Articles tagged with Genetic Structure
A team of international researchers has reported the first high-resolution images and structural details of the human genetic element LINE-1, which is implicated in various diseases. The study provides a target for potential new treatments, particularly for cancer, autoimmune disorders, neurodegeneration, and even aging.
A multidisciplinary study has elucidated the structure of the machinery responsible for writing much of our 'dark genome', a 98% unknown biological function. This discovery may lead to novel treatments for autoimmune diseases, cancer and neurodegeneration.
Researchers at Salk Institute assembled the most complete atlas of the mouse brain by analyzing over 2 million brain cells. The detailed atlas reveals thousands of cell types, their connections, genes, and regulatory programs active in each cell, providing new insights into human disease vulnerabilities.
Researchers have found that RNA polymerase can recognize and transcribe artificial base pairs in the same manner as natural ones, paving the way for custom protein design. This breakthrough could revolutionize medicine by creating new medicines through designer proteins.
Researchers discovered a mechanism that creates DNA palindromes and new microRNA genes from noncoding sequences, explaining the origin of small regulatory genes. The study found that this process can create novel genes, potentially affecting human health.
A study published in Nature Communications sheds light on the critical role of P4-ATPases, particularly ATP8B1-CDC50A, in maintaining lipid asymmetry in cell membranes. The research team used cryo-electron microscopy to determine the structure and function of the human flippase complex, revealing its regulation by phosphoinositides.
A team of researchers successfully synthesized a 1.5-million-year-old antibiotic called paleomycin, which displays potent properties against human pathogens. By tracing the evolutionary path of glycopeptide antibiotics, the team gained insights into the development of new drugs and uncovered a common precursor molecule.
A study by Bonn researchers found that cylicins play a crucial role in sperm structure and development, leading to defects in head and tail shape. The absence of these proteins renders mice infertile, while similar variants in humans are linked to male infertility.
Researchers have identified a decaploid genome structure in the Nepenthes gracilis pitcher plant, revealing subgenome dominance that contributes to evolutionary innovation. Recessive subgenomes are enriched with novel genes, particularly those related to unique traits like dioecy and carnivory.
A new MIT study proposes a theoretical model that helps explain how cells maintain the memory of their cell type despite losing chemical modifications during DNA replication. The research team suggests that the 3D folding pattern of the genome determines which parts will be marked by these chemical modifications.
A recent study in Nature Communications has identified a gene cluster in wheat that produces triticein, an isoflavone compound with potential health benefits. This discovery offers opportunities for metabolic engineering efforts to improve wheat's nutritional quality and resistance to disease.
Researchers successfully produced alstonine, a naturally occurring substance with potential for treating mental disorders, using genetically engineered yeast cells. The yeast platform has the potential to discover and develop plant-based medicines, including those for schizophrenia.
Salk researchers identify Foxp3 as the protein that determines regulatory T cell genome structure and fate, enabling manipulation to treat autoimmunity or fight cancer. The study reveals Foxp3's essential role in creating unique chromatin architecture of regulatory T cells.
A new neural circuit has been discovered in the brain that produces a strong sense of discomfort when activated. The study found that the subthalamic nucleus, which controls voluntary movements, also plays a role in the development of depression.
Researchers found changes in microglial cells, a specialized subset of immune cells, that may worsen schizophrenia risk in adolescents. The study, published in Nature Communications, suggests that THC exposure during adolescence can lead to long-lasting negative effects on brain development and function.
Researchers have discovered a novel enzyme family related to bacterial pathogenicity in Gram-negative bacteria. The study revealed that enzymes involved in OPG synthesis and regulation play crucial roles in bacterial infection capability.
Researchers discovered five types of macrophages in fat tissue, with one subtype promoting inflammation and another quelling it. The findings challenge the long-held assumption that pro-inflammatory macrophages are solely responsible for obesity-related inflammation.
A new AI method leverages causal relationships in genome regulation to efficiently identify optimal genetic perturbations for cellular reprogramming. The technique reduces experimental costs by prioritizing the most informative interventions, leading to faster convergence and more effective results.
Researchers identified two SARS-CoV-2 protein mutations linked to severe COVID-19 symptoms and increased inflammation. The mutations, known as KR, were found in patients with higher viral loads and more severe symptoms.
Researchers found that the OsMATL2 gene triggers haploid induction when inactivated, resulting in plants with half the normal chromosome number and reduced seed setting. This discovery could revolutionize rice cultivation by accelerating breeding processes.
