Articles tagged with Protein Substrates
This study reveals NAT10 is crucial for spermatogonial proliferation and differentiation. In Nat10-deficient mice, infertility occurs with reduced testicular sizes, germ cell depletion, and a loss of spermatogonial homeostasis.
Researchers have identified a protein shuttling mechanism in bacteria that enables them to pump out a wide spectrum of antibiotics. This complex of proteins, known as MacAB-TolC, forms a conduit that drains out not only antibiotics but also virulence factors.
A team led by biologist Thomas Mayer found that a small binding-pocket on cyclin B helps regulate the sequence of cell division events. Without this pocket, malformations occur due to incorrect kinase phosphorylation, leading to potential tumours or infertility.
Researchers have identified the first high-resolution experimentally determined structure in proteins that helps bacteria survive harsh conditions. SpoIVFB, a specialized enzyme, plays a critical role in sporulation and facilitating biochemical product creation.
Researchers from Osaka Metropolitan University have developed a method to detect coronavirus spike proteins quickly and selectively using a light-induced immunoassay. The technique uses a milliwatt-level laser and can complete the entire process in under 5 minutes.
Guan's lab will apply accumulated experience and methods to study SLC6A14, a sodium-coupled epithelial amino acid co-transporter involved in cancer and several chronic diseases. CryoEM will be used to determine the structure of SLC6A14, providing insight into its substrate specificity and inhibitory mechanisms.
A multidisciplinary team developed GeneMAP to probe gene function in metabolism. They identified SLC25A48 as necessary for mitochondrial choline transport and associated it with eight human diseases.
Researchers have developed a route to modify peptides to target disease diagnostics and drug discovery, focusing on protein-protein interactions (PPIs). By modifying a small peptide sequence, the team showed it binds more quickly and strongly to specific PPI targets.
A team of researchers has developed a hemostasis sponge that swiftly staunchs kidney bleeding and facilitates wound recovery. The material uses kidney-derived decellularized extracellular matrix to recreate the kidney's microenvironment, boasting high biocompatibility.
Researchers at UC Riverside identify NMD pathway as crucial for early brain development and preventing microcephaly. The study links NMD regulation of brain size control to the tumor suppressor gene p53, suggesting potential new connections between NMD and cancer.
Researchers at Kyoto University have observed a unique phenomenon where talin constantly moves over focal adhesions as a single unit, contradicting prevailing notions. This discovery reveals that talin manages to simultaneously maintain the intercellular connection while transmitting force through dynamic molecular stretching.
A team of researchers found that fibroblast cells cultured on substrates with varying degrees of stiffness exhibit changes in cell structure, function, and TGF-β activity, which regulates ECM architecture. This study provides insights into how mechanical forces influence wound healing and tissue development.
Researchers at St. Jude uncover how ABCG2 protein removes chemotherapies from cells, highlighting a potential path to combat drug resistance. The study identifies key amino acids responsible for this promiscuity and suggests designing inhibitors targeting these sites.
Using a sensitive mass spectrometry-based secretome approach, researchers have identified hundreds of molecules that are cleaved from the cell surface of astrocytes, providing a unique database of MMP-2/-9 substrates specific to blood-brain barrier formation and maintenance. This discovery sheds light on the molecular processes essenti...
Researchers identified a new mechanism by which cancer hijacks enzyme substrate motif mutations, enabling tumor growth and therapy resistance. The study found that colorectal cancer hijacks BUD13 mutations to inactivate a key tumor suppressor, Fbw7.
Researchers identified USP7 as a novel cyclin F-interacting protein that stabilizes cyclin F protein. The study also found that USP7 regulates cyclin F mRNA, with pharmacological inhibition resulting in downregulation of cyclin F mRNA.
The Rutgers team developed an analytical toolkit to measure protein-carbohydrate interactions with single-molecule precision. By adjusting the 'stickiness' of enzymes, they aim to enhance cellulose decomposition for biofuels production and improve healthcare targeting protein-based drugs.
A recent study published in Cancer Research identified a unique vulnerability in certain high-risk cancers that can be exploited for targeted therapy. Researchers found that cancer cells with alternative lengthening of telomeres (ALT) have a common weakness, leading to resistance to DNA-damaging agents and chemotherapy.
Researchers developed a biosensor using nanostructured and nanoporous surfaces to detect biomarkers in clinical samples, overcoming technical challenges of small sample amounts. The new technology can provide quick and accurate diagnoses for diseases like prostate cancer without needing dilution or preprocessing steps.
A study by Rice University bioscientists has revealed the presence of a central metal ion critical to DNA replication and implicated in misincorporation. The research found that three metal ions are involved in the process, with the first supporting nucleotide binding and the second stabilizing the binding of loose nucleotides. This di...
