Articles tagged with Dna Sequences
Scientists developed ELM-seq technique to scan DNA sequences and find optimal 'control dials' that regulate gene activity. The study revealed importance of RNA message's first letter and three-dimensional structure in determining gene transcription and translation.
Researchers successfully altered the flower color of Japanese morning glory from violet to white using CRISPR/Cas9 genome-editing technology. The study highlights the potential of CRISPR/Cas9 for studying and manipulating genes in horticultural plants.
Researchers at EPFL studied the TADs involved in digit development, finding that they can host multiple associations between genes and enhancers. Disrupting the 3D structure of chromatin leads to remodeling of TADs, with CTCF mediating long-range DNA contacts.
A recent DNA study by international researchers found that the female sunburst cerulean-satyr and its male counterpart belong to the same species. The discovery corrects a classification error made in 1911 and sheds light on true species diversity of Neotropical butterflies.
Researchers at Rutgers University have invented a technology to clone thousands of genes simultaneously, creating massive libraries of proteins from DNA samples. This innovation could lead to rapid discovery of new medicines and biomarkers, revolutionizing the field of functional genomics.
Researchers are studying tiny roundworms to understand how grandparents' diets and experiences affect their grandchildren's health. The study aims to create a detailed map of epigenetic markings and explore the consequences of inherited epigenetic information.
A study by researchers at Berkeley Lab found that heterochromatin organizes the genome into specific regions of the nucleus using liquid-liquid phase separation. This mechanism allows proteins to be targeted to one 'liquid' or the other based on physical traits, enabling precise gene regulation.
Italian scientists introduce NanoTracer, a simplified assay combining DNA barcoding with nanotechnology to authenticate food with the naked eye. The test detects substitutes and adulterants in products like European perch and saffron powder.
A new database of genetic information, developed by researchers at Emory University, has improved the accuracy of plant identification using DNA sequencing technologies. The new library uses the rbcL gene, a popular barcode in plants, to identify species from tiny amounts of material, enabling faster and more accurate analysis.
A team of researchers at Caltech has developed a software tool called Seesaw Compiler that allows users to design and build DNA circuits with ease. The tool uses a systematic wet-lab procedure to guide researchers through the process, making it accessible to novices like undergraduate students.
Researchers at Louisiana State University have discovered a way to sequence the DNA of rare and extinct animals preserved in natural history museum collections. This breakthrough enables scientists to analyze the genetic relationships among species, including those that were thought to be lost to science.
Scientists at the Institute of Physical Chemistry of the Polish Academy of Sciences successfully imprint a sequence of a single-stranded DNA in a polymer matrix. The resulting negative polymer is chemically active and selectively binds nucleobases, reproducing the genetic code.
University of North Texas researchers used Maverick supercomputer to perform the first all-atom molecular dynamics simulations of Cas9-catalyzed DNA cleavage. The simulations provided insight into the Cas9 enzyme's active state and resolving controversies about its cutting process.
A new open-access database compiled by Korean scientists provides comprehensive PCR primers for detecting and identifying RNA viruses. The MTPrimerV database contains 152,380 primer pairs covering 1,818 viruses, with an accuracy rate of 100% against the latest NCBI RefSeq database.
A team of researchers has discovered thousands of disease-related genes by analyzing the connections between genes and remote regulatory regions in blood cells. This breakthrough could lead to new treatments for autoimmune diseases such as rheumatoid arthritis, type 1 diabetes, and Crohn's disease.
A team of geneticists found that mammary glands emerged due to the recycling of Hox genes, which are responsible for organizing organ formation during embryonic development. This discovery explains how placental mammals and marsupials developed mammary glands, but not in platypuses.
Researchers at the University of Oxford have found that dietary composition affects DNA sequences in parasites, revealing a previously hidden relationship between cellular metabolism and evolution. The study also shows that it is possible to predict diets based on genetic analysis.
A new technique allows researchers to quickly and cheaply generate DNA variants in a particular stretch of DNA, enabling the distinction between harmless and potentially hazardous genetic variations. This technique has the potential to speed up gene catalog creation and aid clinicians in interpreting genetic mutations.
Researchers used Stampede supercomputer to simulate largest atomic level system of p53 protein, identifying new 'pockets' to reactivate the tumor suppression protein. The simulations revealed complex dynamics between p53 and DNA sequences, offering insights into a potential anticancer therapeutic strategy.
