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Intramolecular proton relays are proposed to enhance oxygen evolution for heterogeneous (hydro)oxide electrocatalysts, but molecular-level evidence remains limited. Now it has been shown, using an aza-fused microporous polymer with Ni–Fe sites, that adjacent Ni³⁺–OH sites relay protons from Fe⁴⁺=O, accelerating the water nucleophilic attack pathway and achieving high turnover frequencies with pH-tunable kinetics.

Spatiotemporal insight into photoactivation of the prototypical B₁₂ photoreceptor CarH is revealed across nine orders of magnitude in time, identifying a transient adduct that distinguishes it from thermally activated B₁₂ enzymes.

The zinc–zinc bonded complex, Cp*ZnZnCp* (Cp* = pentamethylcyclopentadienyl), undergoes facile addition to the metal (or semi-metal) centres of a series of main group carbene analogues based on silicon, aluminium, gallium or indium. The addition of Cp*ZnZnCp* to silicon(II) provides a compelling case for a prototypical reductive addition process.

The isolation of catenated nitrogen compounds is difficult, in part because these chains can readily lose nitrogen, creating a strong thermodynamic push towards decomposition. Now, a series of molecules containing radical anions of four-atom nitrogen chains have been synthesized and studied under ambient conditions; the chain can cleave into N1 and N3 fragments, and can act as a source of nitrene radical anion.

As quantum simulations advance, improving classical methods for modelling quantum systems remains crucial as they provide key benchmarks for quantum simulators. Here the authors present a scalable tensor-network algorithm for simulating open quantum systems, addressing key limitations of existing approaches.

This study highlights an emergent mechanism in non-natural biocatalysis, showcasing the role of protein engineering in addressing challenges in chemical synthesis.

Methylthio-alkane reductases are recently discovered enzymes that can produce methanethiol and small hydrocarbons from methylated sulfur compounds. Now the cryo-EM structure of a methylthio-alkane reductase complex is solved, revealing large metalloclusters previously observed only within nitrogenases.

The coexistence of frustrated magnetism and bond order is demonstrated in a family of antiferromagnets. Layers of dual frustrated orders are interleaved in the same crystal lattice, which presents an exciting possibility for engineering new responses.

To enable electrochemical C–N bond formation, the authors have developed an oxy reductive synthetic strategy. Using a pulsed voltage sequence, partial reduction and partial oxidation of separate reactants onto the same catalyst surface promote their coupling.

This Reusability Report tests the ability of a foundation model, ActFound, to predict the antibacterial activity of plant natural products. We found that although all models performed poorly on this task, ActFound performed better than similar models.

Ultrafast laser pulses are useful to study electron dynamics in chemical bonds, but their influence on bond breaking is not fully understood. Wu et al. study H₂ bond breaking with coincidence techniques, and find a phase-dependent anisotropy of the H⁺fragmentation even for isotropic multicycle laser pulses.

The mechanism of the multiple-q charge density wave phase in the antiferromagnetic kagome metal FeGe is not fully understood. Here the authors reveal dimerization-driven hexagonal charge-diffuse precursor and identify the fraction of dimerized/undimerized states as the key order parameter of the phase transition.

Interfacial water is of crucial importance in biology and engineering. Here, the authors identify structural transitions of interfacial water at graphite surfaces under varying electric fields and environmental conditions.

The authors identify a single main-chain hydrogen bond required to keep GABA_A receptors closed in the absence of neurotransmitter. Electrophysiology and molecular dynamics simulations suggest disruption of this bond is a key component of channel opening during inhibitory synaptic signaling in the brain.

67 million customers across the US rely on drinking water utilities that face higher climate risk than accounted for, which exposes major gaps in climate adaptation and resilience planning, suggests an assessment of vulnerability, exposure, and hazards across 1,455 municipal utilities.

Peroxidases have long been considered to use ferryl heme intermediates (Fe(IV) = O) to catalyze oxidative chemistries. Here, Williams et al. find that ferric-oxyl (Fe^III–O^•–) excited states exist along the catalytic reaction coordinate of a peroxidase.

The authors describe the discovery of a series of potent non-competitive allosteric inhibitors of the ZIKV NS2B-NS3 protease, which exhibit antiviral activity in vitro and robust oral efficacy against ZIKV infections in a mouse model.

The molecular chemical ‘fuelling’ of the catalysis-driven motor 1-phenylpyrrole 2,2′-dicarboxylic acid, which operates by a Brownian information ratchet mechanism, facilitates dynamics that are otherwise kinetically inaccessible.

Molecular glue degraders have consistently been discovered retrospectively, despite their increasing importance. Herein, a high-throughput approach is described that modifies existing ligands into molecular glue degraders.

ATF6α activation in human and preclinical models of hepatocellular carcinoma is significantly associated with an aggressive tumour phenotype characterized by reduced survival, glycolytic reprogramming and local immunosuppression.

Here, the authors show that 2’-O-methylated RNA fragments from ribosomal RNA naturally block TLR7 and TLR8, helping to avoid avoid harmful self-RNA detection and autoimmunity.