A new study reveals that two equal charges in enzymes do not repel each other, but instead attract, facilitating chemical reactions. The researchers used protein crystallography to obtain a structural snapshot of the substrate before the reaction and found an attractive interaction between the enzyme and substrate.
Researchers at Berkeley Lab have successfully engineered microbes to produce novel chemicals and developed a new technique for studying enzyme reactions in real-time. This breakthrough could lead to the production of sustainable fuels, pharmaceuticals, and renewable plastics.
A study published in Nature Communications reveals the mechanisms of SARS-CoV-2 proteolysis and identifies key cellular substrates with therapeutic potential. The research provides a powerful resource for developing targeted strategies to inhibit the virus, which has caused over 227 million infections and 4.6 million deaths worldwide.
Researchers designed novel molecules that bound tightly to SARS-CoV-2's molecular scissors, inhibiting the virus's replication. The breakthrough could lead to new treatments for COVID-19.
Researchers demonstrate that nanoscale features of substrates influence cell behavior through adsorbed proteins, which restructure themselves and electrostatically interact with the material. The study sheds light on how biomaterials respond to interfacial layer characteristics.
Researchers have discovered a new two-component system (TCS) in bacteria that helps sense environmental stimuli and trigger cellular responses. The study reveals the molecular mechanism of G6P signal transduction by HptRSA sensor complex, providing important clues for nutritional sensing mechanisms in bacteria.
A team of scientists has discovered how the enzyme SPRTN recognizes and cleaves DNA-protein crosslinks, which are formed when proteins attach to DNA. This new mechanism is crucial for cell viability and the suppression of tumorigenesis, and has implications for cancer therapy.
Researchers at Ruhr-University Bochum identified why certain enzymes like hydrogenases are unstable in oxygen. By analyzing structural changes on an atomic level, they hope to protect these proteins against oxygen in future biotech applications.
Researchers at MIT have engineered signaling proteins that can interact with specific partners without interfering with cells' existing pathways. This allows for the creation of artificial circuits for applications such as disease diagnosis and cancer treatment.
Harvard researchers have captured the first-ever video of individual viruses assembling, offering a real-time view into their kinetics. The study reveals that viruses follow a specific pathway to form their capsid structure, with proteins arranging themselves into hexagons and pentagons around the RNA core.
A team of scientists at the University of Freiburg has discovered a transport protein in mycobacteria responsible for absorbing L-arabinofuranose, a crucial nutrient. This breakthrough could lead to the development of new antibiotics and treatments for diseases like tuberculosis.
Researchers used cryo-EM to visualize the dynamic process of substrate processing in the human proteasome at unprecedented resolution, revealing single magnesium ions bound to ATP and ADP. The study provides novel insights into the complete cycle of substrate processing and suggests distinct modes of ATP hydrolysis.
Researchers have designed a nanopore system capable of measuring different metabolites simultaneously in biological fluids, all in seconds. The system uses substrate-binding proteins as electrical transducers to detect single molecules, enabling real-time monitoring and diagnosis.
Researchers discovered tiny islands in yeast cell membranes where transport proteins are stored before use. The study reveals how these proteins move slowly through the membrane and provides new insights into protein localization and trafficking.
Researchers found that Skn-1a is a key regulator for generating Trpm5-expressing chemosensory cells in various parts of the body, including respiratory system and digestive tract. This discovery provides new insights into the role of these sensory cells in protecting against bacteria and potentially harmful substances.
Researchers have gained near-atomic resolution insights into the disaggregase protein's unfolding process, which helps break apart toxic protein aggregates. The study's findings suggest a ratchet-like mechanism and potential applications in developing new drugs or understanding biological processes.
Researchers at ETH Zurich developed a simple yet effective hybrid filter that can remove heavy metals, radioactive waste, bacteria, and other toxic substances from polluted water. The membrane is made of denatured whey proteins and activated charcoal and has been patented in 90 countries.
Researchers at Brown University have identified 98 proteins that are likely to bind to the cancer-linked enzyme PP2A, making them potential partners in crime worth investigating. The discovery could help scientists predict how strongly each protein binds PP2A and offer clues on how to prevent disease-causing misregulation.
The UCSB team created a bio-inspired coating mechanism using zwitterionic molecules from mussel proteins, reducing processing time and energy requirements. This new method enables continuous roll-to-roll dip coating of organic electronic devices without toxic chemicals.
A new proteomics method has been developed to measure the carbon uptake of specific marine bacterioplankton taxa, revealing metabolic patterns and taxonomic identification. The technique uses stable isotopic probing to analyze proteins from seawater samples, providing information on substrate incorporation and enzyme activity.
