Articles tagged with Bacterial Dna
Researchers found that radiation-resistant bacteria like Deinococcus radiodurans are protected from protein damage by a chemical mechanism involving manganese ions. This new model of radiation toxicity highlights the importance of protein protection in bacterial survival, contradicting traditional views that prioritize DNA damage.
Scientists have discovered that anti-fungal drugs can kill the TB bacteria, potentially effective against emerging drug-resistant strains. The study found that chemicals called azoles target a specific enzyme in the TB bacterium, leading to its death.
Researchers at Yale University have identified key virulence genes in A. baumannii bacteria, which cause highly resistant infections in combat troops. The study's findings suggest new targets for antimicrobial drugs and provide insight into the evolution of bacterial virulence.
Researchers at Imperial College London have identified two key enzymes that help meningitis bacteria evade the body's immune system. The discovery could lead to novel treatments by disabling these enzymes and making the bacteria vulnerable to attack.
A study by Max-Planck-Gesellschaft scientists finds that bacteria Helicobacter pylori spread with humans out of Africa, following similar migration paths. The genetic diversity of H. pylori is larger than man's, but paves the way for analyzing its data to understand human history.
A recent study reveals that the bacteria causing most painful stomach ulcers has been present in humans since modern man migrated from Africa over 60,000 years ago. The research provides new insights into early human migration and offers a way to study the diversification of human populations.
A recent study found that human skin hosts a vast array of bacterial species, with 182 species identified, including 8% previously unknown. The study used advanced molecular methods to analyze skin samples from six healthy individuals and revealed a core set of bacteria present in everyone's skin.
New research by Rice University scientists reveals that horizontal gene transfer (HGT) contributes to the speed of evolution, allowing life forms to adapt faster. The study proposes a mathematical model that accounts for HGT and its impact on the dynamics of evolution.
Researchers discovered a new type of DNA parasite that can increase the spread of antibiotic-resistant bacteria. The 'stealth' plasmid produces a protein that helps it survive and thrive in bacteria, making it harder to eradicate with antibiotics.
A recent study analyzes the genome of Cytophaga hutchinsonii, a bacterium that efficiently breaks down cellulose. The research suggests a possible connection between motility and cellulose digestion, which could lead to more efficient conversion of cellulose into ethanol for bioenergy production.
A recent study conducted by scientists from the Lawrence Berkeley National Laboratory found an innovative DNA test to catalog airborne microbes. The research revealed a diverse bacterial population in Texas cities, which could aid in bioterrorism surveillance and climate change tracking.
Researchers developed a novel method to produce small chemicals from symbiotic bacteria found in sea squirts, which have anticancer properties. The ability to manipulate these chemicals using genetic pathways opens possibilities for developing new cancer and HIV treatments.
Researchers have created a new smart anti-microbial treatment called STAMP that can selectively target and kill cavity-causing bacteria without harming good bacteria. The treatment uses a specific pheromone to locate the bacteria and an anti-microbial bomb to eliminate it, offering a promising approach to preventing tooth decay.
Researchers found a self-sustaining community of bacteria that rely on radioactive uranium to convert water molecules into usable energy, living 2.8 kilometers below Earth's surface. The discovery expands Earth's biosphere and raises excitement about the potential for life on Mars.
Scientists found that the bacterium Carsonella ruddii has the fewest genes of any cell, with only 182 protein-coding genes in its tiny genome. This discovery provides new insights into bacterial evolution and suggests that some genes may have been transferred to the insect's genome.
Researchers have discovered a way to sort through large numbers of bacterial gene sequences by testing them in caterpillars, allowing pinpointing of virulence genes. The new technique, Rapid Virulence Annotation (RVA), is helping bridge the knowledge gap in post-genomic era.
Researchers have developed a technique to isolate bacteria that interact with ice, leading to the discovery of species with properties such as Ice Recrystallisation Inhibition (IRI) and temperature-modifying abilities. These findings hold potential for applications in industries like snow-making and waste-water purification.
Researchers found that Yersinia bacteria harbor a protein called YpkA, which mimics an enzyme and blocks the host cell's ability to change shape and move. This discovery sheds new light on the factors that make Yersinia a deadly disease-causing agent.
Scientists at the University of York have discovered a critical element in the mode of action of DNase colicins, which kill cells by destroying their DNA. Understanding this mechanism could lead to the development of new, targeted antibiotics.
