Articles tagged with Enzymatic Activity
Scientists have discovered a compound that strongly inhibits botulinum neurotoxin, potentially reversing paralysis caused by the toxin. Nitrophenyl psoralen, identified through high-throughput screening of natural compounds, shows powerful anti-botulinum toxin activity with low toxicity to human cells.
A new study reveals that CD26/DPP-4 is a key player in the regeneration of acute liver wounds and may serve as a valuable biomarker for detecting hepatic disease. The molecule's enzymatic activity was shown to increase with reduced liver immune cell population, suggesting its potential use in non-invasive diagnosis.
Researchers have successfully assembled enzyme-powered artificial cells that can oscillate in water column using catalase-generated gas bubbles. The protocells use glucose oxidase as a fuel source, enabling buoyant motion and self-sorting capabilities.
Scientists at Ecole Polytechnique Fédérale de Lausanne have created a method for tracking specific enzymes in cell compartments, helping identify their roles in various cancers. The biosensors reveal compartment-specific distributions of bioactive enzymes, which may aid the development of targeted cancer treatments.
Researchers from RUDN University designed new compounds that selectively inhibit human carbonic anhydrase, reducing intraocular pressure and potentially treating glaucoma. The study's findings suggest a promising approach for developing new antiglaucoma drugs by modifying the compound's molecular periphery.
Researchers discovered that the human protein APOBEC3G transforms its function from editing viral DNA to blocking HIV-1 replication when it forms a two-protein complex. This finding has implications for developing new anti-HIV drugs.
Scientists at the Francis Crick Institute and University of Manchester have developed a new method to screen compounds that is more sensitive than existing methods. This technique, called CoSPI, can help identify allosteric compounds that regulate enzyme activity, which could lead to new treatments for diseases like tuberculosis.
Researchers successfully resurrected Precambrian β-lactamases to study the emergence of primordial enzymes and explore the creation of novel active sites. The team demonstrated that ancestral protein resurrection enables the generation of new enzyme functions, overcoming current limitations in molecular biology.
Researchers at UTA have discovered a method to deactivate caspase-3 enzymes by removing water molecules, which could lead to the development of new treatments for autoimmune diseases like arthritis. This breakthrough, published in Proceedings of the National Academy of Sciences, provides a database of caspase-3 variants with varying le...
A team of Cornell University researchers has devised a method for isolating one specific enzyme activity of SIRT6, a protein with multiple biological functions. The study used a mutant form of SIRT6 to determine its contribution to various functions, including genome stability and metabolism.
Researchers at Newcastle University have identified a significant decrease in mitochondrial complex II activity with age in human skin cells, offering a new pathway for anti-aging treatments. The discovery may also lead to a greater understanding of other organs' aging processes and potential drug developments for age-related diseases.
Researchers have developed a new technique using DNA nanocages to confine enzymes and substrate molecules, accelerating chemical reactions and shielding them from degradation. This breakthrough has far-reaching applications in industries such as medicine, diagnostics, and materials production.
Researchers from the University of Chicago have developed a novel approach to control enzyme activity using monobodies, synthetic proteins that recognize and bind specific target molecules. They successfully altered the specificity of an enzyme used in the food industry without modifying it, paving the way for bespoke reactions.
Researchers at University of California, San Diego School of Medicine reveal a more accurate structure of Protein Kinase C (PKC), providing new targets to fine-tune the enzyme's activity. The corrected structure suggests ways to turn PKC 'on' for cancer treatment and 'off' for neurodegenerative disease treatment.
AMPK activity levels vary across cellular compartments, affecting different sets of proteins. In unstressed cells, the nucleus, cytoplasm, and cell membrane had low activity, while the Golgi apparatus and endoplasmic reticulum showed high activity.
Researchers at CWRU School of Medicine discovered the mechanism behind enzyme Lecithin: retinol acyltransferase (LRAT) storing vitamin A, essential for vision. The study reveals that modifying LRAT's enzymatic activity can be used to transport small molecule drugs to the eye, reducing systemic side effects.
Researchers found elevated BACE1 activity in mild cognitive impairment patients, suggesting it may be an early indicator of Alzheimer's disease. Increased BACE1 enzymatic activity correlated with plaque numbers and cognition status.
Researchers at the University of Pennsylvania School of Medicine found that HDAC3 can repress gene expression and prevent fatty liver even without enzyme activity. This study challenges the molecular targets of HDAC inhibitors, warranting reassessment of their mechanisms.
Researchers at PNNL have developed a new test to assess the effectiveness of enzyme mixtures, which could reduce the time and cost of producing biofuels. The test uses activity-based protein profiling to track the activity of dozens of enzymes simultaneously.
Researchers at Ohio State University discovered two genetic variants affecting enzyme activity, which can help predict individual drug metabolism and guide more accurate dosing. The findings suggest that one-third of people have slower or intermediate metabolism, and could improve treatment outcomes and cost of therapy.
A recent study by Ohio State University researchers explains how certain plant traits can be passed down through generations without following traditional genetic rules. They discovered an enzyme in corn that targets 'junk DNA' and triggers unexpected changes in gene activity, an example of epigenetics.
Researchers at Rensselaer Polytechnic Institute have developed a new method to boost enzymatic activity by confining enzymes in carefully engineered nanoscale holes. The study found that embedded enzymes exhibited significant increases in activity and retained their 3-D structure.
A research team led by Professor Kam-bo Wong engineered thermophilic enzymes to increase their activity at high temperatures without compromising stability. The findings provide insights into the design of biotechnologically important enzymes.
