Articles tagged with Nucleotides
Researchers discovered a naturally occurring enzyme called viperin that produces the molecule ddhCTP, which prevents viruses from copying their genetic material. The compound shows promising antiviral effects against flaviviruses, including Zika and West Nile viruses, but not picornaviruses.
Researchers have developed a new way to synthesize DNA sequences using enzymes, promising to accelerate the pace of science. The innovative approach uses TdT enzyme to add nucleotides in a controlled manner, eliminating drawbacks of existing methods and enabling faster, cheaper and more accurate synthesis.
Biochemists and molecular biologists use a new method to label m6A modifications in mRNA, allowing for precise detection using Next Generation Sequencing. The approach enables researchers to analyze the role of m6A modifications in physiological and pathological processes.
The study reveals that the genetic code, specifically silent nucleotide substitutions, plays a crucial role in determining the functions of vital proteins. Ribosome density on RNA is also found to be significantly higher for β-actin than γ-actin, enabling it to translate into protein faster.
Research on the mangrove killifish found a remarkable amount of genetic diversity across different lineages, contradicting expectations. The fish's ability to fertilize itself and its eggs suggests a complex behavior that allows it to adapt to changing environments.
Researchers at Caltech developed a method to assemble large DNA structures with customizable patterns, creating a 'canvas' that can display any image. They used fractal assembly to recreate the world's smallest Mona Lisa using DNA origami.
Researchers have developed a streamlined method and 'rules' to enhance the use of CRISPR technology, improving genome editing consistency and efficiency. The new guidelines focus on optimal donor DNA design and homology arm lengths, allowing for longer sequences to be inserted into the genome.
Scientists mapped the flow and regulation of nucleotides, revealing a mechanism that slows down DNA replication when out of rhythm. This slowdown allows for nucleotide production to catch up, ensuring healthy genome copying without mistakes.
A new study found that CRISPR-Cas9 gene editing can cause hundreds of unintended mutations, including single nucleotide changes and deletions in non-coding regions. The researchers emphasize the importance of using whole genome sequencing to detect off-target effects and encourage others to use this method for safer editing.
Researchers from UCL, Harvard and Massachusetts General Hospital suggest a single chemical mechanism for forming both purine and pyrimidine nucleotides. They demonstrate that these molecules can be assembled on the same sugar scaffold to form RNA, providing a solution to a long-standing challenge in understanding the origins of life.
Researchers at IBS prove the accuracy of a gene editing method that substitutes one nucleotide in the genome, finding it more accurate than CRISPR-Cas9. The technique caused fewer off-target changes, indicating its potential for widespread use.
Researchers at Kumamoto University have discovered the key to hMTH1's ability to hydrolyze multiple oxidized dNTPs with high efficiency. The protonation state of specific aspartate residues plays a crucial role in this process, allowing for targeted inhibition of cancer cells.
A team of researchers at Columbia University has developed an algorithm that unlocks DNA's full storage potential, storing up to 215 petabytes of data in a single gram. They demonstrate the reliability and efficiency of their DNA Fountain technique, which packs more information into DNA molecules than previously published methods.
Researchers successfully produced the first transgenic mice with a single nucleotide difference in the dystrophin and tyrosinase genes, demonstrating a new gene editing technique that can substitute one nucleotide into another without DNA deletion. This breakthrough could potentially lead to the correction of genetic defects in humans.
Nanopore sequencing is a modern and promising technique that benefits from the potential advantages of label-free sequencing and long reads. This method analyzes DNA directly taken from cells, enhancing sequencing accuracy. Recent advances in solid-state nanopore sequencing are investigated in a review published in Recent Patents on Na...
Scientists found that adding a viscous solvent, or thickener, to a primordial mixture could facilitate the self-duplication of RNA and DNA strands. This discovery provides evidence for the origins of life on Earth, suggesting that gene replication may have occurred in environments with varying concentrations.
Researchers have identified a new mechanism that affects immune cell performance and disease risk. FAMIN protein regulates energy availability to macrophages, influencing their ability to fight infection.
A new study by the University of Illinois reveals that Palmer amaranth populations are resistant to PPO-inhibiting herbicides due to a genetic mutation involving the deletion of three nucleotides. This mutation is expected to spread rapidly, making it essential for farmers to switch to alternative herbicides.
Researchers investigate the interaction of nucleotide chains with metallic nanoparticles in carbon nanotubes using hybrid molecular dynamics simulation methods. The study highlights the potential of these systems for designing electronic diagnostic tools and drug delivery systems.
Researchers at University of Montreal developed programmable DNA thermometers that can measure temperature at the nanoscale. The smallest thermometer is 5 nm-wide and produces an easily detectable signal as a function of temperature.