Deep learning-based generative tools are used to design protein building blocks with well-defined directional bonding interactions, allowing the generation of a variety of scalable protein assemblies from a small set of reusable subunits.

Enantioselective activation of a single C–F bond in a difluoromethylene group is achieved using a chiral transition metal catalyst and a fluorophilic activator.

A study presents a biocatalytic method for the formation of sterically hindered biaryl bonds, providing a tunable approach for assembling molecules with catalyst-controlled reactivity, site selectivity and atroposelectivity.

Concrete durability is crucial for infrastructure longevity. Here the authors use atomistic simulations to show how aluminum alters the bonding and surface energetics of cement hydrates, explaining its paradoxical dual role in durability.

Actinide compounds possess complex electronic structures. Here the authors introduce the satellite peak in actinide M₄-edge resonant inelastic X-ray scattering to probe the number of localized 5 f electrons and assesses bond covalency in actinide compounds.

Amorphous sulfurized polyacrylonitrile suppresses polysulfide shuttling in Li–S batteries, enabling long cycle life, but the structural processes involved during synthesis and initial cycling remained unclear. An operando pair distribution function, wide-angle scattering and sulfur absorption spectroscopy reveal S–C bond formation, π–π stacking and sulfur-chain shortening, which enable reversible sulfur redox.

WIN332 is an HIV-1 Env protein designed to elicit a new class of Asn332-glycan-independent antibodies (type II) to the V3-glycan site of Env. WIN332 immunization rapidly induces type-II V3-glycan antibodies with low inhibitory activity indicative of a neutralization activity in macaques.

This study shows how the bacterial retron Eco2 defends against viruses. Phage nucleases trigger activation of Eco2, which cuts RNAs, shuts down protein production and stops phage replication.

Two-dimensional poly(arylene vinylene) frameworks are promising polymer semiconductors, yet obtaining highly crystalline materials is a major challenge. Now a series of 11 highly crystalline or single-crystalline 2D poly(arylene vinylene)s have been prepared—from 2D imine-linked covalent organic frameworks through a Mannich-elimination strategy—with diverse lattices, enhanced conjugation and specific surface areas up to 2,000 m² g⁻¹.

The concept of resonant valence bond phases has inspired many areas of condensed matter physics, but few realistic models have been identified. Now an analytical solution of such a phase has been found for pyrochlore and related lattices.

Many chemical reactions rely on the preference of copper for positive oxidation states. In this work, the authors report that the reaction of an N-heterocyclic carbene ligated copper alkoxide with a dimeric magnesium(I) compound results in a stable compound with a Cu-Mg bond which acts as a nucleophilic source copper in the formal oxidation state of Cu(-I).

Authors unveil how strain precisely tailors octahedral tilts, charge transfer, and orbital–spin reconstruction in LSMO/LCO bilayers, enabling robust interfacial Mn–Co antiferromagnetism and tunable magnetism.

Allostery is a key molecular mechanism underpinning control and modulation in a variety of cellular processes. Here, the authors present a method that can be used to predict allosteric sites and the mediating interactions that connect them to the active site of the protein.

The transcription factor ATF4 and its effector lipocalin 2 (LCN2) have a key role in immune evasion and tumour progression, and targeting the ATF4–LCN2 axis might provide a way to treat several types of solid tumour by increasing anti-cancer immunity.

By using laser tweezers, the authors show that a single α-catenin molecule does not resist force on F-actin. However, clustering of multiple molecules and force applied toward F-actin pointed end engage a molecular switch in α-catenin, which unfolds and strongly binds F-actin.

Catch bonds are unique protein-protein interactions where the bond lifetime increases under external pulling forces. Here, the authors engineer an artificial catch bond based on a non-catch bonding human gut bacterial adhesion protein complex.

Enzymes adapt by sampling new conformations while balancing destabilizing effects of mutations. Here, the authors reveal how TEM-1 β-lactamase acquires cefotaxime resistance through reshaping of dynamic conformational ensembles and localized stability networks, offering insight into the molecular framework of the activity-stability tradeoff.

This study investigates a calcium-permeable AMPAR–gated microcircuit in the nucleus accumbens during social bonding in prairie voles. By showing that disrupting calcium-permeable AMPAR signaling impairs ensemble-level encoding despite increasing single-neuron selectivity, the work reveals how coordinated ensemble dynamics transform social interaction into enduring attachment.

Chlorine electrosynthesis from seawater is limited by poor selectivity and stability under industrial-scale conditions. Here atomic-step-enriched ultrafine high-entropy alloy nanowires enable highly efficient chlorine evolution at 10 kA m⁻² for over 5,500 h through dynamic Pt–O active sites, reducing electricity consumption and feedstock costs for next-generation chlor-alkali processes.

Orange Carotenoid protein (OCP) is the only photoreceptor with a carotenoid for sensing. Here, the authors report crystal structures of the early OCP photoproduct, suggesting that photo-sensing involves single bond isomerization.

Liquid ultrafast electron scattering measures structural responses in liquid water with femtosecond temporal and atomic spatial resolution to reveal a transient hydrogen bond contraction then thermalization preceding relaxation of the OH stretch.