Articles tagged with Protein Folding
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Scientists have found evidence of protein folding at the site of intracellular droplets, which are formed when fluids separate into microscopic droplets. This phenomenon is linked to increased potential for protein aggregation and misfolding, a hallmark of neurological diseases like Alzheimer's and ALS.
A team of scientists has designed and successfully folded new protein structures into membrane-bound nanoparticles, expanding the toolkit for biomolecular engineering. These novel proteins show promise for advanced filtration and DNA sequencing techniques.
Researchers at UT Southwestern Medical Center identified a mechanism controlling the activity of chaperone proteins, which guide proteins into proper shapes. The findings shed light on hundreds of degenerative and neurodegenerative diseases caused by protein misfolding, such as Alzheimer's, Parkinson's, and Huntington's.
A team of researchers used machine learning to predict how proteins change shape and developed a new approach to study disordered proteins. They found that a key protein implicated in Alzheimer's disease becomes less toxic when it adopts a highly disordered shape.
Researchers from Far Eastern Federal University used numerical methods and quantum field theory to study the AFV3-109 protein's folding topology. They found that the protein forms an intermediate knot, swells before folding, and has a complex topology that requires collective behavior to form correctly.
A team of researchers determined the atomic structure of a coronavirus protein thought to aid in evading human immune cells. The structural map enabled investigations into how SARS-CoV-2 ravages the human body and laid groundwork for targeted antiviral treatments.
DNA origami is a technique that folds long DNA strands to create mini 3D structures for biosensors and drug delivery. A new guide from NIST provides a comprehensive resource for researchers to design efficient nanostructures using state-of-the-art tools.
Researchers discovered that backbone structure is key to lab-made protein thermostability, contradicting earlier assumptions about hydrophobic core packing. This breakthrough opens doors to designing even more stable proteins for various industries.
A new study found that proteins become biochemically addicted to complex interactions, even if they serve no purpose. The 'hydrophobic ratchet' mechanism drives the accumulation of useless complexity inside cells.
AlphaFold's breakthrough could accelerate biological research, unlocking new possibilities in disease understanding and drug discovery. The system determines highly-accurate structures in a matter of days, achieving a median score of 92.4 GDT across all targets.
Researchers at Penn State created functional membraneless 'protocells' from short polymers that can sequester RNA and maintain distinct internal microenvironments. The protocells were stable in various salt concentrations and performed certain functions of a protocell, suggesting they could be relevant models for early life on Earth.
Scientists have experimentally tested models of SARS-CoV2 RNA folding to reveal key regulatory elements. The research provides a foundation for understanding viral control and preparation for future 'SARS-CoV3' threats.
Researchers from Heidelberg University have identified the mechanism by which molecular chaperones dissolve amyloid fibrils formed in the brain, a key factor in Parkinson's disease. The study reveals that the chaperone complexes on the surface of the fibrils create strong enough pulling forces to disrupt the aggregates.
Researchers refine theories on protein interactions with solutions, discovering new factors influencing folding, including thermal expansion and temperature. Atom-scale models reveal complex interactions between solvents and peptides, potentially changing our understanding of hydrophobic and hydrophilic effects.
A novel class of compounds called rhizolutin has been discovered in a soil bacterium, Rhizolutin dissociates protein aggregates associated with Alzheimer's disease both in vivo and in vitro. The compound has been shown to reduce inflammatory processes and cell death caused by Aβ plaques in neuronal and glial cells.
Researchers found diverse organic compounds can easily form polymers under primitive conditions and even spontaneously create cell-like structures. This discovery sheds light on the origin of life, suggesting alternative polymers may have played a key role in early biological evolution.
The NIH has awarded a 4D Nucleome grant to Gladstone researchers Benoit Bruneau and Katie Pollard to investigate DNA folding in the developing heart. They aim to identify genetic causes of congenital heart disease, which affects one in 100 live births worldwide.
Researchers developed ProteinSolver, a graph neural network that can design fully new proteins to fit specific geometric shapes. By leveraging Sudoku constraints, the algorithm generates amino-acid sequences for functional protein structures.
Researchers developed ODiNPred, a machine learning tool using experimental NMR data for hundreds of proteins, to predict regions of rigidity and flexibility. This helps understand the biological role and regulation of intrinsically disordered proteins.
A study by UC Santa Barbara researchers found that a disordered protein exhibits slow relaxations, defying expectations, and 'remembers' its previous stretching. This behavior is similar to glassy materials like memory foam and crumpled paper.
