Articles tagged with Bacterial Proteins
Research reveals how Bdellovibrio bacteriovorus uses an ankyrin-type protein called Bd3460 as a shield to protect itself against its own enzymes. The study found that the protein binds to the tip of the enzyme weapons, nullifying their action until they are safely secreted out of the Bdellovibrio and into the prey bacteria.
Researchers discovered a 'self-protection' protein in predatory bacteria that binds to enzymes, temporarily deactivating them. This mechanism helps Bdellovibrio bacteriovorus protect itself from its own attack while killing other bacteria.
Researchers found that gut bacteria produce proteins that stimulate the release of satiety hormones and activate neurons that reduce appetite. This discovery suggests that gut microbiota play a role in controlling appetite and satiety.
Two new studies from University of California, Berkeley provide detailed insights into CRISPR-Cas9's molecular basis for accurate DNA targeting. The Cas9 protein appears to have at least three ways to check for correct target DNA before making a cut, ensuring precise genome editing.
In a breakthrough study, researchers discovered how search-and-rescue proteins like MutS identify and correct rare DNA mutations that can cause certain cancers. The findings provide insight into the mechanism of DNA mismatch repair and could lead to new methods for detecting and preventing cancer.
A Penn-led team discovered that variations in Salmonella proteins determine their host specificity in cows, poultry, and humans. By analyzing genome-wide association studies, the researchers found a link between specific protein variants and host species, validating their findings with laboratory experiments.
A team of researchers mapped a universal dynamic that explains protein production and distribution, with implications for understanding phenotypic variability. The findings suggest a fundamental role for cellular feedback mechanisms in regulating protein levels.
Researchers at University of Illinois developed spiral polypeptides that target bacteria's outer membrane, perforating it until the cell falls apart. The antimicrobial agents are designed to interact with bacterial membranes while minimizing interaction with human cells.
Researchers at Berkeley Lab have discovered the structural basis by which bacteria capture and utilize foreign DNA, a crucial step in their adaptive immune system. The study reveals that Cas1 and Cas2 enzymes function as molecular rulers to measure and manipulate foreign DNA.
Scientists have identified a human cell protein called PLEKHA7 as a key modulator of Staphylococcus aureus virulence. Mice lacking this protein showed improved healing from skin infections and pneumonia, paving the way for potential new therapies to combat antibiotic-resistant strains.
Scientists at Jena University have discovered how bacteria infect plants by hijacking the regulation of flower development, preventing normal growth and sexual reproduction. The study sheds light on the molecular reasons behind this phenomenon, where infected plants 'become the living dead'.
Researchers discovered M1 strep's ability to inactivate antimicrobial peptides, a key component of the immune system's defense. This finding highlights the need to fortify or optimize antimicrobial peptides to improve the immune system's odds of fending off infections.
Researchers at UMass Amherst have identified key factors controlling bacterial proteolysis, a crucial cell process. The discovery provides a new target for developing antibiotics with high potential to avoid triggering drug resistance.
A team of researchers at Michigan State University has created a synthetic protein that improves the assembly of carbon-fixing factories in cyanobacteria, enabling more efficient biofuel production. The new protein also provides a proof of concept for improving plant photosynthesis or installing new metabolic pathways in bacteria.
Scientists at University of Basel have shown how chaperones stabilize immature bacterial membrane protein FhuA and guide it in the right folding direction, preventing misfolding. This discovery has significant implications for diseases caused by misfolded proteins like Alzheimer's and cystic fibrosis.
A Umeå University research group has identified two bacterial enzymes that can be used to modify proteins for use in medical drugs. The AnkX-Lem3 system allows for the addition and removal of a phosphocholine moiety, enabling fine-tuned control over protein function.
Researchers discovered how Sulfolobus, a superbug that thrives in 80°C environments, transfers its genetic material to new cells during cell division. This finding sheds light on the origins of life and may lead to breakthroughs in understanding life beyond Earth.
Researchers at UCSB have discovered a mechanism by which gram-negative bacteria deliver protein toxins to their neighbors, killing them. This finding could lead to the development of targeted antibiotics that leave beneficial bacteria in the gut intact.
Scientists have identified a new family of copper storage proteins called Csp that are present in diverse bacteria, raising questions about how bacteria use copper ions. This discovery may help develop biotechnological applications to exploit methane and protect the environment from its potent greenhouse gas effects.
Researchers from the University of Basel's Biozentrum have discovered a mechanism by which FIC proteins send bacteria into a state of dormancy, protecting them from antibiotics. This discovery sheds light on the evolutionary origins of pathogens and their tools, offering new avenues for understanding bacterial evolution.
