Researchers at NIST determined the three-dimensional shape of class IV adenylyl cyclase, an enzyme found in plague bacteria Yersinia pestis. The unusual configuration may play a role in disrupting cell processes in infected hosts, highlighting the importance of molecular data for developing defenses against plague and other pathogens.
ARP/wARP software has been upgraded to handle lower-resolution data, enabling researchers to study complex problems in cancer, cardiovascular, and neurodegenerative diseases. The new grant will allow scientists to focus on structure analysis rather than building models, potentially leading to revolutionary therapeutic strategies.
Researchers at Cornell University have discovered how bacteria sense their environments through a cooperative lattice of receptors on the surface of bacterial cells. This sensitivity allows bacteria to detect even slight changes in nutrient concentration, enabling them to respond to stimuli such as pollutants or explosives.
Hong Li's research on biomolecules has yielded new insights into RNA recognition and cleavage by a splicing endonuclease. The study provides critical information on the functioning of biomolecules, which could lead to new treatments for various health problems.
A collaborative study successfully applied neutrons to locate hydrogen atoms in proteins, revealing how water molecules interact with proteins and influencing their function. The research demonstrates potential for understanding hydrogen-atom transfer processes in large biological systems.
The NIH grant aims to reduce TB treatment time from 6-9 months to just a few weeks by identifying specific drug targets and developing new medicines. Researchers will use protein crystallography and grid virtual screening to accelerate the drug development process.
A recent study by MIT chemist Catherine L. Drennan has discovered the simple secret behind how organisms create self-medications like antibiotics and anti-tumor agents. The enzyme SyrB2, which uses a smaller amino acid to bind halides, reveals an elegant simplicity in its mechanism.
Scientists from the Max Planck Institute determined how toxins interact with bacterial potassium channels at an atomic level. They found that toxins attach to a particular area of the channel, changing its structure, and recognize specific amino acid sequences in the ion channel.
Researchers at Emory University have identified a unique binding method between ubiquitin and Isopeptidase T (IsoT), a key enzyme in degrading ubiquitin chains. This breakthrough could lead to the development of targeted therapies for diseases associated with aberrant protein degradation.
Researchers at Scripps Research Institute have created a detailed snapshot of a cocaine antibody's dynamics, revealing its potential as a therapeutic agent for treating addiction. The study's findings provide insight into the molecular basis of catalysis and suggest possible mutations to enhance the antibody's efficacy.
Researchers at Duke University Medical Center discovered a subtle 'backrub' motion in proteins, which could have important implications for understanding protein evolution and design. The study found that this motion is common in proteins frozen in crystals and may be even more prevalent in liquid environments.
A team of scientists has shed light on the molecular mechanism of Dicer, an enzyme involved in RNA interference, a process that governs key developmental events. The study reveals that Dicer not only cleaves RNA but also measures and snips it into precise increments.
Scientists at Gladstone Institutes have successfully imaged the native state of apoE4, a key protein in Alzheimer's and cardiovascular diseases. This breakthrough has significant implications for developing future therapeutic interventions by providing a complete understanding of the protein's configuration.
Researchers at Imperial College London have made a significant breakthrough in protein crystal formation using a novel porous material called BioGlass. The team successfully induced the crystallization of the largest number of proteins ever achieved using a single nucleant, offering new hope for drug discovery.
Researchers have discovered a unique architecture of the Duffy-Binding Like (DBL) domain that allows the malaria parasite to bind to red blood cells. This finding may lead to the development of specific drugs that can target the parasite without affecting healthy blood cells.
A new algorithm, 'particle picking by segmentation,' enables fast and reliable selection of images for 'crystallization in silico' from millions of candidates. By focusing on background noise, the approach improves yields over existing methods.
Scientists create a new class of materials called covalent organic frameworks (COFs), which can store hydrogen more efficiently. By slowing down the synthesis process, researchers can predict the internal structure and properties of COFs, allowing for tailored applications.
Researchers from UT Southwestern and international partners discovered metal-containing compounds that inhibit HIV protease with low concentrations and stability. These compounds may be effective against resistant strains of the virus.
The research discovered the structure of JAK2 kinase, a well-validated drug target for cancer and other disorders. The discovery will enable the development of specific molecules to treat diseases where JAK kinases play a pivotal role, leading to a rapid growth of phase I therapeutics.
Researchers at UC Davis have successfully synthesized a chromium-based compound with a five-fold bond, a feat previously thought impossible. This breakthrough challenges the current understanding of metal chemistry and opens up new avenues for research in carbon chemistry.
