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The distribution of Berry charge over a ring of exceptional points, called a Weyl exceptional ring, is experimentally demonstrated.

A method based on non-Hermitian singularities, or exceptional points, is established and used to increase the Sagnac scale factor and enhance the sensitivity of ring-laser gyroscopes.

Natural product–inspired compounds are primed to interact with and manipulate biological processes, but obtaining these complex molecules poses synthetic challenges. The development of a 12-step, 1-pot cascade reaction leads to the 'centrocountins', tetrahydroindoloquinolizines that modulate mitosis by targeting the centrosome-associated proteins nucleophosmin and Crm1.

Combining a low-coherence source with silicon nitride ring resonators featuring normal group velocity dispersion enables electrically pumped, high-power microcombs, providing on-chip power up to 158 mW and high-coherence comb lines with linewidths as narrow as 200 kHz.

Mycobacterium tuberculosis has a proteasome similar to eukaryotes. This study reveals how the activator Bpa recruits its substrate HspR, providing structural and mechanistic insights. The authors identify key Bpa residues involved in substrate binding, shedding light on the Bpa-proteasome pathway.

The astrocytic transporter, GAT3, is a drug target for epilepsy. Here, the authors report the structures of human GAT3, bound to an inhibitor, to substrate GABA, or in substrate-free state, revealing the mechanism of transport and selective inhibition.

Tree rings are a crucial archive for Common Era climate reconstructions, but the degree to which methodological decisions influence outcomes is not well known. Here, the authors show how different approaches taken by 15 different groups influence the ensemble temperature reconstruction from the same data.

TRIM5α is an E3 ligase that inhibits retroviral replication. Here, the authors delineate the biochemical mechanism that accelerates N terminal autoubiquitylation of TRIM5α upon its association with the retroviral capsid and, thus, enables recognition of an infection-associated molecular pattern.

Spatially resolved images of M87 obtained at a wavelength of 3.5 mm in 2018 show a ring-like accretion structure, the inner (outer) edge of which connects the black hole (jet).

In this work, a library of several hundred million compounds was computationally docked to a cryoEM structure of the orphan G protein-coupled receptor GPR139, leading to the discovery of a potent agonist with in vivo effects and insights into GPR139 signalling.

Amines are highly valued molecules, used to understand biological processes and in the discovery of new medicines. However, medium-sized cyclic and macrocyclic amines are extremely challenging to synthesize and are therefore underutilized. Now, up to 15-membered cyclic amines can be formed directly from smaller, more accessible rings via an organoborane-catalysed two-carbon-unit C–C bond insertion.

The sugar d-apiose is important in plant cell wall polysaccharides. Here the authors elucidate the complex, multistep biosynthetic pathway for its production using enzyme crystal structures and computational analysis.

Polycyclic aromatic hydrocarbons (PAHs) represent key molecular building blocks in extraterrestrial environments but the understanding of their formation and growth in this environment has remained elusive. Here the authors reveal how naphthalene can be efficiently formed via rapid radical–radical reactions.

The intrinsic Kerr nonlinearity in ring resonators is exploited to demonstrate passive isolation of a continuous-wave laser. Up to 35-dB isolation with 5-dB insertion loss was achieved on-chip.

A generative AI approach is developed for predicting materials synthesis recipes—a complex challenge in materials science. Using this approach, the authors experimentally synthesized a material using AI-generated synthesis recipes.

Tissue stiffness mediated by Piezo1 is shown to regulate the expression of diffusive guidance cues in the developing Xenopus laevis brain, revealing a crosstalk between mechanical signals and long-range chemical signalling.

DNA nanotechnology, including DNA machines and devices for computing, is a rapidly expanding field of research. Here, the authors fabricate DNA catenane machines for the programmable arrangement of gold nanoparticle cargoes, and study their switchable spectroscopic features.

Single-cell manipulation and processing techniques and improvements in mass spectrometry sensitivity make single-cell proteomic profiling feasible. This study presents a label-free approach for the characterisation of native N-glycans of single mammalian cells and ng-level blood isolates, demonstrating the potential to detect cell surface glycome changes at the single-cell level in health or disease.

PRT1 is an E3 ligase that recognizes type-2 hydrophobic aromatic Arg/N-degrons. Here, the authors reveal the structure of the ZZ domain of Arabidopsis PRT1 bound to bulky hydrophobic type-2 N-degrons, showing a unique binding site formed by a substantial conformational change of two loops and uncovering an intramolecular tandem RING dimer essential for its ubiquitylation activity.

Cardiac ryanodine receptors (RyR2) are critical for heart contraction. Here, the authors use 3D MINFLUX microscopy to image receptor subunits and RyR2 orientation with nanometre resolution, thereby providing a molecular view of the organisation and clustering of these cardiac muscle receptors.

The membrane-embedded c-ring allows the passage of protons to power the synthesis of ATP by the FoF1 ATPase. Previous structural data have shown the proton acceptor-donor sites in a closed, ion-locked conformation. Structural and computational data now reveal the open conformation of the yeast mitochondrial c₁₀ ring.

