Geometry-based kinetic simulations reveal conditions for improving DNA-nano/microparticle motor speed, run length, and unidirectionality. Large particles can increase run length and unidirectionality due to increased DNA/RNA duplex formation, while small particles retain room for further acceleration.
Researchers use extreme ultraviolet spectroscopy to measure nuclear radii of lutetium and ytterbium, resolving a long-standing anomaly and challenging current nuclear structure theories. The findings suggest significant even-odd effects in rare-earth elements, highlighting new challenges in nuclear structure research.
The study describes a spectrum of dynamic architectures among glycan-building enzymes, from the rigid POMGNT2 dimer to the flexible, reversible assemblies of LARGE1 and K4CP. These contrasting architectures suggest a connection between molecular organization and catalytic demands.
Researchers discovered intricate magnetic structures above quiet-Sun regions using the balloon-borne solar observatory Sunrise-III. The study reveals thin, elongated, thread-like magnetic structures embedded within the magnetic canopy above a quiet-Sun region.
Researchers successfully created circularly polarized emitters from racemic gold-silver clusters by separating them into mirror-image forms using chiral oxygen-donor ligands. The phosphate-protected enantiomer pair exhibited high photoluminescence quantum yields and luminescence dissymmetry factors.
A molecular bridge connects two small GTPase pathways in plants, enabling communication between RAB5 and ROP7 pathways. This connection plays a crucial role in pollen development, and disrupting it affects plant reproduction. The study reveals a new insight into how small GTPase systems are integrated in plants.
Researchers investigate interfacial water structure and reactivity in photocatalytic hydrogen evolution at TiO2 interfaces. Weaker water-TiO2 interactions and more flexible hydrogen-bond networks favor higher interfacial water reactivity, enabling photocatalyst design with improved performance.
Supercomputer simulations reveal the high-confidence structure of kinesin's neck region, which interacts with the microtubule track to bias stepping trajectory. The study provides a vital foundation for understanding cellular transport, with future studies aiming to refine the structural framework.
Researchers developed PASR, a computational method that recovers higher-frequency structural information from cryo-EM datasets, improving map quality and enabling higher-resolution reconstructions. The approach may reduce microscope usage time and data-storage demands for analyzing large, flexible, or heterogeneous biological complexes.
The spin states of myoglobin heme iron in aqueous solutions at room temperature were investigated using nitrogen K-edge X-ray absorption spectroscopy. The study found spin equilibriums between different states in deoxymyoglobin and metmyoglobin.
Researchers have developed a novel AlphaFold-based method that introduces a repulsive force between predicted structures, allowing for the sampling of multiple conformational states. This enables the prediction of diverse protein conformations rapidly and accurately, with potential applications in drug design and protein engineering.
Researchers developed an ultrafast infrared near-field optical microscopy technique that enables frequency-selective imaging of phonon polariton without sacrificing ultrafast time resolution. The technique reveals ultrafast optical modulation of phonon polariton in van der Waals heterostructures.
Researchers found a naked comet in an image from the Subaru Telescope archive, allowing for the study of Comet 28P/Neujmin's surface structures. This discovery helps understand how Solar System bodies formed and evolved.
Shunkai, developed by Professor Kenji Ohmori's team, integrates multiple layers for practical quantum computing, overcoming scalability and error correction challenges. The system uses 50 qubits initially, with plans to expand to 500 qubits, and will be partially open to external users for application development and demonstration.
A team of scientists used predictive AI to investigate the mechanism behind 'subjective color' - the phenomenon where people perceive colors in black-and-white patterns. The study suggests that learning the association between motion and color may enable colors to emerge from black-and-white stimuli.
Researchers used GPT-4 to arrange 99 emotion terms in a spatial layout, revealing a structure related to emotional intensity and arousal. The results showed that GPT-4 produced arrangements similar to those made by humans, with a more detailed analysis detecting variation in arousal.