Scientists have produced proto-nucleotides resembling RNA's nucleobases through simple laboratory reactions, advancing understanding of life's origins. The discovery has implications for the probability of life existing elsewhere in the universe.
Researchers have developed a complete system to sequence DNA in nanopores electronically at single molecule level with single-base resolution. The system uses a protein nanopore array and polymer-tagged nucleotides to perform single molecule electronic DNA sequencing, enabling real-time and parallel sequencing of multiple DNA molecules.
Researchers from SISSA have developed a novel technique to visualize RNA dynamics using stop-motion animation, based on a huge international database of crystallographic images. This approach allows for the creation of coherent sequences of conformations, providing valuable insights into molecular transitions and dynamics.
Researchers developed a new mathematical model to estimate mutation rates based on nearby DNA sequences, revealing genetic risk factors for complex human diseases. The model predicts up to 93% of variability in mutation occurrence and identifies new sequences prone to mutation beyond CpG sites.
A new algorithm has been proposed to automatically search for genes in DNA sequences, making it more efficient and accurate. The BRAKER1 algorithm combines the advantages of existing tools and has already been downloaded by over 1500 laboratories worldwide.
A MGH team developed a variant of the SaCas9 enzyme that recognizes a broader range of nucleotide sequences, increasing its targeting range two- to four-fold. This advancement expands the number of genomic sites accessible by CRISPR-Cas9 technology.
EPFL scientists have developed a method that improves the accuracy of DNA sequencing up to a thousand times by slowing down the process using nanopores and viscous liquids. This breakthrough paves the way for better and cheaper DNA sequencing, enabling scientists to detect mutations and identify different organisms with greater precision.
Researchers visualize the atomic view of microtubules, revealing the crucial role of end-binding proteins in regulating their dynamic instability. This understanding could lead to improved potency and selectivity of anticancer drugs targeting microtubule dynamics.
Researchers discovered that cancer cells incorporate chemically modified nucleosides into their DNA, which is toxic to them. The study found that modifying these nucleosides could be used as a specific anti-cancer agent, exploiting epigenetic changes in cancer cells.
Researchers developed an RNA dynamics model using beads and springs, achieving accurate predictions comparable to Molecular Dynamics simulations. The model's simplicity allows for near real-time processing and may be a viable alternative to expensive computer simulation methods.
Researchers from Penn Vet show how arginylation, a protein modification, regulates an enzyme called PRPS2, critical for human life and involved in cancer. The study suggests that arginylation could be a target for intervention to prevent uncontrolled cellular expansion in cancer.
Two new nucleotides, 'Z' and 'P', have been found to form double helix structures similar to those made by the four natural bases C-G-A-T, opening up possibilities for creating new proteins with medical applications.
A CNIO team has developed a method to rescue premature aging in mice by increasing the body's capacity to produce DNA building blocks. By introducing a mutation that boosts nucleotide production, the researchers doubled the lifespan of ATR-mutant mice from 24 weeks to 50 weeks, also alleviating symptoms of Seckel syndrome.
A study published in Molecular Biology and Evolution identifies a key set of nucleotide variants in the AS3MT gene, which are associated with increased resistance to arsenic. These protective variants were found at higher frequencies in Andean women, who have been exposed to high levels of arsenic for thousands of years.
Researchers used time-lapse crystallography to show that DNA polymerase inserts damaged molecules into DNA strands, triggering cell death in response to environmental exposures. This process can lead to various human diseases, including cancer, diabetes, and cardiovascular disease.
A team of SISSA scientists developed a new geometrical model to analyze RNA structure, which is simpler and faster than traditional methods. The method has been effective and robust in tests, performing well in some cases even better than conventional methods.
Researchers at Scripps Research Institute have devised an enzyme with unique properties that may have contributed to the origin of life on Earth. The new ribozyme works by knitting together a 'copy' strand of RNA using an original template, with the ability to make copies of its own left-hand mirror image.
University of Illinois researchers use charged graphene to control the movement of DNA through a nanopore, allowing for faster and more accurate DNA sequencing. The study reveals that changing the graphene's charge can stop or speed up DNA movement, and even force it into specific conformations.
Researchers have developed a powerful new tool to identify and characterize nucleotide sugar transporters, critical components in the biosynthesis of plant cell walls. The assay enabled the characterization of six novel transporters in Arabidopsis, revealing their bispecific nature and regulation by substrate availability.
Researchers at Stanford Medicine discovered a single nucleotide change in human DNA that affects the expression of a key protein involved in hair color. This subtle change in gene expression can have significant impacts on an individual's hair color, with blonde hair resulting from increased KITLG expression in hair follicles.