Scientists generate 3D image of coproporphyrinogen oxidase (CPO) at atomic level, shedding light on mutations causing hereditary coproporphyria. The study provides insights into the heme biosynthesis pathway and its role in rare diseases.
The crystal structure of IRAK-4 reveals a distinct highly structured loop that differs from its Pelle counterpart, indicating a need for revised molecular recognition and potential new targets for treating arthritis and inflammation.
Researchers have purified the enzyme and identified its structure using X-ray crystallography, paving the way for developing drugs that target quorum-sensing pathways. The enzyme disrupts bacterial population sensing, preventing genes from triggering increased virulence.
Researchers at the Beckman Institute found that aquaporin channels are narrower for water than glycerol, allowing only water to pass. This discovery could lead to new drug targets for treating diseases related to impaired aquaporin function.
Researchers have discovered the molecular mechanism of malaria parasite invasion into red blood cells, revealing a key protein-protein interaction known as the RII handshake. This finding suggests that blocking this interaction could be an effective strategy for preventing and treating malaria.
Researchers at Purdue University have determined the combined structure of Coxsackievirus A21 and ICAM-1, a receptor molecule that enables the virus to infect host cells. The study reveals how the virus recognizes and anchors to the cell, providing insights into the initial stages of infection.
Vinculin and alpha-actinin work together to reinforce the cell skeleton, allowing it to withstand stress during movement and enabling purposeful motion. This discovery could help understand embryonic development and cancer metastasis.
A Brown University and Harvard Medical School team has revealed the crystal structure of λ-integrase, a protein responsible for site-specific recombination in lambda virus. The findings provide a major leap in understanding mobile DNA, with implications for studying viral infections and gene editing.
Researchers at UIC are developing protease inhibitors to block the SARS virus's advance, aiming to reduce viral load and ameliorate disease. The targeted approach, focusing on the backbone of enzymes, is designed to evade mutations that may hinder drug effectiveness.
The study reveals the first complete look at the structure of SUMO-1 and its conjugation to other molecules within the complex. Understanding this process could lead to novel anticancer therapies by targeting sumoylation, which promotes cell division.
Researchers at Yale University have identified a molecular mechanism for RNA quality control, which involves the protein Ro recognizing and binding to misfolded RNAs. This discovery sheds light on how cells handle abnormal RNAs that are not translated into proteins.
Researchers at Purdue University found that viruses T4 and HK97 share similar protein folds in their outer shells, suggesting a common ancestor. The findings, published in the Proceedings of the National Academy of Sciences, provide further evidence for the evolutionary conservation of viral capsid structures.
MacMicking studies immune-related GTPases in response to Mycobacterium tuberculosis (Mtb) infection to understand biological relationship between eukaryotes and prokaryotes. The award will support his research program on novel host defense pathways to infection.
The discovery of CD147 reveals a new component regulating the production of A-beta peptides, which form amyloid plaques. The study highlights the importance of understanding membrane protein structures to combat Alzheimer's research.
Researchers have discovered the structure of a membrane transporter protein used by bacteria and human cancer cells to evade drugs. This finding could lead to improved cancer therapy and more effective treatments for antibiotic-resistant infections. The protein, MsbA, plays a crucial role in bacterial cell growth and is now being studi...
Researchers at Oregon State University have used X-ray crystallography to determine the three-dimensional structures of nearly all possible sequences of a macromolecule, creating a map of DNA structure. This breakthrough should fundamentally improve our understanding of genetic function and biological processes.
Scientists have made significant progress in understanding how bacteria develop resistance to antibiotics, including macrolides and lincosamides. The study revealed new details about the structural basis of drug resistance and identified potential targets for developing new hybrid antibiotics.
Dental researchers successfully grown natural tooth enamel using a protein scaffold, solving a long-standing puzzle. The discovery unlocks one mystery of enamel formation and may have long-term applications in dental science and medical-device development.
A study led by Drs. Dennis R. Burton and Ian A. Wilson identified the specific amino acids on gp41 that 4E10 interacts with, revealing its unique ability to target a conserved region near the surface of the virus. This research advances the quest for an HIV-1 vaccine, providing valuable insights into broadly neutralizing antibodies.
Researchers at VIB have discovered a way to prevent E. coli bacteria from adhering to the wall of the urinary tract, potentially leading to a new treatment for chronic urinary tract infections. By targeting the protein Adhesine FimH on the bacteria's pili, a new medication could be developed to combat this widespread problem.
Dr. Walsh will focus on his research on nonribosomal peptide synthetases, which biosynthesize a variety of biologically active peptides. He will discuss the molecular logic of enzymatic assembly lines and tailoring enzymes that modify the peptides.
