment's chemical development is controlled by crater floor cooling and water supply, not climatic changes.
Researchers use molecular dating approach to estimate moment of LUCA's split into bacteria and archaea, as well as eukaryotes' emergence. The study reveals archaea are younger than previously thought, with some potentially living hidden on Earth.
Researchers discovered that extracellular cytochrome nanowires are widespread in prokaryotic microbes, including both bacteria and archaea. The findings suggest that these nanowires, composed of a long chain of cytochrome proteins, play a crucial role in microbial metabolism by facilitating efficient electron transfer.
Researchers have discovered that eukaryotes, including plants, animals, and fungi, share a common ancestor among the Asgards. The team identified a newly described order called the Hodarchaeales as the closest microbial relative to all complex life forms on the tree of life.
Researchers identified a Pcc1-like protein in archaeon Sulfolobus islandicus, suggesting it's a homolog of eukaryotic Gon7. The study suggests archaeal KEOPS complex functions independently of t6A modification and supports the archaeal origin of Eukaryotes theory.
Archaea of the genus Candidatus Alkanophaga use variants of methyl-coenzyme M reductase to degrade liquid petroleum alkanes at high temperatures. Bacteria of the genus Thermodesulfobacterium form consortia with archaea, facilitating degradation and contributing to the global carbon cycle.
Soil archaea in a warming climate become less diverse and more predictable, according to a long-term experiment led by Jizhong Zhou. The study found that experimental warming altered the community structure of soil archaea, reducing their taxonomic and phylogenetic diversity.
Researchers identified hundreds of microorganisms associated with plant roots and soil, showing potential for developing biological substitutes for phosphorus-based fertilizers. The discovery highlights the importance of microbial communities in supplying essential nutrients like nitrogen.
A new study by Portland State University researchers found that deep-sea microorganisms thrive in high-temperature environments and exhibit a staggering level of diversity, with over 500 new genera discovered. The microbes also rely on each other for survival through metabolic handoffs, revealing a complex interdependence.
Researchers at the University of Vienna and ETH Zurich have successfully cultivated a representative of the Asgard archaea, a group believed to be the closest relatives of eukaryotes. The newly developed model organism, Lokiarchaeum ossiferum, exhibits unique cellular characteristics, including an extensive cytoskeleton and complex cel...
A new study reveals that only a small fraction of marine microorganisms consume oxygen and release carbon dioxide, with less than three percent accounting for up to a third of the process. This discovery has significant implications for our understanding of the ocean's carbon cycle.
Researchers discovered Borgs, DNA packages that supercharge methane-eating microbes' metabolic rate. These genetic elements play a role in balancing atmospheric methane levels by encoding cellular machinery for methane consumption.
Researchers used advanced imaging techniques to understand the structure of bacterial propellers, which are made of a single protein. The study reveals that bacteria push themselves forward by coiling these appendages into corkscrew shapes, and that similar structures have evolved independently in archaea.
Researchers discovered new viruses infecting Asgard archaea, which may hold clues to the origin of complex life. The viruses share features with both prokaryotic and eukaryotic viruses, offering a new perspective on viral eukaryogenesis.
Researchers have reconstructed what life was like for some of Earth's earliest organisms using light-capturing proteins in living microbes. The findings could help recognize signs of life on other planets with atmospheres similar to ancient Earth.
A recent study by Indiana University researchers found that the structure of DNA storage in archaea affects its evolution rate. The study discovered that compacted DNA compartments change at a faster rate than less compacted ones. This discovery has potential impacts on research on genetic diseases like cancer.
Researchers at the Center for Genomic Regulation (CRG) found that chromatin, a genetic architecture that protects DNA and regulates gene expression, originated in ancient microbes between 1-2 billion years ago. This eukaryotic innovation has been essential for life since its emergence.
Researchers found that short-term cover crop use cannot reverse decades of soil microbial dynamics in response to unsustainable practices. Long-term fertilization disrupted nitrogen cycling communities, while cover crops enhanced biodiversity but had both positive and negative effects on soil microbes.
Eukaryotes emerged in an anoxic environment in the ocean, and their mitochondria-bearing cells likely resulted from a merger between archaea and bacteria. This finding contradicts the long-held view that oxygenation of Earth's surface environment led to eukaryogenesis.
Researchers have identified Velamenicoccus archaeovorus, an ultramicrobacterium that devours Methanosaeta cells in sewage treatment plants, leading to a new understanding of biomass conversion and recycling in deep sediments. The giant protein encoded by the gene enables it to dissolve cells.
