Articles tagged with Transfer Rna
Researchers found that a mutation in a tRNA gene can disrupt brain function and behavior, leading to imbalances in excitatory and inhibitory neurotransmission. This imbalance has been implicated in numerous neurological diseases, including epilepsies and autism spectrum disorders.
Scientists at Tokyo University of Science discovered a primitive protein synthesis system in Nanoarchaeum equitans, which may have inspired the development of modern aminoacyl-tRNA synthetases. The study found that an ancient enzyme can add alanine to tRNA and minihelix regions independently of a specific base pair.
Researchers have successfully determined the three-dimensional structure of a vaccinia virus RNA polymerase at atomic resolution, providing key findings on virus multiplication. The complex is composed of various subunits and relies on host tRNA molecules to function, enabling an essential step in the pathogen's life cycle.
A Belgian-American research team has uncovered a new mechanism of neurodegeneration in Charcot-Marie-Tooth disease, revealing that tRNA synthetases can interfere with gene transcription in the nucleus. This discovery could lead to new therapeutic approaches for CMT patients.
Researchers at Cornell University have discovered a unique bacterial regulatory mechanism called T-boxes, which facilitate basic functioning in bacteria. Understanding the structure of these elements could lead to designing targeted antibiotics, offering hope against antibiotic-resistant pathogens.
The study reveals that Trm7-Trm734 preferentially methylates specific tRNA transcript variants, and that Trm734 is required for the positioning of tRNA for methylation. This breakthrough contributes to understanding genetic defects and developing new treatments for nosyndromic X-linked intellectual disability.
Heather Pua, an assistant professor at Vanderbilt University Medical Center, has received a 2019 National Institutes of Health (NIH) Director's New Innovator Award. She will investigate the role of extracellular RNAs in allergic airway inflammation, with potential implications for new therapies and diagnostics.
A new study from Western University found that tRNA gene mutations can cause misreading of the genetic code, leading to protein malfunction. Researchers discovered an average of 66 variants in tRNA genes among individuals in London, Ontario, suggesting a potential link between these mutations and human diseases such as Alzheimer's.
Scientists found that honey bees share immunity with each other and their offspring through RNA 'vaccines' transmitted via royal jelly. This discovery could lead to new ways to protect bees against viruses and diseases.
Researchers at Thomas Jefferson University have discovered a way to target both of a bacteria's defenses with one hit, weakening its ability to develop antibiotic resistance. By interfering with a specific type of tRNA molecule, the team was able to make bacteria more susceptible to antibiotics.
Researchers developed a novel gene therapy approach that utilizes engineered transfer RNA (tRNA) molecules to suppress nonsense mutations. This technology has the potential to correct 10-15% of inherited genetic diseases, including Duchenne muscular dystrophy and cystic fibrosis.
A new mechanism has been discovered that allows eukaryotic cells to synthesize proteins absent in prokaryotes, leading to the enrichment of genes coding for transfer RNAs involved in this process. This finding may lead to the development of strategies to inhibit protein production in diseases caused by their overabundance.
Researchers from the University of Chicago have developed a high-throughput RNA sequencing strategy to study the activity of the gut microbiome. The new tools analyze transfer RNA, allowing scientists to understand the activity of naturally occurring microbiomes and study their responses to environmental changes.
Researchers used next-generation RNA sequencing to investigate mitochondrial tRNAs in patients with MERRF, a common inherited disorder. The study found quantitative changes in tRNA abundance and methyl modifications that affect protein synthesis within mitochondria.
The study reveals that cells adjust tRNA abundance to optimize protein production in stressful situations, suggesting a new regulatory mechanism. This mechanism may play a vital role in preventing the proliferation of tumors by selectively modifying translation rates.
Researchers from University of North Carolina and University of Auckland have made a significant advance in resolving the mystery of genetic translation. Their analysis reveals previously hidden rules by which key translational molecules interact, suggesting that simpler ancestors of these molecules worked together at the dawn of life.
Prof. Doron Lancet and colleagues propose a new chemical model that supports the 'Lipid World' concept, where lipids can store and transmit information, leading to compositional reproduction and Darwinian evolution. The researchers argue that life could emerge before DNA and RNA.
Recent studies suggest tRNAs and tRNA fragments are involved in cellular processes associated with diseases such as cancer, viral infections, and neurodegenerative disorders. Dr. Todd Lowe's lab is characterizing all 500 human tRNA genes to determine their roles in the cell.