A Northwestern University study reveals how the NEK1 gene mutation affects neurons, causing instability in microtubules and disrupting nuclear import. This discovery suggests anti-cancer drugs could be used to treat ALS by stabilizing microtubules.
Researchers found that occasional long-distance dispersal events between North and South Brazil allow red mangrove trees to exchange genetic material, maintaining their unique populations. Mangroves play a vital role in coastal ecology and carbon storage, making conservation efforts crucial.
Researchers found that inhibiting NLRP3 signaling reduces podocyte senescence, improves lifespan, and slows down healthy podocyte aging in mice. This discovery holds promise for treating age-related kidney diseases.
A Monash University study using roundworms found that certain foods, such as apples and herbs, can help protect against brain function deterioration. The researchers discovered that a molecule present in these foods, ursolic acid, causes a gene to turn on, making a specific type of fat that prevents axon fragility.
Researchers at WVU have developed a way to view synthetic DNA at the atomic level, enabling them to understand how to change its structure for enhanced scissor-like function. This breakthrough could lead to new technology for medical diagnoses and treatments, including potential therapies for diseases like retinal degeneration and cancer.
Researchers at Salk Institute discovered molecular mechanisms of HIV drug-resistance to Dolutegravir, a breakthrough that could lead to the development of new HIV therapeutics. The study revealed how changes in integrase protein structure can lead to resistance and how another compound, 4d, may overcome this resistance.
A recent study by the Eustermann group at EMBL Heidelberg reveals that DNA packaging into hexasomes impacts the function of enzymes involved in gene regulation. The researchers used cryo-electron microscopy to visualize the molecular processes of how this packaging regulates genome expression and maintenance.
Researchers track the movement of two specific gene elements on a chromosome, finding that they exhibit fast motion and dense packing. This study provides insights into how gene activity is controlled in 3D space, challenging previous assumptions about long-distance communication.
A recent study by researchers at the University of Zurich found that the Notch signaling pathway plays a crucial role in shaping and varying tooth enamel. The team used genetically modified mouse models to analyze the effects of the Notch-ligands on teeth, revealing that their absence affected tooth morphology and enamel formation.
A new study reveals that the protein complex BCDX2 plays a critical role in DNA repair, suggesting mutations in this complex could lead to cancer. The research also highlights the importance of screening for mutations in people with a family history of breast and ovarian cancers.
The study reveals that the midgut gland of Japanese scallops is a valuable source of fucosylated heparan sulfate, exhibiting anticoagulating and neurite outgrowth-promoting activities. Fuc-HS shows resistance to GAG-degrading enzymes, indicating its unique structure with a fucosyl group attached to GlcA.
A new international study reconstructs the legacy of Chile's largest indigenous community, the Mapuche, through genetics and linguistics. The research reveals distinct Mapuche lineages originated locally and have remained in relative isolation, punctuated by episodes of contact with other South American populations.
Researchers found that L1 jumping genes can be widely activated in normal cells, leading to the accumulation of genomic mutations over time. The study highlights the critical role of epigenetic changes in regulating L1 jumping gene activity.
A new study maps French Canadian populations using a unique dataset of over five million records spanning 400 years, revealing the complex relationship between human migration and genetic variation. The research shows that the genetic structure of French Canadians is encoded within its genealogy.
A new study reveals a unique founder population structure in Newfoundland and Labrador, tracing the ancestry of European settlers from South-East Ireland and South-West England. The analysis found multiple population bottlenecks and strong associations between Catholic background and Irish genetic ancestry.
Researchers from Karolinska Institutet and the Max Planck Institute have identified a new mechanism for DNA folding, revealing how the Smc5/6 complex regulates chromosomal organization. This discovery provides new insights into normal development and disease prevention.
Researchers discovered that skates' remarkable fins result from changes in their genome's non-coding regions and three-dimensional complexes called topologically associated domains (TADs). These alterations drove the evolution of unique gene-expression patterns, enabling the development of exceptionally wide fins.
The study resolves a long-standing question about the structure of respiratory supercomplexes in unicellular eukaryotic organisms. Complex II is found to be part of the supercomplex in these organisms, optimizing ATP formation and revealing a surprising variety in supercomplex construction.
A genetic census has been used to estimate the number and population structure of critically endangered western chimpanzees in West Africa. The analysis identified a total of 136 chimpanzees living in four different communities, with high levels of shared ancestry and genetic diversity.
A study published in Journal of Mammalogy reveals that Nara Park deer have a distinct genetic lineage preserved for over 1,400 years due to their protected status. The research found three genetic groups, with one group showing a unique haplotype indicating minimal gene flow.
