The completed genome sequence of Azotobacter vinelandii reveals unique features that enable the bacteria to fix nitrogen in the presence of oxygen. The research provides new prospects for the production and characterization of oxygen-sensitive proteins through genetic approaches.
Researchers found that interrupting selenoprotein production can halt growth of bacteria such as Clostridium difficile and Treponema denticola. The study uses auranofin, an FDA-approved gold salt compound, to block bacterial growth by altering selenium metabolism.
Researchers at the University of Nottingham have identified a key mechanism behind bacterial meningitis, offering new avenues for treatment and vaccine development. The discovery could save hundreds of children's lives and provide broad protection against this deadly disease.
Scientists at Georgia Institute of Technology developed a new approach using RNA-Seq to comprehensively define the transcriptome of Bacillus anthracis. This technique provides a more detailed view of how bacteria regulate their gene expression, allowing for improved tasks like antibiotic discovery and microbial engineering.
A study found that variations within Acinetobacter baumannii bacteria can affect its response to antibiotics, highlighting the need for targeted therapy in infectious disease. The analysis of six genomes revealed unique sets of genes among isolates, with some genes shared but others specific to different subsets.
The University of Wisconsin-Madison has developed a scientifically-led training program for graduate students and postdoctoral researchers to learn effective teaching methods. The approach focuses on fostering scientific inquiry, diverse learning styles, and rigorous self-evaluation.
A study by the University of Nottingham aims to identify bacterial antigens that could lead to an effective vaccine against Bovine Mastitis. The researchers will use state-of-the-art molecular technology to determine which proteins are essential for infection.
Researchers found that certain bacteria can harness iron from the environment or human host using a unique gene. This discovery could lead to new ways to target diseases like tuberculosis by limiting access to essential iron sources.
Dr. Koji Nakayama is recognized for his groundbreaking research on Porphyromonas gingivalis, a key player in periodontal disease and potential systemic conditions like cardiovascular disease. He has published over 75 papers on this topic and received the 2000 Rokuzo Kobayashi Memorial Award.
Researchers at Hebrew University of Jerusalem developed a real-time test to monitor bacterial syringe activity, discovering new properties that could lead to drug development. This breakthrough has the potential to combat diseases caused by pathogens like Salmonella and E. coli.
Researchers study the function of biofilm in Bovine Respiratory Disease Complex (BRDC), a major economic problem affecting feedlot cattle. The goal is to understand how biofilms contribute to disease and develop effective vaccines.
Researchers have identified a crucial role for antibodies in protecting against nontyphoidal strains of Salmonella bacteria, which causes fatal infections in African children. Meanwhile, a study on HOXB4 gene therapy found that early precursors can cause leukemia in large animals, highlighting the need for extreme caution in human trials.
Researchers at the University of Cambridge discovered that inactivating a specific gene in Erwinia carotovora bacteria severely impedes its ability to cause blackleg and soft rot in potatoes. This finding has significant implications for developing new anti-rot agents and pesticides.
The Great Lakes Bioenergy Research Center aims to develop cellulosic ethanol and other biofuels, creating momentum for a green future in renewable resources. The center will focus on breeding new varieties of bioenergy plants, developing processing techniques, and improving microbial processes.
Researchers have discovered a weakness in the armour that protects B. cenocepacia from antibiotics, identifying a key sugar required for its protection. This finding may lead to novel molecules to disrupt its synthesis and develop new treatments.
A NYUCD research team found that Streptoccocus mutans, a bacterium associated with dental caries, has evolved along with its human hosts in Africa between 100,000 and 200,000 years ago. This oral bacterial evidence supports the dispersal of modern Homo sapiens out of Africa to Asia.
The Integrated Microbial Genomes (IMG) data management system has been updated with new microbial genomes from NCBI's RefSeq collection, model eukaryotic genomes, and plasmids. This update brings a total of 2,782 genomes to the system, including 481 new public microbial genomes.
Researchers create polymer-based sensor that detects bacterial contamination with fluorescent signals, reducing detection time from days to hours. The new technology has immediate applications in healthcare and battlefield conditions.
A collaborative research project has sequenced and assembled the complete genome of Pichia stipitis, a native xylose-fermenting yeast. This breakthrough will increase efficiency and economic viability in bioconversion by enabling simultaneous fermentation of glucose and xylose.
The MOSAR project aims to control and study antimicrobial resistance in hospitals, with a focus on four types of microorganisms. IDIBAPS-Hospital Clínic participates in the network, led by INSERM, and has expertise in bacteriology and public health.
Researchers have discovered that two alphaproteobacteria lack the universal extra guanylate nucleotide typically found in transfer RNA molecule tRNAHis, which assists in incorporating amino acid histidine into new proteins. This finding suggests a radical departure from previously known identity rules for histidine-carrying tRNAs.
Scientists have made significant discoveries about the energy-generating mechanisms of bacteria, specifically Vibrio cholerae. The study reveals that this pathogen uses a unique system involving the enzyme NQR to generate a sodium gradient, which powers essential cell functions like movement and flagellar rotation.
A failed experiment by University of Wisconsin-Madison bacteriologist Marcin Filutowicz led to the creation of a new biocontrol agent that destroys bacterial pathogens without triggering antibiotic resistance. The discovery has started a promising biotechnology firm, creating high-paying jobs for Wisconsin.