Researchers at UCLA have successfully transferred a memory from one marine snail to another by injecting RNA, creating an artificial memory. The study could lead to new ways to lessen the trauma of painful memories and restore lost ones.
A study published in eNeuro demonstrates that memories can be transferred between organisms by extracting ribonucleic acid (RNA) from a trained animal and injecting it into an untrained animal. This finding provides new clues in the search for the physical basis of memory.
Researchers aim to determine when the pause in transcription first appeared in evolution by studying various organisms and plant life. They hope this investigation will help narrow down the origin of the pause, shedding light on how complicated life arose on Earth.
Scientists have built a computational microscope that can simulate atomic and subatomic forces driving molecular interactions. The tool streamlines efforts to understand chemistry, model large systems, and develop new pharmaceutical agents.
Researchers discovered that taurine is essential for protein synthesis in mitochondria, and its deficiency leads to severe neurological disorders. Maintaining protein quality also improves symptoms, suggesting a potential therapeutic approach with TUDCA.
A recent study found that tRNA fragments in mosquitoes can modulate their ability to transmit viral diseases to humans. The researchers identified 55 tRNA-derived fragments with varying expression patterns across different strains and developmental stages.
Scientists have discovered a vital quality control mechanism in mitochondria, crucial for constructing a functional respiratory chain. A faulty enzyme can attach incorrect amino acids to transfer RNA, leading to protein synthesis errors and hereditary diseases.
Researchers have identified ten times more new genes on the Y chromosome than previously thought in fruit flies. These genes appear to have taken on important functions, raising questions about their durability and potential impact on species.
Researchers successfully isolated cells in microgravity using standard protocols, paving the way for genetic and omics studies on the International Space Station. This breakthrough could enable faster diagnosis of illnesses in astronauts, potentially saving lives.
A team from Cold Spring Harbor Laboratory has discovered small RNA fragments that protect the genome from retrotransposons during epigenetic reprogramming in preimplantation embryos. These fragments, consisting of 18 and 22 nucleotides, are perfect complements of sequences within retrotransposons.
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.
Rice University scientists have developed a new technique to label proteins in cells using bio-orthogonal tags, allowing for high spatial and temporal control. The technique uses an engineered switch that only charges tRNA with the tag when prompted, providing a snapshot of total protein synthesis in the cell.
Researchers found that E. coli toxins bind to elongation factor Tu and another protein EF-Ts to target specific tRNA molecules, inhibiting cell growth and leading to diarrhea or hemorrhagic colitis in humans.
Researchers at Scripps Research Institute discovered that a human enzyme has evolved to change its shape and function without major architectural changes. This unique ability allows the enzyme to carry out new roles in humans, shedding light on diseases linked to mutations in aminoacyl tRNA synthetases.
Researchers investigate how queuine, produced by gut bacteria, affects breast cancer risk and growth. High levels of queuine-modified tRNAs may speed up protein production in rapidly dividing cancer cells.
Scientists have discovered an enzyme called ALKBH1 that can remove molecular modifications from transfer RNA (tRNA), causing a measurable effect on protein translation in the cell. This finding sheds new light on how cells control gene expression and suggests that tRNA influences cellular processes beyond protein translation.
Researchers have engineered a novel, virus-like shell that can self-assemble and carry therapeutic DNA or RNA into human cells. This breakthrough could advance gene therapy treatments for rare genetic diseases and common conditions like diabetes.
Researchers at Vienna University of Technology have developed a new method to analyze the process of RNA transfer from viruses into human cells. This breakthrough could lead to the development of new drugs that prevent this precise RNA transfer.
New research suggests that fluctuations in tRNA levels can have a dramatic impact on cellular function, driving metastatic breast cancer. The study found that two specific tRNAs were associated with increased metastasis, leading to changes in gene expression and protein production.
A study by IRB Barcelona reveals the genetic code stopped evolving at 20 amino acids due to limitations in tRNA molecules. The researchers explain that new amino acids can't be introduced without causing problems with protein synthesis and translation.
The team determined the three-dimensional structure of RlmN protein from Escherichia coli bacteria, capturing it during a normally transient event. The discovery sheds light on RlmN's function in modifying RNA molecules that are crucial for bacterial infections and potential antibiotic resistance.
A team of researchers has created the first comprehensive in vivo fitness landscape of a gene, which provides a way to visualize and predict evolution. The findings show that about 1 percent of point mutations are beneficial to an organism, while 42 percent are harmful, and two harmful mutations interacting can lead to more harm.