Researchers successfully applied water freeze-drying to bacterial specimens, preserving native ultrastructure and reducing artifacts. The WFD method avoids chemical fixation and organic solvents, making it a practical and accessible strategy for high-resolution SEM analysis.
Researchers found that estradiol inhibits mouse THIK-1 by approximately 40%, depending on residues in the pond region of the channel. This effect has potential physiological or pathological significance for THIK-1 variants, with implications for microglia and macrophage function.
Researchers studied mice with altered VANGL1 protein to understand oocyte transport through the oviduct. Despite irregular fold alignment, cilia maintained orientation and transport was successful.
Human norovirus, a leading cause of gastroenteritis, exhibits conformational changes in its capsid structure, influencing viral infectivity and immune evasion. The study's findings provide a new understanding of the virus's dynamics and may lead to the development of next-generation vaccines and antiviral therapies.
Researchers used synchrotron X-ray absorption spectroscopy and atomic-scale computer simulation to measure how iron and cobalt atoms individually respond to temperature change. Iron and cobalt both contribute to suppressing thermal expansion, but iron's effect is stronger and shifts with small changes in the iron-to-cobalt ratio.
A new review reveals that heme converts tiny chemical changes into larger biological responses, regulating functions from microbial metabolism to mammalian signaling. Labile heme, a small and dynamic fraction of heme, plays a crucial role in this process, allowing for finely tuned sensitivity to environmental conditions.
A collaborative research group has developed an atom-holography microscope that can directly visualize three-dimensional atomic arrangements in nanoscale regions using electron-beam excitation. This breakthrough enables element-specific analysis of three-dimensional atomic structures without the need for synchrotron radiation.
Researchers discovered a novel signaling role for smooth septate junction proteins in regulating stem cell growth and preventing tissue disruption. By maintaining spatially localized aPKC enzyme, sSJ proteins prevent excessive intestinal stem cell proliferation.
Researchers discovered that lithium ions move through cooperative rearrangement of 'ion cages' formed by surrounding anions, not the previously proposed paddle-wheel mechanism. This finding provides new guidelines for designing safe and high-performance solid electrolytes.
Researchers have synthesized and determined the structure of a borate-linked 3D crystalline covalent organic framework, expanding the synthesis and implementation of highly ordered frameworks. The discovery paves the way for their use in advanced applications such as carbon sequestration, environmental remediation, and drug delivery.
Researchers developed a new method to prepare pseudopregnant mouse recipients by utilizing nonestrous female mice. This approach minimizes the number of stock animals needed, optimizing facility space and supporting the 3Rs principles in laboratory animal care.
Researchers investigated phosphate double-bond character in solid and liquid phases using oxygen K-edge X-ray absorption spectroscopy. The study found that the double-bond character increased with increasing negative charge in the solid phase, but decreased in aqueous solutions due to interactions between phosphates and Na+ ions.
Researchers discovered that lithium doping of a 12-benzene-ring molecule creates a material with strong optical responses due to synergistic effects between aromaticity and charge transfer. This finding establishes fundamental design principles for high-performance carbon-based photonic devices.
A research team has successfully designed a novel electrolyte for fluoride shuttle batteries, which boasts high electrochemical stability and reversibility. The KBF4-containing electrolyte effectively regulates the fluorination reaction, enabling reversible electrode reactions.
Researchers found a compact core in the 'Shadow Blaster' galaxy, which is likely heating gas and dust through intense star formation, producing high-energy neutrinos. This alternative pathway could contribute up to 20% of the high-energy neutrino background.
Researchers at NINN and SOKENDAI develop a new strategy for synthesizing three-dimensional macrocycles in a square shape, featuring acid responsiveness and recyclability. The method uses an imine bond to create the shape, respond to stimuli, and revert back.
New simulations show that a magnetic field can decrease the distance between forming binary protostars, explaining observed characteristics of Milky Way binary star systems. This process also gives insights into massive black hole evolution and merger formation.
