Articles tagged with Protein Folding
Researchers have developed a microscope instrument that can accurately measure the 3D movement of individual molecules over many hours, far beyond current limits. This technology has potential applications in biology, biochemistry, and biophysics, including tracking protein motions and characterizing nanoscale objects.
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 used nuclear magnetic resonance spectroscopy and small-angle X-ray scattering to study the effects of high pressure and urea on protein unfolding. They found that while both methods cause proteins to unfold, they do so through different mechanisms, leading to distinct intermediate proteins.
Researchers at Rice University have developed a new theory on chromosome folding, which is crucial for understanding gene regulation and other biological processes. The theory predicts the folding mechanisms and resulting structures of chromosomes using statistical tools and energy landscapes.
Researchers developed a new computational method called AGGRESCAN3D to study protein aggregation in 3D. The algorithm surpasses limitations of previous methods and offers improved precision in predicting protein aggregation properties.
Researchers have identified a critical molecular pathway in blood stem cells that can be manipulated to enhance their regenerative capacity and reduce the signs of aging. By slowing down mitochondrial activity, they found that levels of SIRT7 can help cope with stress caused by misfolded proteins.
Researchers discovered that epigenetic modifications to mRNA act as a structural switch allowing RNA-binding proteins to recognize inaccessible regions. This phenomenon, known as the m6A switch, affects practically all RNA-protein interactions, with widespread implications for gene expression and regulation.
The study reveals how polar substances nearby can change the interaction between nonpolar hydrophobic groups, allowing for controlled adhesion or repulsion in water. This discovery may lead to new designs of molecules with useful functions in water-based applications.
The Protein Society recognizes Chih-Chia Su and Minttu Virkki as the 2015 Best Paper Award winners for their research on Campylobacter jejuni CmeC outer membrane channel and aquaporin 1 folding, respectively. The award honors exemplary work of first authors and supports the next generation of protein scientists.
University of Illinois researchers have developed a specialized microscope to study the movement of unfolded proteins in cells. They found that these proteins slow down and interact with chaperones, which can lead to cell dysfunction and disease. The discovery provides insight into protein-misfolding diseases.
Researchers found that heat shock factor-1 (HSF-1) stabilizes the cell's cytoskeleton, preventing misfolded proteins from accumulating in the brain. This discovery expands opportunities for therapies to prevent neurodegenerative diseases such as Alzheimer's and Parkinson's.
Researchers at UO and LBNL create self-assembling, synthetic proteins called peptoid nanosheets that mimic complex biological mechanisms. The new technique enables the production of versatile peptoid nanosheets for various applications.
Researchers create RNA origami structures by encoding folding recipes into single-strand RNAs, allowing for self-folding and organization of molecules on the nanoscale. The method has potential applications in cellular engineering, biochemical factories, and molecular scaffolds.
Scientists at the Max Planck Institute for Developmental Biology discovered that proteins can be constructed of similar amino acid chains even when their three-dimensional shapes differ significantly. This suggests that modern proteins arose from common precursors, built up from smaller fragments according to a modular principle.
Researchers have developed a method to predict membrane protein folding using energy landscape theory, increasing the technique's value to disease and drug research. The study successfully determined that thermodynamic funnels hold the upper hand in folding proteins inside a membrane, similar to globular proteins.
Scientists develop a new statistical mechanics model to explain protein folding and unfolding in an aqueous environment. The study confirms the validity of their calculations using experimental measurements for two proteins, providing insights into high-energy ions therapy on biological cells.
A Penn study reveals how cells remove misfolded proteins, a crucial process for understanding brain diseases caused by toxic protein clumps. The research identified a two-stage recycling system involving proteins PML and RNF4 that tags misfolded proteins for degradation.
Researchers found that crowding leads to a dramatic increase in RNA folding rate, while unfolding rate remains relatively stable. This could have profound effects on biochemical pathways and cellular behavior.
The study reveals that chaperones, like GroEL and GroES, use a high-speed origami-like mechanism to accelerate protein folding. This process, which was previously thought to be energetically unfavorable, is now understood to be a favorable reaction, allowing proteins to fold faster than they are produced.
JILA researchers developed a new AFM probe design that improves precision and stability in picoscale force measurements. The shorter, softer probes enable rapid, precise measurements of biomolecules like proteins and DNA, allowing for the study of folding and stretching events.