Researchers studied cavefish metabolism to understand how humans might adapt over long periods of inactivity, finding genetic changes that enable muscle endurance and efficient energy storage. The study suggests potential implications for understanding and mitigating the negative effects of sedentary lifestyles on human health.
The study reveals the structure of the 15-subunit IFT-B complex, a crucial component in cilia formation and maintenance. The complex's elongated and flexible nature is consistent with previous low-resolution reconstructions, and two configurations are identified that may drive bi-directional movement.
Researchers reveal the dynamic nature of RNA molecules, which can take on multiple shapes and regulate cellular processes. The 'RNA structurome' holds key to understanding disease mechanisms and developing new therapeutic strategies.
Researchers at the University of Exeter are developing a genetic tool to analyze lobster population genetics and connectivity, trialing aquaculture technology for sustainably farming lobsters in The Bahamas, and devising a policy for future sustainable exploitation.
Scientists from NTU Singapore have discovered that telomeres are stacked in columns like a spring, leaving DNA exposed to damage. This finding could improve understanding of how humans age and develop cancer, with potential treatments for diseases caused by dysfunctional telomeres.
Researchers used advanced imaging techniques to understand the structure of bacterial propellers, which are made of a single protein. The study reveals that bacteria push themselves forward by coiling these appendages into corkscrew shapes, and that similar structures have evolved independently in archaea.
A study conducted at the University of Zurich has identified a key gene network responsible for severe tooth enamel defects. The researchers found that mutations in the Adam10 molecule lead to disorganization of ameloblasts and severe defects in both structure and mineral composition of enamel.
The study reveals that environmental conditions cause RNA structures to change, affecting plant flowering times and potentially leading to more desirable traits. This technology can also be applied to human cells, enabling the design of RNA-based therapies for diseases like SARS-COV-2.
Researchers have identified over 1,500 genetic differences between migratory and non-migratory hoverflies, shedding light on the genetic pathways involved in migration. The study reveals suites of genes being activated in concert, including insulin signalling for longevity and pathways for immunity.
Researchers at the Garvan Institute of Medical Research have identified key molecules linked to the mammalian-meat allergy caused by tick bites. The study reveals that a particular antibody type has a natural pocket into which a sugar molecule, galactose-α-1,3-galactose (alpha-gal), snugly fits.
Researchers found that different lineages of Cryptosporidium parvum are increasingly exchanging their DNA, which helps the parasite evolve faster and potentially result in more virulent strains. The study suggests that globalization and close contact with animals increase the rate of genetic exchange.
Research reveals Patagonian sheepdogs share common traits with European herding breeds, tracing back to extinct UK shepherds. The study uses genomic characterization and DNA sequencing to identify the connection between the two populations.
Researchers found that ancient Maltese humans had limited genetic changes due to island isolation. The study suggests that seascapes played a central role in shaping the genetic structure of European populations.
A study published in PLOS Genetics reveals that Patagonian sheepdogs share a common ancestor with modern UK herding breeds, dating back around 150 years. The breed's unique genetic makeup reflects the pattern of European colonization in South America.
Researchers developed a new method to complete genetic data gaps using haplotype blocks, improving breeding efficiency in plants. The approach has shown comparable quality to collecting more information from DNA strands, reducing costs in animal and plant breeding.
A high-resolution map of Arab and Middle Eastern population genetics has been unveiled, providing new insights into human history in the region. The study revealed that ancient populations in the Arabian Peninsula played a central role in early human migration out of Africa.
A new study from Oregon State University and the U.S. Department of Agriculture's National Wildlife Research Center found that beavers in the Coast Range of western Oregon exhibit relatively strong genetic differentiation, shaped by watershed boundaries and past relocations. The researchers recommend relocating beavers within watershed...
The study describes the three-dimensional structure of the MUTYH protein and its interaction with PCNA, a key player in DNA replication. The researchers found that mutations in the MUTYH gene reduce its binding affinity to DNA and destabilize its structure, leading to decreased DNA repair activity.
The study of Xerocrassa montserratensis reveals new insights into the conservation of this endemic and threatened species. The researchers identified genetic groups in different areas where sub-species had been described, providing a better understanding of the species' population structure.
A recent study led by Shinshu University found that flower size is correlated with pollinator size in different mountain regions, evolving independently in each area. Despite genetic similarity between plants across regions, flower sizes varied greatly, suggesting parallel evolution of this trait among mountains.