Scientists have developed a method to measure the electronic structures of liquid water and organic molecules using soft X-ray absorption spectroscopy. By controlling the thickness of the liquid layer, they obtained XAS spectra of both the bulk liquid and the solid-liquid interface.
Researchers use a single rubidium atom trapped in an optical tweezer as a scanning probe to image fine structures of light patterns with spatial resolution surpassing the diffraction limit. The technique successfully visualizes both light intensity and polarization distributions at the nanoscale.
Astronomers observed a galaxy protocluster at 1.2 billion years after the Universe's birth, finding it was already shaped by its environment. The Loktak Protocluster had larger, redder galaxies with more rounded shapes than isolated galaxies.
The study revealed that sodium binding and electron transfer drive a precise dual trigger, pumping sodium ions across the cell membrane. This understanding provides a powerful new framework for designing targeted antibacterial drugs.
A team of astronomers found a thin atmosphere around a small trans-Neptunian object (TNO), which is not expected to retain atmospheres due to its cold temperature and weak surface gravity. The atmosphere is thought to be less than 1000 years old, suggesting recent formation or replenishment.
Researchers have developed a coherent Raman spectroscopy method that directly detects ångström-scale molecular films at interfaces without plasmonic enhancement or electronic resonance. This approach suppresses strong substrate background signals, allowing for highly sensitive interfacial Raman spectroscopy.
Researchers developed an ultrafast transient absorption microscope to analyze fluctuations and heterogeneities in light-harvesting antennae. The study revealed two kinetic components with nearly identical time constants and quantified photophysical properties associated with these components.
Researchers identified an ion channel that opens and closes in response to extracellular potassium ions in fruit flies, and found similar functionality in humans. This discovery reveals a novel sensor for extracellular K+ levels, potentially linking to diseases like epilepsy.
Researchers found that a spherical-shell dynamo can exist in two stable equilibrium states, with tiny initial fluctuations determining the polarity. The study suggests that breaking this stable state is necessary to trigger magnetic reversals, possibly through mechanisms outside magnetohydrodynamic theory.
The Subaru Telescope observed comet 3I/ATLAS after its closest approach to the Sun, revealing a lower carbon dioxide to water ratio than earlier space telescope observations. This finding indicates that the comet's chemistry is evolving over time.
Researchers at ExCELLS/NIPS successfully determined the capsid structure of Melbournevirus at 4.4 Å resolution using cryo-EM. The study's 'block-based reconstruction method' improved resolution, revealing detailed arrangement of proteins constituting the massive capsid.
Researchers discovered that just three neurons control posture and swimming direction in ctenophores, challenging traditional views of nervous system evolution. The statocyst, a gravity-sensing organ, uses an active, integrative circuit to dynamically coordinate ciliary activity.
Researchers have demonstrated that silicon nanospheres can enhance second-harmonic generation in monolayer transition-metal dichalcogenides while preserving valley-polarization information. The study provides design guidelines for efficient, polarization-preserving nonlinear light sources at the nanoscale.
Researchers developed an integrated NMR and LC–MS approach to distinguish between stereochemical variants of methionine oxidation in antibody drugs. The method resolves subtle structural variations relevant to biologic drug quality, strengthening stability testing and quality assessment.
Researchers developed a novel NMR approach to analyze the structure of therapeutic antibodies without isotope labeling. The technique uses site-specific methyl signals to detect subtle structural variations, including glycosylation patterns and local flexibility. This method has significant implications for ensuring the quality of biol...
Researchers isolated native SOD1 monomers using coordination cages, revealing the dimer interface and enabling targeted ligand binding. This approach provides a promising new strategy for finding drugs that inhibit disease-causing protein aggregation.
Researchers have demonstrated an angstrom-scale electroplasmonic platform enabling giant modulation (2000% V⁻¹ ) of near-field nonlinear optical effects across a broad spectral range. The discovery provides a novel scheme for highly efficient electro-optical conversion in an infinitesimal spatial scale.