A team of scientists created a computational model of proteins responsible for transforming mercury to toxic methylmercury, shedding light on how this reaction occurs and its environmental impact. The models suggest that conserved cysteine amino acids in HgcB are involved in shuttling mercury to HgcA during the reaction.
Researchers designed millions of protein therapeutics targeting SARS-CoV-2, with over 2,000 showing binding signals. The approach has shown promise in identifying highly promising leads for the spike protein binder.
Scientists have mapped proinsulin's vast network of interacting proteins, revealing a key player in proper folding and insulin production. Boosting PRDX4 levels may offer a novel therapeutic approach to improving type 2 diabetes treatment.
Researchers at UMass Amherst have identified an unexpected role for prion nucleation seeds that enhances their ability to appear and resist curing. The minimum size of the seed complex determines whether the disease can persist, and controlling this transformation could lead to a cure.
University of Groningen researchers used nanopore technology to observe a single enzyme in four different folded states, which play an active role in the reaction mechanism. The study's findings have significant implications for enzyme engineering and the development of inhibitors.
A genetic defect in 15% of children with medulloblastoma leads to disrupted protein production and metabolism, increasing the risk of cancer. The study identifies a new hereditary cause of medulloblastoma, which could lead to more effective treatment options for affected families.
Researchers have identified a hereditary genetic defect that disrupts protein production in children with medulloblastoma, a common malignant brain tumor. The study found that 40% of children and young people with this subtype of medulloblastoma have a congenital genetic predisposition for the disease.
A recent study by Rafael C. Bernardi at the University of Illinois uses computational tools to explain the mechanism behind streptavidin and biotin binding, which varies depending on the lab's conditions. The analysis shows that the tethering geometry significantly influences the unbinding mechanics.
Researchers use machine learning to translate protein structures into musical scores, generating new proteins with unique properties. The method has the potential to design entirely new biomaterials and improve existing enzymes.
Scientists at Rutgers University have discovered the protein structures responsible for early life on Earth, including ferredoxin and Rossmann folds. These ancient proteins were crucial for metabolism and chemical signals, paving the way for life to emerge.
The Protein Society announced its 2020 award recipients, recognizing leaders and innovators in protein science. Professor Karen Fleming received the Carl Brändén Award for her pioneering work on membrane protein folding, while Professor Stephen Sligar was honored with the Christian B. Anfinsen Award for his development of nanodiscs.
Researchers have discovered a new role for amyloids in memory storage. They found that Orb2 protein self-aggregates form biochemically active aggregates at synapses, promoting synaptic translation and memory persistence. This finding challenges the traditional view of amyloids as neurotoxic structures.
Researchers at Delft University of Technology have discovered a new loop structure in DNA, called the 'Z loop', which differs from traditional single loops and occurs more frequently. This discovery sheds light on how condensin proteins fold DNA into a zigzag structure through complex interactions.
Scientists have found that 'silent' genetic variations in DNA sequences can significantly impact protein folding, impairing cell function. The study, conducted by the University of Notre Dame, used a bacterium to test this hypothesis, finding that synonymous mutations can alter protein synthesis rates.
Researchers identified a key strategy of cells to deal with misfolded proteins, where cells form aggregates to protect them from degradation. This approach is favored over fixing folding or destroying proteins, allowing for recovery under optimal conditions.
Researchers are now designing new proteins from scratch with specific functions using computational methods, enabling the creation of novel structures and properties. This breakthrough has significant implications for fields such as vaccine design, targeted drug delivery, and 'smart' therapeutics.
Researchers at Aarhus University used a combination of spectroscopy methods and X-ray scattering to study the interactions between soap molecules and proteins. They found that one class of soap molecules induces unfolding of proteins, while another class helps them fold back into their correct shape. The study provides deeper insight i...
Researchers at LMU have determined the structure of a specialized transport system for inserting folded globular proteins into membranes. The system exploits the airlock principle, allowing mitochondria to transfer essential protein Rip1 in its folded state across their inner membrane.
Researchers create two-modal fluorogenic probe to monitor protein aggregation, enabling detailed assessment of polarity and unfolded protein load. The NTPAN-MI probe offers a sharper picture of cellular stress responses, allowing for more accurate knowledge of crosstalk between components.
Researchers aim to understand how biomolecules fold and interact to inform better drug design. The lab combines computer programming with biochemistry to model protein folding, nucleic acid dynamics, and lipid interactions.