Researchers at UC Santa Cruz have identified a highly conserved RNA structure, known as s2m RNA, in the SARS virus. This unique feature appears to be capable of binding to proteins involved in regulating protein synthesis in cells, leading scientists to hypothesize that it may hijack the host cell's machinery for viral use.
Researchers at Argonne National Lab have developed a new technique using WAXS to study ligand-induced structural changes in proteins, comparable to X-ray crystallography results but faster and cheaper. This method has the potential to identify lead drugs and analyze protein-ligand interactions more efficiently.
Scientists have determined how a specific protein blocks DNA replication, providing a key to designing targeted cancer therapies. By understanding the structure of this protein, researchers may also develop new forms of antibiotics.
A study published in Nature Structural and Molecular Biology reveals that cellular modifications to tRNA enhance its ability to decode genetic information at the atomic level. The research supports Agris' Modified Wobble Hypothesis, suggesting that modified nucleosides enable tRNA to decode more than one DNA code.
The University of Manchester has developed a new technique that allows scientists to study protein molecules in complete detail, doubling the number of visible atoms compared to current methods. This breakthrough enables the creation of more effective medicines by targeting specific proteins.
Researchers at Wyeth determined the three-dimensional structure of PKCΘ, a key signaling molecule in T lymphocytes. This discovery has potential to identify selective inhibitors for autoimmune diseases by disabling T cell activation.
Dr. Paul Ribbe will be honored with a symposium for his significant advances in the crystallography of feldspars, which led to the creation of definitive work on mineralogy. The symposium features keynote addresses from internationally recognized scientists and explores the 'micro to macro' approach pioneered by Ribbe.
Researchers at OHSU have determined the structural basis underlying a crucial mechanism that allows gram-positive bacteria to adapt to available energy sources. This finding could lead to the development of new antibiotics that disrupt this mechanism, making bacteria more susceptible to counter-attacks by the human body.
Researchers found a novel rhodopsin protein in bacteria that can distinguish between blue and orange light, enabling more efficient harvesting of light for photosynthesis. This discovery sheds light on the role of cell membranes in biological functions and has potential applications in nano-machinery as a color-sensor.
Researchers at St. Jude Children's Research Hospital have uncovered the structure of an enzyme that produces folate, a nutrient essential for bacterial survival. The team created images of the molecular structure using X-ray crystallography and discovered a new target for drugs that could avoid antibiotic resistance in anthrax bacteria.
A team of scientists at PNNL has observed real-time interactions between single proteins, supporting the 'fly-fishing mechanism' theory. The technique used, single-molecule photon stamping spectroscopy, allows for dynamic measurements of protein dynamics.
Researchers at Boston Children's Hospital have made a breakthrough in understanding how rotavirus enters cells, paving the way for a new and safer vaccine. The study used crystallography and electron microscopy to determine the geometric structure of the virus's surface protein VP4, revealing its entry mechanism.
The 3D-EM Network of Excellence aims to image macromolecules and molecular machines at atomic resolution, fostering innovation in European EM research. The network will provide training, a structural database, and user-friendly software to enhance structural analysis.
Researchers have made progress in understanding the mechanisms of HIV drug resistance, particularly with tenofovir and the DAPY compounds. These drugs approach the problem of resistance in different ways, targeting reverse transcriptase enzyme or molecular machine used by the AIDS virus.
Scientists at Yale University used X-ray crystallography to image the self-splicing group-I intron and its associations with metal ions. This discovery reveals an evolutionarily ancient mechanism for RNA splicing, previously thought only possible in proteins.
Ferré-D'Amaré's groundbreaking research on RNA crystallization and ribozymes has significantly advanced the understanding of molecular structures in living organisms. He developed new techniques to obtain RNA crystals, enabling detailed studies of RNA-protein interactions and biochemical functions.
Researchers have developed a new technique called X-ray standing wave imaging, which enables direct visualization of ion site distributions at mineral-water interfaces. This breakthrough streamlines the tedious process of structure determination, allowing scientists to complete data acquisition and analysis in under 24 hours.
Researchers at U.Va. Health System devise method to extract membrane proteins by using chemicals that allow them to be reversibly folded and refolded. This allows for structural and functional studies of the proteins using crystallography or nuclear magnetic resonance imaging.
Researchers at Virginia Tech have developed a new paclitaxel analog that is more effective than the natural compound in killing cancer cells. The analog has been shown to be up to 20 times more active in one assay and three times more deadly to cancer cells than current treatments.