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RBR E3 ubiquitin ligases utilise a 2-step catalytic mechanism previously defined for only few of the RBR family members. Here, the authors examine the poorly studied RBRs HOIL-1 and RNF216 to define general principles of RBR catalysis and regulation and identify specific functional differences.
Conformational heterogeneity is key to understand how macromolecular function and structure converge. Here, the authors propose an algorithm designed to estimate structural landscapes directly from Cryo-EM particle images.
Self-assembly processes usually yield symmetric compounds. Here, the authors report the distortion of a symmetric hydrogen-bonded resorcin[4]arene cage upon encapsulation of an iridium complex.
The recently described protein HAPSTR1 governs cellular stress resilience. Here, the authors discover a mammalian HAPSTR1 paralog, called HAPSTR2, which formed via retro-transposition and operates to augment and buffer cellular stress signaling.
The nature of the superconductivity in the kagome metals AV3Sb5 (A = K, Rb, Cs) remains under debate. Here, using muon spin spectroscopy, the authors find that the superconductivity in RbV3Sb5 and KV3Sb5 evolves from nodal to nodeless with increasing pressure and the superconducting state breaks time-reversal symmetry after suppression of the charge order.
Feedback control applied to mechanical resonators can lead to the formation of various complex dynamic behaviors. Here the authors demonstrate flexible and controllable switching between dynamical structures in the response of harmonically driven micro-mechanical resonators.
Cellular senescence and associated secretory phenotype (SASP) are thought to contribute to aging and tissue dysfunction, though it is unclear how SASP impacts regeneration. Here the authors show that SASP factors impair regeneration, and that Ptk7 is a key secreted protein mediating that dysregulation.
Here the authors establish the SPOC domain as a universal reader of the RNA Pol II CTD code and a versatile reader of phosphoserine marks found in co- and post-transcriptional regulators such as m6A writer and reader proteins.
Regulation of oriented cell divisions during development is important to position daughter cells and build a structured and functional tissue. Here the authors show that Annexin A1 is a key polarity protein that regulates planar orientation of the cell division axis to guide mammary epithelial morphogenesis.
Age-related osteoporosis is known to be dependent on TGFβ1 signalling. Here the authors show that a subset of neutrophils (identified by TGFβ1+CCR5+) increase during aging in mouse bone marrow resulting in bone loss, while a CCR5 antagonist can reduce the neutrophil numbers and increase bone mass in aged mice.
Soft robotics holds promise for realizing easy control over complex locomotion and deformation. Lin et al. report an earthworm-inspired untethered magnetic robot that consists one-piece-mold folded diaphragm to achieve large three-dimensional deformation with inside-volume change capability.
TLR3 activates a potent immune response by binding to dsRNA. Here the authors report cryo-EM analyses to show that TLR3 dimers laterally form a higher multimeric complex along dsRNA, providing the basis for cooperative binding and efficient signal transduction.
Superoxide dismutase (SOD) nanozymes show mitigating effect on oxidative stress-related diseases, but are limited by their modest activity. Here, the authors report a carbon dot SOD nanozyme with catalytic activity matching natural enzymes and unveil its catalytic mechanism.
SiO is an adequate anode material for next generation lithium-ion batteries, but little is known about its aging mechanism. Here, the authors report thermal instability of the graphite/SiO composite anode induced by the accelerated loss of lithium from SiO and have elucidated the interplay between graphite and SiO.
Photoelectrochemical oxidation provides a promising strategy for glucaric acid production. Here, selective oxidation of glucose to glucaric acid is realized on the photoanode of defective TiO2 decorated with single-atom Pt via a photoelectrochemical strategy.