Articles tagged with Bacterial Dna
Most mutations in Salmonella bacterium lead to very small negative effects on growth rate, similar for non-synonymous and synonymous mutations. The study challenges conventional views on how mutations affect organism survival.
Scientists discovered CRISPR/Cas, a bacterial immune system that protects against foreign DNA invasions. The system may help prevent antibiotic resistance in certain bacteria, benefiting industries like yogurt and probiotics.
Mitochondria power stations are crucial for complex cell evolution and innovation, enabling eukaryotes to accumulate more genes than bacteria. The tiny mitochondrial genome is essential for cell respiration, allowing cells to support a vast number of genes and proteins.
Research by Prof. Eshel Ben-Jacob suggests that bacteria can effectively control 'noise' in their environment and make decisions that benefit the entire colony. Bacteria's group decision-making processes can inform human decision-making, particularly in situations with multiple stakeholders.
A new study found low levels of bacteria in soils outside fields sprayed with swine manure, while internal soils showed higher nutrient levels but lower pathogen levels. The research suggests that manure management plans have been effective in reducing bacterial risks.
Researchers at Rice University studied bacteria in a competition for evolutionary dominance, finding specific genetic mutations that imparted physical advantages. These mutations were linked to increased resistance to temperature changes and protein misfolding, which may be related to human diseases like Alzheimer's.
A new method of DNA sequencing has helped researchers uncover the phylogeny of a healthy dog's gut, shedding light on how diet affects gastrointestinal infections. The study found that dogs have diverse bacterial communities, with Firmicutes and Bacteriodetes being the most prevalent.
Researchers at Yale University discovered a functioning genetic remnant from a time before DNA existed in the stomach bacterium Clostridium difficile. This ancient RNA complex plays a critical role in infecting human cells and regulating gene expression, challenging scientists' understanding of life's origins.
A new gene that enables bacteria to resist almost all antibiotics has been found in patients from India, Pakistan, and the UK, posing a serious global public health threat. The rapid emergence of these multi-drug resistant bacteria highlights the need for close international monitoring and surveillance.
Researchers found that bacteria cells start dividing normally but unexpectedly 'pop' when the colony reaches a certain density. This phenomenon is linked to the amplification of plasmids in response to cell density, highlighting the importance of considering hidden interactions in engineered gene circuits.
Researchers studied the bacterial community structure in four environments of the Tablas de Daimiel National Park, revealing similarities and differences between them. The study found 265 new phylum groups, including those related to Proteobacteria, which are abundant in the superficial sediment sample.
A new study has developed a computational approach to classify bacterial navigation systems, revealing over a dozen versions and assigning hundreds of species to each. This discovery allows for predicting how individual bacteria use their 'navigation' system to move towards favorable environments.
Researchers found that bacteria release extracellular DNA (eDNA) when relatives die, which inhibits the sticky holdfasts of living cells from adhering to surfaces. This allows surviving cells to escape established colonies and outcompete each other for better conditions.
A study led by Universitat Autonoma de Barcelona researchers reveals a new mechanism controlling bacterial swarming and its interaction with the DNA repair system. The discovery could lead to designing new strategies to increase antibiotic sensitivity in pathogenic bacteria.
A new study indicates that babies born vaginally have bacterial communities resembling their mother's vaginal bacteria, while C-section newborns have common skin bacterial communities. This finding has potential implications for infant health as they grow and develop.
Researchers at UCR are developing genetically engineered bacteria to kill mosquito larvae, making it ten times more effective than current products. The new bacterial strain is environmentally safe and has built-in resistance management properties, potentially leading to a commercially available product in 3-5 years.
Researchers discovered how bacteria aid digestion and enhance immune function by binding to B lymphocytes. This finding suggests the possibility of using bacterial spores to treat people with weakened or undeveloped immune systems.
A new treatment stimulates the host immune system to destroy invading microbes, protecting against tularemia and other disease-causing bacteria. The therapy has broad usage and potential for future use as a treatment alternative to antibiotics.
Enterococci bacteria are becoming increasingly resistant to antibiotics, posing a significant threat to hospital-acquired infections. K-State researcher Lynn Hancock is studying the formation of biofilms that enable these bacteria to resist antibiotics and cause severe infections.
Scientists have found a way for pathogenicity islands to detect viruses and eliminate repression, allowing them to transfer virulent genes to other harmless bacteria. This discovery could lead to new treatments for bacterial infections and diseases caused by toxins.