Researchers have discovered that increased temperature and crowded environments cause unfolded proteins to shrink and lose their complex functions. This discovery has significant implications for understanding various biological processes, including cancer onset.
Biophysicists at Rice University developed a computational technique that combines genetic and structural data to analyze complex molecular machines. The technique, called DCA, reveals previously unknown details about protein transitions between functional states.
Scientists at Scripps Research Institute develop new probes to detect functional, normally folded, and disease-associated misfolded conformations of proteins in cells. The technology paves the way for discovering new drugs for misfolding diseases such as Alzheimer's and Parkinson's.
Researchers at TUM have found that the heat shock protein Hsp90 binds to prefolded tau proteins, which are characteristic of Alzheimer's disease. This discovery provides important insights into the mechanisms underlying the disease and may lead to new therapies.
Scientists discovered that polyphosphate, an ancient chemical present in all living creatures, plays a crucial role in protein folding and can substitute for complex chaperone proteins. This breakthrough could lead to new strategies for treating protein folding diseases like Alzheimer's and Parkinson's.
Researchers found that increasing titin's stiffness can be a trigger for pathological changes in skeletal muscles. The team used a mouse model lacking nine titin Ig domains to investigate the effects of increased stiffness, revealing that this can lead to muscle atrophy and contractility changes.
Rice University researchers have developed a new method to identify previously hidden details about proteins' structures, potentially accelerating novel drug design. By combining structural data and genomic analysis, the team predicted intermediate configurations of proteins that were hard to detect.
The 2013 AAAS Kavli Science Journalism Awards recognized outstanding science journalism, including a series on preventing Asian carp from invading the Great Lakes and an early warning system for earthquakes. Winners included Dan Egan, Hillary Rosner, Joshua Seftel, Barbara Lich, and Azeen Ghorayshi.
Berkeley Lab researchers design a programmable nanomaterial inspired by natural antibodies, capable of identifying diverse molecules. The new material resembles 'molecular Velcro' and has promising applications in chemical sensing and catalysis.
LIMP-2 possesses a novel protein fold and nanoscale transport tunnel, enabling it to transport enzymes and lipids. This discovery could lead to the development of therapies for diseases like Gaucher's, where enzyme deficiency causes lipid accumulation.
Chemist Elad Harel at Northwestern University has been awarded a Packard Fellowship to develop optical analogs of MRI technology for studying protein misfolding. Misfolding is linked to diseases such as Alzheimer's, Parkinson's and diabetes.
Scientists at EMBL have discovered that pairs of tags are added to RNA molecules in a specific order, helping control folding and ribosome formation. This complex choreography allows cells to precisely regulate protein factories.
The study reveals that membrane proteins use a dynamic, constantly changing state to transport proteins across the outer membrane without requiring energy. This finding provides an exceptional insight into the transport mechanism and has implications for understanding protein folding and transport in bacteria.
Scientists discovered that rare codons near the start of a gene control protein production, allowing for more efficient bacterial reprogramming. This finding could lead to new methods for synthetic biologists to produce drugs and biological devices.
A new method has produced beautiful 3D models that more accurately show the complex shape and folding of chromosomes. These images reveal a truer picture of their structure, which is rarely like the X-shape, and have direct consequences for health, ageing and disease.
Researchers at Rensselaer Polytechnic Institute have created a computational model that accurately simulates the complex twists of RNA as it folds into a critical hairpin structure. The new model can simulate the folding of three known versions of a tetraloop, accurate to within one ten-billionth of a meter.
Researchers at UC Davis show that individual protein molecules can restart at any speed achieved by the whole population of enzymes, demonstrating the ergodic theorem. This finding has implications for understanding protein folding, drug interactions, and enzyme engineering.
Researchers mapped the genome's 3D structure, finding that selected exons are exposed and accessible to transcription machinery. This reveals a new mechanism by which the genome's folding regulates gene expression and splicing.
Researchers at Scripps Research Institute found a way for intrinsically disordered proteins to modulate their functionality. They used single-molecule FRET technique to study the dynamics of an adenovirus protein and discovered that it can employ allostery to regulate its interactions with other proteins.
A new study suggests that the number of unique protein binding pockets is surprisingly small, making it impossible to avoid drug side effects. The research found that fundamental biochemical processes needed for life could have been enabled by simple physics of protein folding.