Researchers at TSRI found that Staphylococcus aureus develops resistance to arylomycin by switching on a previously uncharacterized set of genes, bypassing the essential protein Type I signal peptidase. This discovery highlights the built-in redundancies that help bacteria survive in many environments.
Scientists at Johns Hopkins Medicine deciphered the structure and unusual shape of bacterial protein IstB, which prepares segments of DNA for jumping genes. The clamshell shape bends DNA into a 180-degree U-turn, priming it for transposon insertion.
Researchers propose that bacteria in the gut activate immune cells against proteins in the eye, leading to autoimmune uveitis. A study on mice found that eliminating gut bacteria delayed disease onset and severity, suggesting a potential therapeutic target for this condition.
Researchers from Arizona State University and other institutions discovered how bees immunize their offspring against specific diseases using the bee blood protein vitellogenin. This process enables bee babies to better fight diseases once they are born, opening doors for creating edible vaccines for insects.
Researchers at Duke University have discovered the role of HipA in recurring urinary tract infections, finding that mutant versions of the protein can cause multidrug tolerance by putting bacterial cells into dormancy. The study provides a new method for combating drug-tolerant infections.
Researchers created a tethered artificial ribosome called Ribo-T, which works nearly as well as the natural cellular component. The engineered ribosome enables production of new drugs and biomaterials, and may lead to better understanding of ribosome function.
A research team at the University of California, Davis, has identified a tiny protein called RaxX that helps plants fight off bacterial infections. The discovery could lead to more disease-resistant crop varieties and new treatments for microbial infections in both plants and animals.
Researchers have determined the structure of a simple bacterial cell membrane pump that controls protein passage, offering new insight into bacterial manipulation. The PCAT pump, a single-protein machine, recognizes and processes cargo before pumping it out of the cell.
A Temple-led research team has discovered that bacterial biofilms found in the gut can provoke the onset of systemic lupus erythematosus (SLE) in lupus-prone mice. The researchers found that curli amyloid and DNA complexes in biofilms lead to inflammation, self-attacking antibodies, and autoimmune disease symptoms.
Researchers found that CpdR binds to the ClpXP protease, priming it for engagement with substrates, allowing for broad recognition of multiple pathways. This mechanism enables cells to control multiple pathways with a single regulator, facilitating rapid response to stress.
Researchers discovered how bacteria rapidly replace outer membrane proteins in response to changing growth conditions. This mechanism involves the formation of 'OMP islands' that regulate protein insertion, allowing bacteria to change their outer membrane coat in just two generations.
Researchers discovered a previously unknown serotype of oral bacterium, Streptococcus mutans serotype k, in African-American schoolchildren in southwest Alabama. The study found the bacteria to be present in 84% of children, with no invasive genes linked to systemic diseases.
Scientists at the University of Virginia School of Medicine have discovered a blueprint for battling human disease using DNA clad in near-indestructible armor, offering a promising template for delivering gene therapy.
Researchers have identified a mechanism allowing E. coli to thrive in inflammatory bowel disease patients by inhibiting myeloperoxidase and regulating iron levels. This discovery may lead to new treatments targeting enterobactin-based drugs or alleviating inflammatory pathways.
University of Pittsburgh scientist Alexander Deiters has developed a new method for controlling gene editing using light, enabling more precise and controlled manipulation of genes. This approach may eliminate 'off-target effects' and enable genetic studies with unprecedented resolution.
Researchers have discovered an intricate dance of protein motion, where temperature sets the tempo, allowing for a deeper understanding of biological mechanisms and potential treatments. This new knowledge could lead to breakthroughs in disease cures and compound production.
University of Adelaide researchers identified a common building block called PATR in virulence factors of many major harmful bacteria. The discovery could lead to the development of broad-spectrum bacterial virulence inhibitors, revolutionizing antibiotic treatments.
Researchers discovered that bacterial viruses carry genetic instructions for producing an actin-like protein, which enables the transport of their DNA to host cells. This mechanism allows the virus to replicate its genome in bacteria lacking a cytoskeleton.
Research at University of Chicago Medical Center reveals how immune system shapes gut microbiota to limit infections, providing a potential new approach to prevent bacterial infections without antibiotics. The study identifies a critical protein ID2 that plays a key role in this process.
A study by University of Chicago scientists reveals how immune cells shape the gut microbiota to naturally limit infections. Intestinal immune cells, called type 3 innate lymphoid cells (ILC3s), play a crucial role in detecting harmful bacteria.