The FANTOM project has published an exhaustive map of specificities in gene expression, revealing the first nucleotides of messenger RNA to identify where genes start synthesizing proteins. This study provides insights into how genes are regulated in different tissues, with implications for understanding diseases such as Parkinson's
Researchers found a rare RNA 'edit' in Trypanosoma brucei that changes genetic information necessary for protein production, and splicing is required for functionality. The discovery has significant implications for understanding coding sequences and potential drug targets.
A UMass Amherst polymer scientist is working on a four-year, $1.08M grant to develop new ways to control the process of reading precise nucleotide order in DNA chains as they pass through a nanopore. The goal is to create cheaper, faster and more accurate gene sequencing for medical research and healthcare.
A new software tool, DeNovoGear, uses statistical probabilities to identify and validate genetic mutations. This improves the diagnosis and treatment of mutation-related diseases, including pediatric diseases and cancer research.
Researchers found two new mechanisms governing RNA editing in a key neurodevelopmental gene in living fruit flies. The mechanisms involve newly discovered sequences and structures far away from the editing sites, which can be controlled like a tuning knob to increase or decrease editing.
Researchers at Columbia University have developed a novel approach for single molecule electronic DNA sequencing that can accurately distinguish four DNA bases using nanopores. The technique, called Nano-SBS, uses distinct chemical tags to label DNA building blocks, overcoming the challenge of small differences among the four nucleotides.
Recent advances in nanopore sequencing, developed by Stuart Lindsay, demonstrate improved DNA reads and can pinpoint individual bases with greater than 90% accuracy. This technology has the potential to become ubiquitous at a cost below $1000 per genome.
A Cold Spring Harbor Laboratory study reveals a new way in which the cell's splicing machinery recognizes splice sites, impacting current ideas on how missteps triggered by mutations can lead to diseases. The discovery affects up to 5% of all splice sites and has implications for pinpointing splicing defects underlying certain diseases.
Researchers have developed a nanoscale sensor that can electronically read the sequence of a single DNA molecule, leading to potential breakthroughs in personalized medicine. The technique is fast and inexpensive, making it possible to reveal predispositions for afflictions like cancer, diabetes, or addiction.
A novel method has precisely pinpointed the location of proteins that read and regulate chromosomes, providing a high-resolution view into gene regulation. This breakthrough could lead to a deeper understanding of normal human development and disease mechanisms.
A Berkeley Lab-led team has solved the structure of human FEN1, a key player in DNA replication and repair. The study reveals how FEN1 binds to DNA, opens it by severely bending the template strand, and prepares flaps for joining to new fragments.
Researchers at Arizona State University have developed a method to construct arbitrary, two and three-dimensional shapes using DNA origami. The new technique allows for the creation of complex curvature in 3D nanostructures, enabling potential applications in ultra-tiny computing components and nanomedical devices.
AUA-led team finds complex organic molecules, including amino acids and nucleotide bases, in Titan's atmosphere. These findings suggest that Titan's atmosphere could be a reservoir of prebiotic molecules that serve as the springboard to life.
A new technology developed by Stanford University allows scientists to experimentally capture the global snapshot of thousands of RNA molecules in a cell. This breakthrough advances understanding of RNA's complexity and function.
A team of researchers at the University of Washington has developed a method for rapid and cost-effective DNA sequencing using nanotechnology, paving the way for personalized medicine. The new technique has the potential to provide detailed genetic information for specific conditions and diseases.
Scientists have successfully generated long chains of RNA molecules in water, shedding light on the earliest evolutionary steps in biological molecule formation. The study found that cyclic nucleotides can merge together to form polymers over 100 nucleotides long at temperatures similar to ancient Earth.
Researchers at Ohio State University observed real-time behavior of an enzyme called Dpo4, a model Y-family enzyme. They defined critical steps in the process and identified unexpected movement that could lead to DNA mistakes. The findings set the stage for studies on DNA copying errors and potential cancer and disease causes.
Researchers at Singapore Immunology Network (SIgN) have identified the molecular key to understanding the p53 tumor suppressor gene's function. The discovery reveals how p53 regulates genes by recognizing specific sequences of nucleotides in DNA, providing a missing piece to this complex biological process.
A team of scientists has measured the general rate of genetic mutation at individual DNA letters in humans for the first time. The study found that most mutations are harmless and have no apparent effect on health or appearance, with an average of 100-200 new mutations per person.
A new nucleotide, 5-hydroxymethylcytosine, has been discovered in the mouse brain, opening a new front in epigenetic research. This discovery may challenge existing approaches to investigating DNA methylation and could have significant implications for understanding gene regulation.