Researchers at SISSA have devised a trick to speed up the analysis of protein dynamics using computer simulations. By exploiting experimental data and mathematical rules, they reduce simulation times by an order of magnitude, allowing for faster research in this field.
A three-year study by Professor Michael Blaber and his team suggests that proteins, not RNA, were the first molecules to form life. The researchers found that 10 prebiotic amino acids could be folded into complex protein structures in a high-salt environment, supporting a 'protein-first' view of abiogenesis.
Researchers have successfully studied the shape of proteins using a novel strategy combining computational modeling and experimental techniques. This breakthrough has implications for understanding protein functions and diseases such as cancer, Parkinson's, and Alzheimer's.
Researchers mapped protein structures and organisms onto a timeline, revealing an 'hourglass' pattern where proteins folded faster over time. This discovery sheds light on the evolutionary drivers behind protein folding and has implications for understanding molecular functions, genetic engineering, and synthetic biology.
Scientists have successfully observed protein unfolding at atomic resolution, revealing the intermediate forms that occur during folding. The study may contribute to a better understanding of how proteins misfold in diseases like Alzheimer's, Parkinson's, and Huntington's Chorea.
A study by HITS researchers found that most proteins evolved to fold faster, with a 'big bang' of complex structures emerging 1.5 billion years ago. The study suggests that faster folding speeds may make proteins less susceptible to aggregation.
Researchers discovered a novel charge zipper principle used by membrane proteins to form functional units, allowing them to be immersed into hydrophobic cell membranes. The mechanism involves the assembly of amino acids with positive or negative charges, forming an uncharged ring that lines the TatA pore.
Intrinsically disordered proteins (IDPs) may still have functions without a rigid structure, while protein flexibility is crucial in molecular recognition. The debate highlights the complexity of protein behavior and the need for experiments to determine the true nature of protein recognition.
Scientists have made significant breakthroughs in DNA nanotechnology by removing obstacles to design processes. They demonstrated the first validation of subnanometer-scale positional control and discovered a method for rapid folding and high-yield production of complex DNA-based objects, similar to protein folding.
Researchers at the University of Massachusetts Amherst have deciphered key steps in the mechanism of Hsp70 molecular machines, which facilitate protein folding. The study provides insights into how chaperones work and their role in rapidly dividing cells, including cancer cells, highlighting potential therapeutic targets.
Researchers have identified a key pathway called the Unfolded Protein Response (UPR) that helps tumor cells escape programmed cell death during lymphoma development. Inhibiting this pathway could lead to new blood cancer treatments.
Research reveals that approximately 30-40% of eukaryotic proteomes consist of intrinsically disordered proteins, playing crucial roles in signaling and regulation. These proteins' unique characteristics enable them to interact with multiple molecules, facilitating efficient information exchange through networks.
A new study adds giant viruses to the universal family tree, revealing they are ancient living organisms. The research found that many of the most ancient protein folds were also present in giant viruses, suggesting they appeared early in evolution.
Researchers have discovered how a key protein assembles telomerase, an enzyme crucial for preventing DNA degradation and cancer cell proliferation. The study sheds new light on the telomerase enzyme's structure and function, which may help predict its behavior in humans and other organisms.
Researchers create DCA-fold tool to spot subtle interactions between amino acids in proteins, refining methods for predicting protein form and function. The new method uses genomic sequence information to eliminate possibilities from the range of forms a protein might take.
A new study finds strongly conserved parts of proteins responsible for knotted portions display remarkable similarities among species separated by more than a billion years. Slipknotted proteins, rare but essential for cell membrane stability, are also widely distributed across different families and species.
A new study reveals that protein knots, a complex structure, are strongly conserved in nature, suggesting they have specific functional advantages. The researchers found that knotting patterns are highly conserved, with flexible points of entry, which may contribute to the stability and function of proteins.
Researchers found that internal friction significantly slows down the protein folding process, making it easier for proteins to get stuck in unfolded states. This understanding could lead to new insights into diseases like Alzheimer's, where misfolded proteins contribute to amyloid plaques.
A new study by Michigan State University researchers found that curcumin can prevent clumping of alpha-synuclein proteins, a common cause of Parkinson's disease. By binding to these proteins, curcumin rescues them from aggregation, potentially slowing the progression of the disease.
A new solid state NMR method helps visualize protein shapes, aiding understanding of biological molecules' functions and behaviors.