New research published in Science reveals that specific bacteria present on gold grains precipitate gold from solution, providing a biological mechanism for gold formation. The study identified the bacterium Ralstonia metallidurans as responsible for this process, which has significant implications for the mineral exploration industry.
Researchers developed a vaccine using irradiated Listeria monocytogenes bacteria, providing better protection against disease than traditional heat-killed vaccines. The irradiated vaccine retained the ability to activate the immune system through Toll-like receptors, promoting long-term immunity.
Researchers have identified a common molecular machinery for initiating DNA replication in all three domains of life: Archaea, Bacteria, and Eukarya. This finding suggests that DNA replication is an ancient event that evolved millions of years ago.
Researchers discovered a key mechanism by which TUS stops the replisome in a directional manner. This finding has significant implications for bio- and nano-technology applications.
Researchers have discovered a bacteriophage with a structure similar to human rotavirus, providing new information on the formation of viral particles and genetic distinction. This finding sheds light on the evolutionary origins of viruses, which likely share common ancestors across species.
Bacteria have a unique immune system called H-NS that protects against foreign DNA, but can also enable the expression of disease-causing genes. This discovery has major implications for the biotech industry, which uses bacteria to produce recombinant proteins.
Researchers discovered that the glassy-winged sharpshooter insect has a surprising symbiosis with two bacteria, Baumannia cicadellinicola and Sulcia muelleri. The bacteria receive essential amino acids, while the insect receives vitamins and cofactors from them.
Researchers have developed a new technique to detect and identify wound bacteria, significantly reducing the time it takes for lab personnel to figure out what type of bacteria is present. This allows for more accurate treatment to begin sooner, which can help prevent antibiotic resistance.
A recent study found that bacteria can utilize DNA as a critical food source, enabling them to outcompete other microbes and survive longer. The study identified eight genes necessary for this process, known as nutritional competence, which could have applications in medical research and the development of genetic antibiotics.
Researchers have gained insights into the genetic mechanisms of Proteus mirabilis, a bacterium causing kidney stones and complicated urinary tract infections. The complete genome sequence, including 3,693 genes and 4.063 megabases of DNA, will help scientists identify potential targets for new vaccines.
Rice University researchers capture natural selection in a flask using bacteria G. stearothermophilus. The study reveals that only six populations with specific mutations can outcompete others, pointing to the development of a system to predict antibiotic resistance.
Researchers successfully removed up to 82,000 base pairs from E. coli's genome without compromising its functions, paving the way for more efficient production of useful proteins and drugs.
Researchers discovered a link between oral bacteria and preterm birth, finding Bergeyella bacteria in the amniotic fluid of pregnant women. This pilot study suggests that oral bacteria may play a role in premature deliveries, which can lead to health challenges for babies and increased medical costs.
A Mars meteorite containing tiny burrows has been discovered, sparking interest in the search for life beyond Earth. The discovery, published in Astrobiology journal, suggests that Martian rock formations may be similar to those created by bacteria on Earth.
Researchers led by Graham Walker discovered a mutant bacteria with a specific defect in the bluB gene involved in B12 synthesis. By analyzing mutations, they tracked molecular details of how bacteria provide nutrients to plants.
Researchers at UCSD have found that disease-causing Strep bacteria release an enzyme that degrades neutrophil DNA nets, allowing them to escape the immune system and spread in body tissues. This discovery could lead to new treatments by inhibiting this enzyme, making it easier for the immune system to clear the pathogen.
Scientists have sequenced the complete genomes of three emerging pathogens causing ehrlichiosis, a disease affecting humans, dogs, cattle, sheep, and other animals. The study identified new genes allowing bacteria to evade immune systems and adapt to new niches.
A study at the University of Texas M. D. Anderson Cancer Center found that Z-DNA, a twisted shape of DNA, can cause genetic instability and breaks in human cells, particularly in those with Burkitt's lymphoma. The research opens up a new field of inquiry into the role of DNA shape in genomic instability and cancer.
A team of biologists developed improved software to analyze virus structures, revealing new details about the Epsilon 15 virus that infects salmonella. The advancements enable scientists to observe previously invisible features, including non-symmetric components and a core with unknown function.
Researchers have made a breakthrough in understanding how viruses infect cells using cryoelectron microscopy and computational methods. The study reveals the importance of proteins beyond the surface shell in binding to host cells, injecting DNA, and packaging it during virus formation.
Scientists have successfully engineered lactic acid bacteria to produce a viricide that disables HIV, paving the way for potential use as a microbicide. The genetically modified bacteria will be tested in monkeys this summer, with human trials planned for three years.