Researchers at Iowa State University and the Ames Laboratory have discovered two proteins that pump antibiotics out of bacteria, allowing them to resist medications. The study reveals that these efflux pumps are part of a large family of proteins and may help protect cells from certain drugs.
Researchers developed a tissue culture model to study latent tuberculosis infection, finding that the human immune system generates an early response that protects against active disease. However, some bacteria can adapt and survive in these high-pressure environments, increasing the risk of reactivation.
Despite pre-surgery antibiotics, bacterial clumps persist in joint fluid, forming protective mesh of proteins that slow growth and make them resistant to treatment. The study identified a key reason for the difficulty in curing joint infections: biofilm-like clumps of bacteria that harbor antibiotic-resistant superbugs.
Researchers used supercomputers to analyze a biomolecular interaction that behaves like a Chinese Finger Trap puzzle. The study identified the nature of cellulosomal proteins' adhesion complex, showing extreme resistance to force, and boosted efforts to develop catalysts for biofuel production from non-food waste plants.
Researchers at University of Utah discovered a disposable molecular ruler that determines bacterial needle length, enabling efficient infection and potential applications in developing new antibiotics and nanotechnology.
Unique proteins called tapirins found in heat-loving bacteria bind tightly to cellulose, enabling the breakdown of plant cell walls and conversion into liquid biofuels. The discovery paves the way for more efficient methods of converting plant matter into biofuels.
Researchers have discovered that bacteria can acquire genetic information from viruses and other foreign invaders, which is then stored in their own genome as an immune system. The key proteins, Cas1 and Cas2, recognize repeating sequences in the CRISPR loci and target them for spacer insertion.
A new study by Berkeley Lab reveals how calcium ions trigger the folding and binding of S-layer protein nanosheets, enabling the self-assembly of complex two- and three-dimensional structures. The findings have potential applications in creating nanostructured arrays for various materials.
TLR9 binds to pathogen DNA, activating the innate immune system. Researchers elucidated its structure, revealing two rings bound together when recognizing CpG motifs.
Researchers have mapped nearly every protein in a bacterial cell for its entire cell cycle, discovering a large number of distinct patterns with subtle spatial and temporal differences. This approach has implications for understanding how bacteria coordinate the timing and location of subcellular processes.
Researchers at Tel Aviv University identified a novel protein capable of targeting and inhibiting the activity of a protein essential to bacterial cells. This discovery may strengthen efforts to combat antibiotic-resistant infections and presents a potential breakthrough in the fight against superbugs.
Research shows that defensins can disable bacterial toxins by binding to specific locations on these proteins, triggering misfolding. This discovery offers a promising model for developing drugs that could mimic the activity of defensins and reduce pathogens' infectious power.
Researchers have identified a potential universal therapeutic target for treating multiple infections, including Ebola, by targeting the GRP78 protein. The OSU-03012 (AR-12) and FDA-approved Phosphodiesterase 5 Inhibitors combination has shown promise in preventing viral replication, killing cancer cells, and reducing antibiotic-resist...
A team of scientists identified a key mechanism by which proteins change shape in response to different conditions. This discovery has significant implications for understanding how to manipulate proteins, which could lead to breakthroughs in treating diseases.
Researchers at Ruhr-University Bochum discovered a protein called RidA that protects intestinal bacteria E. coli from immune activity caused by chlorine. In the presence of chlorine, RidA binds to other proteins, preventing them from coagulating and losing their function.
Researchers at UCL discovered how a protein, RcsF, triggers an alarm system in bacteria to defend against antibiotics. This discovery provides a new target for developing new antibiotics and could help combat the growing problem of antibiotic resistance.
A Danish research team has gained a new understanding of the diarrhea-causing bacteria, ETEC, and is exploring its potential for developing an entirely new class of vaccines. The research aims to create a vaccine that can activate the immune system to recognize the agent as foreign and destroy it.
Researchers at Brown University have developed a new strategy to combat antibiotic-resistant bacteria by using molecular decoys. By administering fragments of antimicrobial agents alongside the full compounds, the researchers were able to increase their effectiveness against efflux pumps that stand guard along bacterial cell membranes.
Researchers capture highest-resolution protein snapshots with X-ray laser to track structural changes in photosynthetic bacteria upon light exposure. This breakthrough paves the way for studying biologically important molecules at ultrafast timescales.
A team of scientists has created a synthetic surface that can control the adhesion of E. coli bacteria using light. By switching on and off specific wavelengths, researchers can reverseorientate carbohydrate structures to influence bacterial bonding.