Researchers found several new bacteria originating in the mouth can travel through the blood to cause an inflammatory reaction in the placenta and lead to health issues such as miscarriages and stillbirths. Oral bacteria that colonize in the placenta can stimulate an inflammatory response leading to cervical and membrane weaknesses and...
A new laboratory technique using real-time polymerase chain reaction (PCR) allows for rapid detection of eye pathogens, including bacteria and fungi, in corneal scrapings. This method provides faster diagnosis and treatment for corneal ulcers compared to traditional bacterial culture, which can take up to 48 hours.
A prescription drug, imiquimod, has been found to boost the effectiveness of future vaccines for bacterial and viral diseases like HIV and hepatitis C. Scientists have coated imiquimod with dextran-based microparticles, significantly increasing the efficiency of cellular uptake by immune cells.
The Lawrence Livermore Microbial Detection Array (LLMDA) detects viruses and bacteria with probes in a checkerboard pattern, identifying over 2,000 viruses and 900 bacteria. This technology enables rapid detection of pathogens, improving biodefense, public health, and product safety.
A North Carolina State University researcher found that bacteria from insect bites can be passed to human babies by the mother, causing chronic infections. The study suggests a possible link between maternal infection with bacteria like Bartonella and birth defects.
Researchers discovered that aphids can produce carotenoids, essential nutrients crucial for vision, skin health, and bone growth. The yellowish-green aphid strain produced carotenoids by acquiring a fungal gene through lateral transfer, challenging conventional wisdom on animal nutrient production.
Researchers find that combining certain antibiotics can halt bacterial evolution and favor non-resistant strains, potentially reversing the trend of antibiotic resistance. This approach could lead to identifying novel drug combinations that hinder resistance development without compromising effectiveness.
Scientists have characterized a general mechanism that controls transcription elongation in bacteria, revealing the active ribosome's role in adjusting transcriptional yield. This finding could lead to novel ways to interfere with bacterial gene expression and develop new antimicrobial therapies.
Researchers at Tel Aviv University have developed an optimal UV wavelength to keep water clean of microorganisms, preventing health threats and reducing bio-fouling. This approach could be used in water treatment plants and desalination facilities to make them more efficient and reduce costs.
Bacteria have a CRISPR defence system that can be passed down to future generations, providing immunity against viral attacks. This system could be exploited to give bacteria 'flu jabs' to protect them against real-world threats, increasing industrial productivity and reducing costs.
Bile secretions in the small intestine send signals to disease-causing gut bacteria, enabling them to adapt and prepare to cause disease. The presence of bile triggers genes that increase iron uptake, a crucial nutrient for bacterial growth.
Bile helps E. coli O157:H7 bacteria survive by increasing iron uptake, while reducing attachment to host cells in the large intestine. This study could lead to better protection of food from contamination and a deeper understanding of bacterial disease mechanisms.
Researchers at Albert Einstein College of Medicine have found two novel ways to kill TB bacteria, using an enzyme called GlgE and a second pathway that also synthesizes alpha glucans. This combination could lead to a potent therapy that prevents resistant TB strains from developing.
A new University of Colorado at Boulder study reveals that individual hand bacteria can be used to identify people on computer objects, with a high accuracy rate of 70-90%.
A study by Beth Israel Deaconess Medical Center suggests that mitochondria released into the bloodstream following physical injury elicit a sepsis-like immune response. This finding could lead to new strategies for managing trauma and developing tests to differentiate between infective and non-infective inflammation.
A team at Washington University in St. Louis has identified a link between white-tailed deer populations and emerging tick-borne diseases, including human ehrlichiosis and southern tick-associated rash illness (STARI). The study used a sophisticated DNA assay to track the transmission of pathogens from wildlife to ticks.
Researchers found that sub-lethal doses of antibiotics trigger DNA mutations, producing germs resistant to multiple drugs. The study highlights the dangers of incomplete antibiotic treatment and calls for stricter regulations on its use.
Researchers found that cells' DNA-reading machinery can bypass certain types of damaged DNA, leading to mutagenesis and potential antibiotic resistance in bacteria. This discovery has important implications for understanding how bacteria develop resistance to antibiotics.
Researchers found an association between genes regulating maternal inflammatory response, bacterial vaginosis, and preterm delivery. A cohort study identified nine SNPs in three genes associated with increased risk of preterm birth among women with bacterial vaginosis.
Researchers found bacteria developed into complex cells earlier than thought, with mitochondria evolving around 2000 million years ago. The discovery transforms our understanding of cell evolution and the emergence of more complex life forms.