A new assay using gelatin zymography reliably detects mature cathepsin K, a key enzyme in osteoporosis, arthritis, and cancer metastasis. The technique outperforms existing methods, allowing for sensitive detection of small amounts of the enzyme.
Researchers developed a new approach to harness and modulate enzyme activity, allowing for the design of industrial catalysts and healthcare diagnostics. The technique uses polyvinyl alcohol to limit molecule diffusion, enabling simultaneous monitoring of enzyme- peptide interactions.
Parkin and PINK1 genes play a critical role in Parkinson's disease. The study found that PINK1 is rapidly degraded under healthy conditions, but its accumulation stabilizes at low membrane potential. Parkin is recruited to mitochondria with low potential to dispose of damaged organelles.
Researchers at Baylor College of Medicine found that extracellular signal-regulated kinases (ERK1 and ERK2) are essential for ovulation, oocyte maturation, and other key activities in ovarian function. Disrupting the activity of both enzymes was necessary to block fertility in female mammals.
A study found that quails fed an omega-3 fatty acid-rich diet for 6 weeks showed significant increases in aerobic capacity, similar to those seen in migrating sandpipers. The birds' muscle membranes revealed even distribution of the fatty acids, suggesting a non-selective allocation.
Research shows that inhibiting MMP enzymes slows down dental filling deterioration, preventing bacteria entry and decay. Chlorhexidine use can rapidly inhibit MMP activity, offering a practical solution for improved dental care.
Researchers at Johns Hopkins have identified the chemical step involved in blocking the phosphodiesterase 5 enzyme, which slows down the breakdown of cyclic GMP and contributes to heart failure. The discovery paves the way for targeted drug therapies to stall progression of heart failure and hypertrophy.
Researchers at Penn State and the University of Texas Southwestern Medical Center have discovered a way to control certain proteins using light. The team's hybrid protein was engineered to respond to light, increasing or decreasing enzyme activity depending on the illumination, offering new possibilities for treating diseases.
Researchers identified a compound that enhances ACE2 enzyme activity, dramatically lowering blood pressure and improving heart function. The compound also prevents damage to the heart and kidneys in hypertensive rats, offering new hope for treating cardiovascular disease.
Researchers at the University of Warwick have discovered a link between vitamin B1 deficiency and vascular problems in diabetic patients. The study found that type 1 and type 2 diabetic patients had significantly lower levels of thiamine in their blood plasma, which may contribute to microvascular and macrovascular complications.
Researchers at PNNL discovered that entombed enzymes in silica nanochambers can regain their activity, mimicking cellular crowding. The team developed a method to functionalize the pores with compounds tailored to specific enzymes, allowing for potent catalysis and efficient production of desired products.
A Scripps Research study has identified a key regulator of lipid signaling networks that contributes to cancer. The findings suggest that the enzyme KIAA1363 may be a critical factor in tumorigenesis and could serve as a potential diagnostic marker for ovarian cancer.
Dartmouth Medical School researchers have identified the enzymatic activity of Aprataxin, a gene associated with an early onset hereditary neurological disorder. This discovery may lead to improved treatment strategies for ataxia-oculomotor apraxia 1 by targeting specific protein substrates.
New research from Newcastle University found that green and black tea inhibit the activity of certain enzymes in the brain linked to memory decline. The study suggests that drinking regular cups of tea may help improve memory and slow the development of Alzheimer's disease.
A team of scientists has developed a novel method to detect the culprits behind dust allergies, using PNA-encoded protease substrate microarrays. This innovative approach reveals the specific proteins responsible for triggering allergic reactions in humans, providing new insights into the mechanisms underlying dust allergy.
Scientists at Verdia used microbial diversity collections to discover a family of genes with low enzymatic activity, which they improved using the MolecularBreeding directed evolution platform. The result was a nearly 10,000 fold increase in enzyme activity over parental enzymes.
A new computer method called FamClash has been developed to predict the activity of hybrid enzymes, which are created by combining similar enzymes from different organisms. The approach identifies incompatible residue pairs that can lead to reduced enzyme activity, and provides valuable insights for protein engineering interventions.
Researchers at UC Davis discovered that a DNA enzyme called RecBCD slows down its movement when it encounters a specific short DNA sequence called Chi. This finding provides new insights into how DNA is repaired and replicated, and could lead to the development of more efficient nanomachines.
Researchers successfully immobilized an enzyme called organophosphorus hydrolase, nearly doubling its activity levels. The breakthrough could lead to the development of novel sensor and decontamination systems for homeland security and environmental protection.
Researchers found that adenylyl cyclase activity levels were more sensitive to recent alcohol consumption in subjects with a family history of alcoholism. Chronic marijuana users had substantially higher adenylyl cyclase activity levels, suggesting possible abnormal metabolism or product of marijuana use.
A study published in Nature found that the combination of flavonoids and polyphenols in apples provides anti-oxidant and anti-cancer benefits. The researchers discovered that eating 100 grams of fresh apple with skins can provide the same anti-oxidant activity as 1,500 milligrams of vitamin C.
Researchers found elevated TGase activity in postmortem brain tissue of HD patients, linking it to htt aggregation and nuclear inclusion formation. This novel finding appears to counter previous findings on amyloid protein deposits and the 'protein zipper' hypothesis.
A study by Penn State researchers found that microwaving or roasting garlic can destroy its anti-cancer activity, unless the herb is chopped or crushed first. However, a 10-minute standing period allows an enzyme to react with chemicals, producing allyl sulfur compounds that retain anti-cancer properties.
Researchers have found that paraoxonase, an enzyme present in the blood, can prevent the oxidation of LDL cholesterol and reduce atherosclerosis. The discovery opens a possible new route to prevention of heart diseases.