The full-length structure of HUWE1 reveals the bipartite organization of a giant E3 ubiquitin ligase, comprising a catalytic HECT domain and a large, ring-shaped scaffold that provides docking sites for various substrates and regulates E3 activity.

Photoinduced isomerization reactions, including ring-opening reactions, lie at the heart of many chemical processes in nature. The pathway and dynamics of the ring opening of a model heterocycle have now been investigated by femtosecond photoelectron spectroscopy combined with ab initio theory, enabling the visualization of rich dynamics in both the ground and excited electronic states.

A key challenge in the self-assembly of block copolymers is obtaining independent control over molecular structure and hierarchical structure in all dimensions using scalable one-pot chemistry. Here the authors show the ring opening polymerization-induced crystallization-driven self-assembly of poly-L-lactide-block-polyethylene glycol block copolymers into 1D, 2D and 3D nanostructures.

Oximes are used in many scientific and industrial domains, ranging from organic synthesis through biotechnology to materials science. Here the authors introduce an approach that enables the synthesis of oximes from hydrocarbons via the oxidative oximation of methylene C-H bonds — the most prevalent molecular unit in the world of molecules.

How inflammation spreads from the skin to the joints in psoriatic disease is unclear. Here, the authors show that joint-resident fibroblasts can control differentiation of infiltrating skin-derived myeloid precursors that can become inflammatory macrophages.

A quantum memory that combines high-efficiency and long lifetime is now demonstrated. Employing a collective excitation, or spin wave, in an ensemble of atoms in a trap improves memory lifetime, while incorporating the trap into an optical ring cavity simultaneously aids higher retrieval efficiency.

The cytoplasmic receptor RIG-I recognizes viral RNAs and initiates a protective innate immune response against a number of important viruses. Here, it is shown that RIG-I is regulated by ubiquitination.

Researchers present a scalable hybrid photonic processor that uses mode- and wavelength-division multiplexing to overcome electronic limits, demonstrating ultralow latency and real-time signal processing for next-generation communication networks.

Two pathways in ubiquitylation are linked, as the RING domain E3 ligase Ubr1, from the N-end rule pathway, is found to bind and cooperate with the HECT domain E3 Ufd4 from the ubiquitin-fusion degradation pathway.

De novo and inherited dominant variants in genes encoding U4 and U6 small nuclear RNAs are identified in individuals with retinitis pigmentosa. The variants cluster at nucleotide positions distinct from those implicated in neurodevelopmental disorders.

Both laser stabilization and isolation are demonstrated simultaneously by using Kerr nonlinearity in a high-Q silicon nitride ring resonator to self-injection lock a distributed-feedback laser, bringing on-chip lasers closer to real-world fully integrated applications.

This study detects Chlamydia pneumoniae in human retina and brain, increasing with AD severity. Retinal pathogen load with Aβ₄₂ may predict AD stage. In models, infection drives Aβ deposition and NLRP3 activation, worsening pathology and cognition.

Photonic crystal microresonators permit precise control of nonlinear optical processes. By suppressing specific parasitic processes, they enable the efficient and robust generation of single-mode squeezed vacuum states of light.

A completely solid-state, single-chip, microwave-frequency surface acoustic wave phonon laser can generate coherent phonons from thermal noise or resonantly amplify injected phonons using only a direct current bias field.

The Star of David topology is an iconic symbol that has been used in religious and cultural contexts for thousands of years. Now it is assembled in molecular form through a hexameric circular helicate generated by six tris(bipyridine) ligands entwined about six iron(II) cations. The structure of the two triply-entwined 114-membered rings is revealed by X-ray crystallography.

The Nup82–Nup159–Nsp1 complex, which plays a key role in mRNA export, is recruited late during the process of nuclear pore complex (NPC) assembly. Here the authors combine crosslinking mass spectrometry, biochemical reconstitution and molecular modeling to gain insights into the mechanism of Nup82 recruitment to the NPC.

Fertilization under greenhouse warming conditions is expected to accelerate tree growth and potentially increase the biological storage of CO₂. Here the authors analyse ring width measurements from 1768 conifers from the Spanish and Russian mountains and demonstrate that longevity requires slow growth rates at least in mountainous regions.

The authors demonstrate dual-probe multi-messenger imaging of high-energy-density plasmas based on laser-wakefield-accelerated electrons. This enables spatiotemporally resolved simultaneous probing of plasma hydrodynamics and electromagnetic field evolution with both x-ray and electron beams.

Using time-resolved Coulomb-explosion imaging, the authors capture a 600 fs pseudorotation in the benzene cation, revealing coherent vibronic dynamics around a conical intersection and visualizing transient structural variations.

A combined theoretical and experimental approach has been used to investigate the structure and bonding of an all-boron cluster (B₁₉⁻). Calculations suggest that the minimum energy structure is a near-planar one — in which a pentagonal B₆ unit is encircled by a larger B₁₃ ring — possessing two concentric aromatic π systems.