Researchers have discovered that polyphosphate accelerates blood clotting and delays its breakdown, leading to longer-lasting clots. The Center for Hemostasis Research at the University of Illinois will continue to study this discovery to develop effective treatments for uncontrollable bleeding.
Researchers have discovered several new bacterial species associated with bacterial vaginosis (BV), a common infection in women. The study, published in the New England Journal of Medicine, could lead to improved detection and treatment methods.
Scientists discovered a bacterial defense mechanism that reduces nitric oxide levels in response to the toxin, allowing bacteria to fend off the body's defenses. The NorR protein plays a crucial role in this process, and researchers hope to develop new antibiotics by disrupting this mechanism.
A review by Stephen Gillespie and Philippe Gay finds no evidence of antibiotic resistance from GM crops being transferred to bacteria, which would be dwarfed by the impact of human antibiotics use. The authors conclude that while it's possible for transfer to occur, its contribution to antibiotic resistance is low.
Two DNA polymerases, Pol III and Pol IV, coordinate their action to cross obstacles in the replication process. Pol III copies DNA while proofreading for errors, but can stall if it encounters a problem, allowing Pol IV to take over.
Scientists at UCSD found that white blood cells increase production of protein HIF-1 in response to bacteria, stimulating antimicrobial compounds to kill invading organisms. Treating white blood cells with chemicals can enhance their bacterial killing ability.
The structure reveals new details about TLR3's binding site for double-stranded RNA and its potential role in detecting viral invaders. This breakthrough may help scientists understand the function of TLR proteins and identify potential therapeutic targets for diseases.
Researchers have found evidence of photosynthesis deep within the ocean, with green sulfur bacteria thriving near hydrothermal vents. This discovery expands our understanding of life's resilience and potential for existence on other planets.
Researchers have discovered a new strategy used by TB bacteria to resist fluoroquinolone antibiotics, which are often ineffective against multi-drug-resistant TB. The discovery also reveals that other disease-causing bacteria, such as Shigella and E. coli, have developed similar resistance mechanisms.
Research finds bacteria in subgingival plaques of periodontally diseased individuals are also present in their heart arteries, potentially causing inflammation and increasing heart attack risk. Maintaining good periodontal health is advised to prevent this potential effect.
Researchers propose that antibiotic-mediated DNA damage triggers a bacterial repair mechanism, increasing the likelihood of mutations leading to antibiotic resistance. Blocking this pathway could provide a promising strategy for controlling the spread of superbugs.
Differences in UV perception allow songbirds to signal with private communication, while chestnut trees go silent during winter due to circadian clock gene regulation. A fungus has an energy-generating mechanism similar to bacteria, enabling it to harness light for proton pumping
Researchers analyzed whale skeletons and farm soil using metagenomics, discovering specialized bacteria that thrive in these environments. The study provides a new understanding of the diversity of microbial life on earth, with potential applications in fields such as agriculture and medicine.
Researchers discovered anammox bacteria in Atlantic Ocean, removing ammonium and releasing nitrogen gas, contradicting decades-long theory. The new findings have significant implications for the global nitrogen cycle, models of climate predictions, and marine ecosystems.
Kao's research uses DNA microarrays to measure gene expression and identify a mutation that increases the production of erythromycin by five days. By recreating this mutation, she aims to develop new antibiotic-producing bacteria, revolutionizing the field of antibiotic synthesis.
Researchers have developed a miniaturized lab that can detect HIV and bacteria in saliva using a portable oral swab kit. The device analyzes samples quickly and accurately, making it useful for rapid response situations such as bioterrorism incidents or emergency room emergencies.
Researchers at Michigan State University have found significant differences in genetic libraries among bacteria strains previously thought to be similar. The study suggests that current definitions may need revision as many bacteria share as few as 65% of their genes, highlighting the importance of ecological distinctiveness.
Researchers found that microbial diversity increases as the area they occupy increases, suggesting a universal law common to all domains of life. The study has significant implications for understanding ecology and biodiversity of tiny organisms.
Scientists found significant differences in Salmonella and E. coli's use of a gene linked to processes that govern antibiotic resistance, altering their ability to survive in different environments. The study suggests that understanding such changes will help develop new treatments for disease-causing microorganisms.
Researchers discovered a new mechanism by which Helicobacter pylori bacteria can stick to stomach cells, allowing them to survive a strong immune response. By recombining DNA from two related genes, the bacteria can create a functional BabA gene, enabling it to bind tightly to Lewis B receptors.