A breakthrough study published in Nature reveals that the fine detail of DNA shape plays a crucial role in distinguishing X chromosome binding sites from other chromosomes. The researchers identified a specific sequence signature called PionX, which is selectively recognized by the dosage compensation complex, enabling gene regulation.
Researchers devise a way to record analog memories in human cells by using CRISPR and self-targeting guide RNA strands. This allows them to track biological events such as inflammation or infection and monitor cell differentiation into various tissues during development.
Researchers found that Hawaiian drosophilids had plural continental ancestors, independently migrating to Hawaii at different times. The team discovered 11 non-Hawaiian Scaptomyza species and reconstructed their phylogeny, estimating ancestral distributions and divergence times.
A team of researchers has engineered a DNA nanowire with alternating guanine bases to facilitate long-range wave-like electronic motions. This breakthrough may lead to the development of stable, efficient, and tunable DNA nanoscale devices.
Researchers have developed a framework to manipulate DNA's conductivity by varying its sequence, length, and stacking configuration. This enables the creation of stable and efficient DNA nanowires with potential applications in gene damage identification and novel electronics.
Geneticists at KU Leuven have discovered that tumour protein TP53 can autonomously locate and bind to specific DNA sequences, activating the right genes to repair damaged cells. This finding sheds light on the mechanisms controlling gene expression and holds promise for future cancer therapies.
Researchers from Griffith University's Research Centre for Human Evolution refuted a landmark study suggesting Mungo Man was an extinct lineage of modern humans. The team recovered the genomic sequence of an early inhabitant of Lake Mungo, supporting the argument that Aboriginal Australians were the first inhabitants of Australia.
Four-stranded DNA (G4) structures were formed in yeast and could potentially contribute to cancer development. A motor protein called Pfh1 unfolds these structures, ensuring genome stability during replication. The study provides insights into G4 structures and their role in maintaining genome integrity.
Researchers found that DNA molecules interact with each other in a way that depends on the sequence of the DNA and epigenetic factors. The team presented direct evidence for sequence-dependent attractive interactions between double-stranded DNA molecules.
A recent study reveals that single mutations can inhibit HIV-1 replication using CRISPR/Cas9, but some also lead to unexpected resistance. Targeting multiple viral DNA regions may be necessary for the antiviral aspect of CRISPR/Cas9 to be effective.
David Zhang's lab at Rice University is developing novel therapeutic tools and diagnostic methods using next-generation sequencing, including probes that identify disease-causing DNA sequence variants and a platform capable of detecting rare single nucleotide variants in biological samples.
Researchers develop a novel approach to encode, store, and retrieve digital data using DNA molecules. They successfully encoded four image files into synthetic DNA snippets and retrieved the correct sequences without losing any information. The technology has potential for addressing the world's needs for archival storage.
Researchers have developed a new method to identify protospacer-adjacent motifs (PAMs) for CRISPR-Cas systems, which are crucial for unlocking the system's functionality. The tools allow for rapid identification of PAM sequences across various CRISPR-Cas systems, revealing that some systems have multiple PAMs of varying strength.
MeCP2 binds genome-wide using DNA sequence features, revealing diverse modes of binding largely independent of methylation status. Local MeCP2 activities explain gene expression patterns in neurons.
Researchers at Osaka University developed two new gene modification methods, lsODN and 2H2OP, which use CRISPR-Cas systems and ssODN. These methods enable efficient and precise knock-in of large DNA sequences, replacing rat genes with human-derived genes, or generating humanized animals.
Researchers discovered that DNA molecules interact directly with each other based on their sequence and epigenetic factors, suggesting a new mechanism for DNA organization in the cell. The study found that methyl groups play a key role in regulating these interactions, which could impact gene expression and chromosome organization.
A new indexing data structure, called Sequence Bloom Trees, greatly speeds up searches of a massive bioinformatics database. The method completed most searches in an average of 20 minutes, while existing techniques took days.
Two studies on yeast reveal that gene expression among tandem DNA repeats varies substantially depending on position within the array. These findings provide key information about DNA architecture in cells, highlighting the central role of chromosome architecture in regulating these sequences.
Researchers at the University of California, Berkeley, have made a major improvement in CRISPR-Cas9 technology, achieving an unprecedented success rate of 60% when replacing short stretches of DNA with normal sequences. This technique is especially useful for repairing genetic mutations that cause hereditary diseases.
A modular system of proteins can detect a specific DNA sequence in a cell and trigger a response, such as cell death. The system can be customized to detect any DNA sequence and trigger a desired response, including killing cancer cells or cells infected with a virus.
