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Humans and rodents normally store more urine in the bladder when fast asleep than when awake. In this study, the production of the gap junction protein connexin43, a regulator of bladder capacity, is shown to oscillate in mouse urinary bladder muscle in synchrony with the circadian clock.
The detection of subclonal variants in heterogeneous cancer specimens is a challenge due to errors that occur during sequencing. In this study, a statistical algorithm and a sequencing strategy are reported that circumvent this issue and can accurately detect variants at a frequency as low as 1/10,000.
Electrochromic materials reversibly change their colour upon application of an electric field. Seidelet al. measure the optical properties of doped bismuth ferrite and report the largest electrochromic response for an inorganic material, which they attribute to the melting of oxygen-vacancy ordering.
Clusters of gold atoms protected with achiral thiolates can display chirality, and such chiral nanoparticles could open new possibilities in catalysis and sensing. Here, the first separation of the enantiomers of a gold cluster, protected by achiral thiolates, Au38(SCH2CH2Ph)24, is achieved.
Adars are adenosine deaminases that act on RNAs, including those encoding proteins involved in neuronal transmission and also Adar RNA. Here, Savvaet al. engineered knock-in Drosophila mutants with altered Adar autoediting and found that this changed the spectrum of adenosine deamination and Drosophilabehaviour.
Sodium channel Nav1.7 is essential for acute human pain but its role in chronic neuropathic pain is unclear. Minett and colleagues show that Nav1.7 expression specifically in sympathetic neurons, rather than sensory neurons, is required for the development of chronic neuropathic pain after injury.
Many channels have cytosolic domains which regulate channel function. Irieet al. show that the cytosolic C-terminal region of NavSulP, a prokaryotic voltage-gated sodium channel, forms a four-helix bundle which stabilises the tetrameric channel and accelerates channel inactivation.
Conjugated polymers are promising materials for organic photovoltaic solar cells. By usingin situgrazing incidence wide-angle X-ray diffraction, Ocko and collaborators report the formation of a new type of crystalline arrangement in a conjugated polymer material known as PCDTBT.
Electron spins at nitrogen-vacancy centres in diamond are thought to be the most promising building blocks for practical realizations of quantum computers. Yaoet al. present a scalable architecture for a quantum information processor based on such vacancy centres that operates at room temperature.
Studying the effects of extracellular matrix stiffening has been impeded because mostin vitromodels are static. Here, dynamic hydrogels are developed that stiffen in the presence of cells and are used to investigate the short-term (minutes-to-hours) and long-term (days-to-weeks) cellular responses to dynamic stiffening.
The large virus family,Paramyxoviridae, includes several human and livestock viruses. This study, testing 119 bat and rodent species distributed globally, identifies novel putative paramyxovirus species, providing data with potential uses in predictions of the emergence of novel paramyxoviruses in humans and livestock.
The assembly of microscopic particles into macroscopic structures may allow the fabrication of complex materials, but general strategies to provide a wide variety of structures are lacking. Khalilet al. develop a colloidal assembly system, which can be tuned to provide over 20 different pre-programmed structures.
An understanding of the genetic network that controls the flower-bearing structure—the inflorescence—in plants helps to explain the diversity seen in plant forms. This work identifies a new mechanism for the generation of inflorescence complexity in legumes, which is based on the function of theVEG1gene.
Self-assembly of multi-component systems can be used to construct discrete, well-defined, nanoscopic-sized cages. Pasqualeet al. report the self-assembly of conical-shaped carboxylic acid derivatives of calix[4]arene and calix[5]arene, and the uranyl cation UO22+into octahedral and icosahedral anionic metallocages.
Percolation transitions indicate the threshold above which a network can operate. This work examines a general class of models known as hierarchical networks, and shows they can be made to percolate explosively, if they share features of so-called 'small-world' networks.
Phage display screening can unravel protein–protein interactions, but its application has been mainly restricted to the cell surface. Here, a phage-based reagent is introduced that allows the targeting of combinatorial peptides to cell organelles, providing a tool for the discovery of intracellular ligand-receptors.
Fanconi's anaemia is characterized by an inability to repair DNA damage and is associated with mutations in the Fanconi anaemia nuclear complex, which includes the protein FANCM. This study reports the crystal structures of a fragment of FANCM bound to the histone-fold-containing protein complex, MHF1–MHF2.
The heavy-fermion material PuCoGa5 is characterized by unconventional superconducting properties. By combining point-contact spectroscopy and first-principles calculations, this study reveals a d-wave symmetry in the system's order parameter.
The terahertz spectral region is desirable for applications such as imaging or spectroscopy, but progress is hampered by a lack of efficient terahertz devices. By exploiting intraband transitions in graphene, Sensale-Rodriguezet al. demonstrate a broadband intensity modulator working at terahertz frequencies.
Abnormal mitochondrial fission leads to apoptosis and disease. Li and colleagues reveal the mechanism with which the transcription factor Foxo3a suppresses Fis1-mediated mitochondrial fission and apoptosis in cardiomyocytes and adrenocortical cancer cells, which involves miR-484 inhibition of Fis1 translation.