Researchers found Fusobacterium nucleatum in the lungs and stomach of a stillborn baby, linked to its mother's pregnancy-associated gum disease. The study suggests that oral bacteria can be transmitted from mother to fetus through the blood, emphasizing the importance of good oral health care during pregnancy.
Researchers at Florida Institute of Technology are awarded a four-year, $1.024 million NIH grant to continue their studies on cell growth regulation and its implications for human health. The funding will support the development of novel inhibitors that could be used to combat antibiotic-resistant bacterial diseases and treat cancer.
Researchers at the University of Minnesota have discovered a molecular security system in human cells that deactivates and degrades foreign DNA. This discovery could lead to major improvements in genetic engineering and gene therapy technologies.
Researchers have found that Helicobacter pylori directly activates an enzyme in host cells associated with several types of cancer. Chronic H. pylori infection is a known risk factor for gastric cancer, and the discovery may lead to new treatments for this devastating disease.
Using disinfectants can promote the growth of antibiotic-resistant bacteria, such as Pseudomonas aeruginosa. This adaptation enables the bacteria to survive and infect patients even without exposure to antibiotics.
The study, called the Genomic Encyclopedia of Bacteria and Archaea (GEBA), describes the first 56 genomes from a diverse set of microorganisms. It reveals that phylogeny plays a key role in determining where new genes appear and how they spread.
Scientists applied physics techniques to study bacteria's survival strategies, gaining insights into human decision making. The study found that bacteria's game theory decision making process is more advanced than the Prisoner's Dilemma, enabling them to weigh pros and cons in complex environments.
Researchers at MIT and Boston University have identified a novel mechanism by which the drug hydroxyurea kills bacteria, inducing the production of toxic molecules that ultimately lead to cell death. This discovery raises the possibility of developing new antibiotics that target similar mechanisms.
Researchers have discovered a novel way to target bacterial DNA gyrase, an essential enzyme for bacterial survival and growth. The new antibiotic molecule, simocyclinone D8 (SD8), uses two heads to bind to the enzyme, making it 100 times more potent than single-headed versions.
Researchers found that the parasitic protozoan Ich hosts two new species of intracellular bacteria: Bacteroides and Rickettsia. These bacteria are usually free-living, but in Ich, they represent a new symbiotic relationship.
Researchers describe molecular anatomy of Mycoplasma pneumoniae, a small bacterium that can survive on its own. The study reveals intricate networks and multifunctional molecules, challenging the idea of a 'minimal' cell.
Researchers discovered that cells use 'regulated errors' to create resistant proteins against damage, using the amino acid methionine to neutralize reactive oxygen species. This novel non-genetic mechanism allows every protein to get some protection, making it a crucial defense strategy.
A new study found that cigarettes are contaminated with numerous human bacterial pathogens, including Acinetobacter, Bacillus, Burkholderia, Clostridium, Klebsiella, and Pseudomonas aeruginosa. These bacteria may contribute to both infectious and chronic illnesses in smokers and secondhand smoke exposed individuals.
Researchers at Texas A&M University discovered that phages, a type of virus, can destroy bacterial cell walls by producing an enzyme called endolysin. This finding may aid in the development of phage therapy to treat bacterial infections.
Researchers have made a breakthrough in understanding the molecular characteristics of bacterial spores, discovering that they have entirely different properties than previously thought. The findings suggest that changes in the physical properties of spore water may be crucial to their heat resistance.
A team of researchers, led by Iowa State University's Adam Bogdanove, has made a groundbreaking discovery about the molecular basis of bacterial diseases in plants. They found that specific proteins bind to host DNA molecules at predictable locations, activating targeted genes.
Scientists from Uppsala University have successfully introduced plasmid-based methods into Physcomitrella moss cells, opening doors to powerful techniques in plant research. This breakthrough enables gene cloning and overexpression directly in plant cells without the need for single-cell organisms like bacteria or yeasts.
A team of scientists analyzed the DNA of ancient remains to discover that Mycobacterium leprae, the leprosy bacterium, has colonized the entire earth due to human travels. The study found that the bacteria's four strains are distributed according to historical population movements.
Researchers have developed a system to track RNA movement in live bacterial cells, revealing new information on its localization and structure. The study shows that RNA is not evenly distributed throughout the cell but instead forms helical structures resembling those found in proteins involved in DNA replication.
A Michigan State University experiment has watched the emergence of natural selection over 40,000 generations, providing insights into genome evolution and adaptation. The study's findings have implications for biotechnology and cancer research, revealing complex relationships between genetic mutations and environmental pressures.