Scientists from the University of Wisconsin-Madison have made a fundamental discovery about RNA synthesis in E. coli, shedding light on how bacteria regulate gene expression. The study found that a specific region within DNA promoters makes contact with RNA polymerase, but not at promoters for genes involved in ribosomal RNA production.
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 found that mispaired nucleotides, also known as wobble pairs, increase transfer RNA's ability to build proteins. This increased reactivity enhances protein production and promotes the movement of DNA and RNA molecules.
Researchers found a pathway for cells to turn on genes and respond to singlet oxygen, a highly reactive substance that destroys biological molecules. This discovery could lead to modified plants with enhanced crop yields and improved bioenergy sources.
A recent study published in Journal of Bacteriology has identified the HipA gene responsible for making persister cells resistant to antibiotics. Biofilm infections, which can cause fatal lung infections, periodontal disease, and other serious health issues, are notoriously difficult to treat.
A new study by the European Union shows that group A streptococci (GAS) infections are more common than previously thought, with an estimated 18-20,000 cases per year across the EU. The study also reveals a higher number of different bacterial types, with nearly 200 types currently identified, and potential antibiotic resistance issues.
Researchers at the University of Rochester Medical Center have discovered that S. mutans, the primary bacterium responsible for tooth decay, has a vulnerable gene called fabM that enables it to withstand acidic environments. By targeting this gene, scientists may be able to develop new compounds to kill S. mutans and reduce cavities.
John Sherris is recognized for his tireless advocacy and leadership in clinical microbiology, including development of standardized susceptibility testing. He also holds an honorary medical degree from Karolinska Institute and has published a highly regarded textbook on medical microbiology.
Jorge Escalante-Semerena has supervised 21 Ph.D. students, many of whom have won awards and fellowships. He is renowned for helping students gain recognition for their work, while also being a productive researcher focusing on cobalamin biosynthesis.
Researchers have discovered a molecule called ppGpp that plays a crucial role in regulating bacterial gene expression and survival. When amino acid levels are low, ppGpp accumulates and shuts down protein synthesis, allowing the cell to go dormant until conditions improve.
Researchers have identified key genes and proteins involved in anthrax spore formation, revealing a complex process that involves the production of over 750 individual proteins. This study provides valuable insights into the molecular biology of anthrax and could lead to new vaccines and treatments.
Cumbre Inc. and University of Wisconsin-Madison researchers have published data on a new class of bacterial RNA polymerase inhibitors with major breakthrough potential, offering a powerful tool to study gene expression mechanisms and developing new antibiotics against bacterial pathogens.
The US Army has awarded a $1 million grant to Virginia Tech researcher Thomas J. Inzana to develop a vaccine and diagnostic test for tularemia, also known as 'rabbit fever'. The goal is to create an effective vaccine that can stimulate the production of proteins that stimulate T-cells of the cellular immune system.
Treatment with salicylic acid (SAL) induces activation of the S. aureus stress response gene sigB, downregulating virulence factors and reducing ability to adhere to host cells. This finding represents a new prospect for using aspirin as an adjunct therapy to combat Staphylococcus aureus infections.
Salicylic acid has been shown to downregulate two key genes in Staphylococcus aureus, leading to reduced virulence and ability to adhere to host cells. Meanwhile, osteopontin has been found to play a critical role in the development of rheumatoid arthritis by facilitating cell adhesion and immune response modulation.
Researchers found that a humanized anti-human interleuken antibody reduced eosinophils in severe asthma patients, improving pulmonary function. In another study, poor oral hygiene was linked to an increased risk of aspiration pneumonia, with Gram-negative bacteria being the main culprits.
Scientists at University at Buffalo used chitinase to identify the extracellular transport signal of cholera toxin, a crucial step in understanding how bacteria cause disease. The researchers found that only a portion of a specific region of the protein was essential for its secretion.
University of Michigan scientists have identified a protective mechanism that allows anthrax spores to remain dormant in soil for decades. The study found that germination requires the coordinated activity of multiple genes, receptor proteins, and amino acids in two simultaneous signaling pathways.
Adults with cystic fibrosis (CF) are susceptible to cross-infection, including superinfection, from Pseudomonas aeruginosa. Chronic colonization occurs in up to 80% of CF patients, leading to increased illness and death. Genotypic changes in strains suggest social contact is a common mode of transmission.
Scientists have developed a live recombinant vaccine that protects against a fungal infection in mice, using recombinant DNA technology. The vaccine is safer than traditional live vaccines and more effective than 'killed' vaccines, offering a promising approach to protect against rising fungal diseases.
Scientists have identified mating behavior in Candida albicans, a fungus long thought to reproduce only by splitting itself. This discovery promises to accelerate research into the fungus and enable researchers to better understand its biology and identify new drug targets.
A new study contradicts the long-held assumption that the Helicobacter pylori bacterium has been with humans forever. Researchers analyzed DNA from over 500 strains from five continents and found that strains from Peru resemble those from Spain, not those from eastern Asia.
Scientists have discovered a new bacterium, Photorhabdus luminescens, with a toxin effective against a broad range of insect pests. The bacteria can be used as a spray or fed directly to insects, and its genetic material has been licensed for use in crop plants.
Researchers have identified a molecule that allows bacteria to resist an unusually wide range of drugs, including those with different chemical properties. This discovery highlights the dormant potential of some bacteria to survive complex antibiotic treatments.