Scientists have developed a method to identify all 20 amino acids in proteins using nanopores, a major breakthrough towards protein sequencing. The technology allows for precise differentiation of modified forms of amino acids, potentially identifying hundreds of modifications.
A new study reveals that molecular chaperones play a crucial role in preventing the misfolding of alpha-synuclein protein, which is associated with diseases like Parkinson's. By inhibiting these chaperones, researchers found that alpha-synuclein aggregates can form at the amino acid level.
A new study proposes using standard compression algorithms like zip software to calculate entropy, providing insights into protein folding and other complex systems. This method has endless applications in fields such as biomedical simulations and basic research.
Researchers found structural diversity in alpha-synuclein protein deposits associated with Parkinson's and MSA, revealing potential starting points for medicines. The study suggests that the variability of Parkinson's disease could be related to differences in the folding of aggregated alpha-synuclein.
Chaperone proteins protect α-Synuclein from cell damage in healthy cells. Impaired chaperone binding leads to α-Synuclein accumulation and mitochondrial destruction, characteristic of Parkinson's disease. The study provides new insights into the role of molecular bodyguards in neurodegenerative disorders.
Researchers clarify how RNA molecules fold during assembly of ribosomes, a complex process previously believed to be tightly controlled. The discovery opens up possibilities for designing targeted antibiotics with fewer side effects and better understanding of cancer growth.
A crowdsourcing game called Foldit allows players to design protein structures that are reproduced in labs, showing their accuracy. Researchers also discovered how cooking affects the gut microbiome and found a new material to remove toxic sulfur dioxide gas.
Biomedical engineers at Duke University have developed a new method to create stable IDP-based materials by controlling environmental triggers. This allows researchers to harness the phase transition properties of IDPs to build novel materials for drug delivery, tissue engineering, and regenerative medicine.
Researchers used NMR spectroscopy and hydrostatic pressure to study the impact of internal cavities on protein stability. They found that filling these cavities with water destabilizes the protein, which has significant implications for industrial enzymes and biological drugs.
Researchers add archaeal DNA to mouse models' genes to assess resistance to retinal degeneration and potentially develop new methods to prevent incurable eye diseases. The goal is to understand how molecular chaperones can help avoid misfolded proteins that cause blindness.
Researchers found that exposure to BMAA, a toxin produced by algae, can alter the structure of protein SOD1, leading to neurodegenerative disease ALS. The study suggests that studying patterns of SOD1 modifications may aid in developing lifestyle and preventative interventions for sporadic ALS.
LMU biologists have identified a general alarm signal that activates the Unfolded Protein Response (UPR) in mitochondria, ensuring protein degradation and restoring normal cell function. The signaling pathway is triggered by a decline in mitochondrial membrane potential and involves transcription factor ATFS-1.
University of Alberta researchers found a critical protein called PEX3 in the cells of a deadly infectious parasite, opening the door to less harmful treatment options for millions suffering from diseases. The discovery could lead to effective drug treatments that target and kill parasites without harming human hosts.
Researchers reveal precise three-dimensional structure of amyloid fibrils from PI3K SH3 domains, shedding light on protein folding and misfolding processes. The findings have significant implications for understanding the causes of neurodegenerative diseases.
Los Alamos National Laboratory scientists have developed a new quantum computing algorithm to investigate the quantum-to-classical transition in systems like biological proteins. The algorithm allows for the search for classicality in quantum systems, providing insights into how quantum mechanics applies to large-scale objects.
A computational model has been developed to understand the mechanism of prion replication, which replicates in absence of genetic material. The study proposes a novel architecture consistent with recent experimental data and allows for the reliable prediction of protein conformational transitions.
Researchers found that ATL-mediated membrane tethering plays a critical role in maintaining cargo mobility and COPII formation in the ER. In ATL-deleted cells, cargo packaging into COPII vesicles was significantly reduced, highlighting the importance of ATL in regulating membrane trafficking.
Frequency combs are widely-used tools for measuring and detecting different frequencies of light. Researchers from Harvard SEAS have found that some lasers use a variational principle to maintain constant intensity in the face of changing frequencies.
A team of researchers collaborated with Foldit players to design synthetic proteins, with 56 of the designed proteins found to be stable. The designs were able to adopt their intended structures, suggesting that the gamers had produced realistic proteins.
Researchers studied over 8,000 genes and proteins in acute lymphoblastic leukaemia (ALL) patients, finding abnormal DNA folding and gene activity. This discovery could improve understanding of hyperdiploid childhood leukaemia and develop more effective treatments.