Researchers analyzed expanded genetic markers to estimate evolutionary distance between Archaea and Bacteria, finding a long branch length that separates the two domains. The study suggests that conventional methods may underestimate true branch length and diversity of Archaea.
Seagrasses form methane from methylated compounds, which persist in plant tissue for decades, contributing to greenhouse gas emissions. Methane production is highly efficient and robust against environmental stresses in seagrass meadows.
Researchers have discovered a new type of tiny propeller used by archaea, with implications for human health and technology. The study found that the filament is made up of thousands of copies of two alternating proteins, enabling it to move and propel the cell at high speeds.
A team of scientists has discovered that the enzyme DNA topoisomerase VI plays a critical role in removing chromosome tangles in plants, which may lead to new antimalarial drug targets. The study provides unprecedented insight into the mechanism of action of this enzyme and its potential applications in plant breeding.
Researchers have discovered that certain microorganisms, such as Nitrosopumilus maritimus, can produce oxygen in the absence of sunlight, possibly deep below the ocean surface. These microbes play a crucial role in the nitrogen cycle and remove bioavailable nitrogen from the environment.
Researchers have successfully cultivated an archaeon called Methanoliparia from an oil production facility, which can convert oil into methane and carbon dioxide on its own. The microbe's unique genetic make-up gives it the ability to break down various hydrocarbons and activate enzymes that produce methane.
Researchers developed a kinetic hypothesis governing the evolution of the Last Universal Common Ancestor (LUCA) based on simulation experiments. They discovered a kinetic factor that governs the flow of chemical reactions in the TCA cycle, validating their hypothesis for deep-branching bacteria and archaea.
Researchers discovered that certain microorganisms can form elemental carbon without high temperatures and pressures, challenging current scientific understanding. The formation of this carbon is believed to be linked to the symbiotic relationship between archaea and their partners.
Researchers used evolutionary 'time travel' to study an ancient enzyme from archaea, finding a universal NTP binding motif that could be used for novel enzyme design. The study also revealed how the human version of the enzyme evolved over time.
A single archaeal enzyme can produce a wide range of natural and unnatural cardiolipins, as well as other phospholipids. This promiscuous enzyme has potential biotechnological applications for the production of self-designed membranes.
Researchers uncover novel cell division mechanism in Haloferax volcanii, a microorganism from the archaea realm. This discovery offers new insights into the evolution of life and potential biotechnological tools for delivering vaccines or drugs.
A team of scientists identified a new group of microbes, Brockarchaeota, that help break down decaying plants without producing methane. This discovery has significant implications for understanding climate change and the global carbon cycle, as these microbes recycle carbon without emitting greenhouse gases.
Researchers at Aarhus University have discovered that a part of the CRISPR-Cas system originated from toxin genes in bacteria and archaea, providing new insights into its evolutionary process. The study reveals an ongoing battle between microorganisms and viruses, with the discovery of anti-CRISPR proteins blocking the immune system.
The Undinarchaeota, a previously unknown phylum of aquatic Archaea, have been found to likely depend on partner organisms for growth, while also conserving energy through fermentation. Their discovery provides new insights into the diversity and evolutionary history of Archaea.
A new consensus statement by 119 microbiologists proposes updating the International Code of Nomenclature of Prokaryotes to include uncultivated bacteria and archaea represented by DNA sequence information. This would enable researchers to create a unified list of all discovered species and implement universal quality standards for nam...
Marine microbes, specifically thaumarchaea, play a crucial role in recycling carbon and phosphorus from marine algae. They fix approximately 3 moles of carbon for every 10 moles of ammonia oxidized, fixing roughly 3-fold higher rates than previously assumed.
The study reveals that Asgard archaea, particularly the newly identified phylum Gerdarchaeota, are involved in degrading various substrates such as amino acids and ethanol. They also participate in aerobic respiration, converting substrates into acetyl-CoA.
Researchers at the Max Planck Institute for Marine Microbiology have discovered a new microbe, Ethanoperedens thermophilum, that eats ethane and grows faster than previously known microbes. The discovery sheds light on the mechanism of ethane degradation and its potential for biotechnological applications.
Researchers discovered a novel light-sensitive protein in Asgard archaea that functions as an inward proton pump, opening possibilities for controlling pH levels in cells or microorganisms with light. This finding could lead to the development of new biomolecular tools and applications in optogenetics.
Researchers from Dartmouth College used an acid-loving microbe to improve the accuracy of past climate records by studying its response to food and energy availability. The findings suggest that factors other than temperature can influence the membranes of single-celled archaea, adding complexity to paleoclimate studies.