International researchers found protein machines collectively induce fluctuating hydrodynamic flows, enhancing particle diffusive motions. The proteins supply power to the system by extracting energy from nonequilibrium effects.
Researchers found that CpdR binds to the ClpXP protease, priming it for engagement with substrates, allowing for broad recognition of multiple pathways. This mechanism enables cells to control multiple pathways with a single regulator, facilitating rapid response to stress.
Researchers at MIPT have successfully grown fully functional cardiac tissues from cardiomyocytes using a genetically modified spider silk substrate. The study, published in PLOS ONE, demonstrates the potential for regenerative medicine to overcome transplant rejection by finding suitable substrates for cell growth.
The Biophysical Society has announced the winners of its Education Committee Travel Awards, which recognize students and postdoctoral fellows for their scientific merit. The award recipients will present their research during the meeting and receive a travel grant.
Scientists used a combination of biochemistry and mass spectrometry to reveal how protein degradation is critical to cell cycle progression and bacterial development. They identified over 100 new candidate substrates of the protease ClpXP, including proteins involved in DNA replication, transcription, and cytoskeletal changes.
Researchers investigate protein binding mechanisms, including the recently discovered fly-casting method, which accelerates binding by unfolding a protein chain. Temperature influences capture radius, with optimal conditions found at transition temperatures between folding and unfolding.
Researchers at Brown University have identified how protein phosphatase 1 (PP1) regulates substrate proteins by binding to specific sites, increasing specificity and reducing errors. This discovery sheds light on the enzyme's critical role in various diseases, including cancer and Parkinson's disease.
Researchers at UCLA have created a new intracellular delivery platform using nanocapsules with a single-protein core and polymer shell that can degrade or remain stable based on the cellular environment. This technology shows high efficiency and activity of multiple proteins delivered to cells with low toxicity.
Scientists at Burnham Institute identified novel cleavage sites for the caspase-3 enzyme, revealing that it targets α-helices as well as unstructured loops. This discovery challenges current dogma and offers new insights into protein signaling pathways.
The Rosalinde and Arthur Gilbert Foundation awards $75,000 grants to five early-career scientists studying the earliest brain changes suggesting Alzheimer's disease. The recipients aim to accelerate development of diagnostic, preventative interventions, and treatments.
The study reveals that Fbox proteins alternate between attaching to and being kicked off CRL1 by competing protein CAND1. This process is stabilized by the phosphorylated substrate N8, allowing for efficient degradation of aberrant proteins. The research highlights the importance of the proline residue in Fbox protein-CRL1 interaction.
Researchers at Scripps Research Institute have developed a new high-throughput screening technique that allows identification of potential cancer and other treatments. The technique, called fluopol-ABPP, uses fluorescence polarization to rapidly detect inhibitors for uncharacterized proteins.
A team of researchers at Northwestern University has successfully written nanoscale protein arrays using a tool called the nanofountain probe (NFP), which rapidly deploys proteins with unprecedented resolution. The technique utilizes electric fields to control protein transport, allowing for efficient and high-resolution patterning.
Researchers at UT Austin create fruit fly model to study Angelman syndrome genetics, revealing behavioral dysfunctions similar to human cases. The UBE3A protein's role in degradation is linked to disease symptoms, with mutant flies displaying circadian rhythm irregularities and memory impairments.
Scientists have determined the three-dimensional structure of human kynurenine aminotransferase II, an enzyme regulating glutamate activity. The discovery provides insight into biochemical regulation and may lead to treatments for neurodegenerative diseases like Parkinson's and Alzheimer's.
The Biophysical Society has announced the recipients of its international travel grants, who will attend the Joint Meeting in Long Beach. The award aims to foster interaction between American biophysicists and scientists in financially difficult countries.
The Biophysical Society has announced the winners of the 2008 Minority Travel Awards, which support participation at the Annual Meeting by minority students studying biophysics. The awards are given to ten recipients from universities across the US.
A study published in PLOS ONE found that all eukaryotic kinases share a common set of substrates, suggesting that despite their diversity, these enzymes have similar functions. This discovery may improve the testing of drugs targeting protein kinases for various diseases.
MGH researchers create novel enzymes through mRNA display technique, enabling evolution without prior knowledge of enzyme mechanism. The developed enzymes show promise for improving chemical synthesis and developing new therapies.
A team of researchers has developed a computational approach to accurately predict the function of proteins with unknown structures and functions. By comparing amino acid sequences to known proteins, they can identify potential substrates and understand the protein's biological role.