Researchers at UC Santa Cruz have developed a new RNA sequencing technique that reveals an abundance of modified fragments derived from transfer RNA molecules in both yeast and human cells. This discovery opens up a rapidly growing area of RNA research, increasing the detection of transfer RNA fragments by three-fold.
Researchers discovered a new category of tRNA fragments that depend on individual characteristics, including race, gender, and population. The analysis also found that tRNA fragments have regulatory roles in cellular processes and differ between tissues, disease subtypes, and individuals.
A new genetic 'switch' device can detect damaging contaminants like TNT, offering a cheaper and easier method for cleaning up post-war explosive chemicals. The system is cell-free, specific, and requires minimal expertise, but further research is needed to refine its sensitivity.
Researchers have discovered a new species of tRNA-derived small RNAs, called SHOT-RNAs, that contribute to cell proliferation in hormone-dependent breast and prostate cancers. These findings suggest a new role for tRNAs and potential therapeutic applications for the treatment of these cancers.
University of North Carolina researchers provide evidence that amino acids evolved into proteins, and single cells formed plants and animals. The close linkage between the physical properties of amino acids, genetic code, and protein folding is crucial to life's origins.
Researchers at Rockefeller University found that short stretches of genetic material called tRNA fragments can reduce the growth and spread of breast cancer cells. These fragments bind to a key player in the life cycle of cancer cells, known as an oncogene, reducing its ability to promote cell division and metastasis.
Researchers from Scripps Research Institute have discovered a unique mechanism of borrelidin, a natural product with wide-ranging antifungal, antibacterial, anti-malaria and anti-cancer effects. The study sheds light on the compound's inhibition of protein synthesis by occupying four distinct subsites on tRNA synthetase.
Researchers at Cold Spring Harbor Laboratory have discovered a new quality control mechanism where RNAs proofread themselves, ensuring proteins are made correctly. The CCA-adding enzyme uses a screw-like motion to add CCA groups to tRNAs, and the RNA itself determines whether to allow further additions.
Researchers found that resveratrol activates an ancient stress response in human cells, activating key genes like p53 and FOXO3A. This pathway may explain how moderate red wine consumption could provide health benefits.
Scientists found that a trace nutrient can cause genome-wide changes to how organisms encode proteins, boosting speed and accuracy. The nutrient's availability determines which codons are optimal for protein production, leading to widespread genetic changes.
A team of researchers found nearly double the number of genomic loci that might be coding for transfer RNAs (tRNAs) in humans, with most resembling mitochondrial tRNAs. The discovery suggests unexpected new links between the human nuclear and mitochondrial genomes.
Researchers at ETH Zurich have studied the molecular structure of mitoribosomes, revealing new details about how proteins are synthesized. The findings will help design antibiotics that target only bacterial ribosomes, improving their effectiveness in treating human diseases.
Researchers found pseudouridylation of mRNA in yeast and humans, increasing mRNA stability under heat shock conditions. This discovery has significant implications for understanding human diseases associated with PUS gene mutations.
Researchers at Jackson Laboratory pinpoint a new mechanism behind neurodegeneration in mice, linked to a mutation in the tRNA gene n-Tr20. The study reveals that individual tRNA genes can be tissue-specifically expressed, leading to disease or modifying phenotypes.
Researchers from RIKEN and the University of Tokyo identified a surprising mechanism for accurate protein synthesis through crystallographic studies. The enzyme alanyl-tRNA synthetase precisely identifies proper tRNA molecules using a geometric feature, allowing cells to accurately translate genetic code into essential proteins.
A new genetic brain disorder has been discovered in humans, caused by a mutation in the CLP1 gene. The disorder affects the human nervous system and is characterized by reduced brain size, sensory and motor defects, and neuronal death.
Researchers have identified a new genetic brain disorder associated with degeneration of the central and peripheral nervous systems, caused by a mutation in the CLP1 gene. The condition is characterized by reduced brain size, sensory and motor defects, seizures, brain atrophy, and neuronal death.
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.
Researchers analyzed aminoacyl tRNA synthetases and found ancient domains linked to dipeptide formation, indicating protein flexibility played a role in genetic code emergence
Researchers at UC Santa Cruz have trapped the ribosome in a key transitional state, allowing them to see how it translates genetic code into proteins without mistakes. Understanding this process is crucial for developing new antibiotics and has significant implications for the origin of life.