Scientists have developed a new technique to genetically engineer cells by inserting large DNA sequences at specific genomic sites. This method may be useful for producing high levels of proteins in mammalian cells.
Researchers found DNA uncoils asymmetrically from nucleosomes like a yoyo, affecting protein production and genetic mutations. This discovery reveals the importance of DNA flexibility in cellular processes.
A team of researchers from Johns Hopkins Medicine has discovered a specific sequence and protein tags that send DNA to the edge of the nucleus, where its genes get turned off. This process is crucial for controlling genes and determining cell fate, particularly during development.
Researchers at MIT have developed a new computer model that allows them to design the most complex three-dimensional DNA shapes ever produced. The model enables nanometer-scale precision and can be used to create DNA scaffolds for anchoring proteins, chromophores, and nanoparticles.
Researchers have developed a program that predicts the placement of chemical tags controlling gene activity based on DNA sequences. The analysis identified specific DNA patterns associated with epigenomic modifications, revealing new insights into gene regulation and potential therapeutic targets.
Glioblastomas are resistant to drug therapy due to epigenetic regulation of EGFR signaling, not altered DNA sequences. This finding suggests a new approach to guiding cancer therapy by analyzing the epigenetic signature of glioblastoma cells.
Scientists at the University of Illinois have discovered a single-layer sheet of molybdenum disulfide (MoS2) that can sequence DNA more accurately and quickly than existing materials. The new material outperforms graphene, which had limitations due to DNA sticking to it.
Scientists have discovered that chemical modifications of a gene can contribute to cancer. A new method developed by MIT researchers analyzes these modifications to identify the type of tumor and how it will respond to different drugs. The technique could offer a way to choose the best treatment for individual patients.
Researchers found that DNA sequences called enhancers find their targets hours before activation during embryonic development, with surprising complexity in fruit fly embryos comparable to vertebrates. The study reveals a primed system ready to spring into action when needed.
A 14-year-old boy's rapid recovery from brain-inflaming encephalitis thanks to next-generation sequencing techniques. The innovative approach, developed at UCSF, enables quick diagnosis and treatment of infectious diseases, revolutionizing clinical laboratory practices.
Researchers have developed a technique to track fetal development by monitoring RNA levels in the blood, revealing insights into gene expression and cellular processes. This approach has potential applications in diagnosing pregnancy complications and detecting diseases like Alzheimer's.
Bleomycin's ability to cut through double-stranded DNA in cancerous cells leads to cell death. The new study presents alternative biochemical mechanisms for DNA cleavage by bleomycin.
Researchers have uncovered how cells block mutation-causing activity of junk DNA, a process involving an enzyme called APOBEC3A. This defense mechanism may help explain a long-standing mystery and has potential implications for cancer treatment.
Researchers identified highly conserved non-coding sequences in plant genomes, associated with basic biological processes like development and gene regulation. These findings suggest that non-coding DNA can have important functions beyond protein encoding.
The NIST Genome in a Bottle consortium has developed reference materials for measuring DNA sequencing process accuracy, providing a 'meter stick of the genome'. These well-characterized, whole genome standards help laboratories assess their sequencing processes and minimize biases.
Scientists discovered that epigenetic marks in plants can affect complex traits such as flowering time and plant architecture. These marks are stably passed on to later generations, opening up new possibilities for plant breeding and evolution.
Researchers found that both time and body size significantly impact DNA barcode sequencing success. Larger spiders have a longer shelf life for sequencing, while nondestructive extraction techniques can improve chances of obtaining a sequence from smaller species.
Researchers have created a quicker and more accurate method for assembling genome sequences by measuring DNA segment interactions and using their three-dimensional shape as a guide. This technique has been used to place previously unaccounted for DNA fragments in the human genome, improving genome assembly accuracy.
UC Riverside plant geneticists Mikeal Roose and Timothy Close are developing a genetic tool to improve citrus breeding. They will use high-density SNP genotyping arrays to study citrus varieties and hybrids, identifying genes for disease resistance, fruit quality, and other essential traits.
A new method called TGV (TALE-mediated Genome Visualization) allows researchers to observe the localization of specific DNA sequences inside the nucleus of living cells. This study tracked male and female genes after fertilization, revealing new prospects for understanding cell cycle dynamics, DNA behavior, and parent gene expression.
Scientists at Rice University have created a method to locate specific sequences along single strands of DNA, which could help diagnose genetic diseases. The 'motion blur point accumulation' technique resolves structures as small as 30 nanometers by capturing images of fluorescent probes binding to target DNA.