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It is unclear whether pathogens can advantageously exploit the host's immune response. UsingCandida albicans, the authors show that host IL-17A binds to the fungi and induces nutrient starvation and autophagy, which eventually leads to enhanced biofilm formation and resistance to the hosts' defence.
GALgenes enhance their own transcription via the transcription factor Gal4p, and the number of Galp4 sites in a promoter is expected to strengthen the feedback. In this study, Hsuet al. show that instead the feedback loops are activated by genes that have frequent bursts of expression and fast RNA decay kinetics.
The peripheral stalks of rotary ATPases counteract torque generated by rotation of the central stalk during ATP synthesis or hydrolysis. Stewartet al.report the crystal structure of an A-type ATPase/synthase peripheral stalk and identify bending and twisting motions that permit the radial wobbling of the headgroup.
Humans understand actions by making inferences about the person's intentions. Comparing humans with chimpanzees, this study shows that humans refer to the actors' faces more than chimpanzees do when observing goal-directed actions, indicating that humans view actions by integrating information from the actor.
β-Catenin can be oncogenic but finding inhibitors has been a challenge. Here, five compounds are identified, which attenuate transcriptional β-catenin outputs in colorectal cancer cells, and the response to one of them is shown to require an intrinsically labile α-helix next to the BCL9-binding site in β-catenin.
Dolomite sedimentary rock has lateral metre-scale periodic variations in porosity and composition, which may provide information on formation and transformation. This study suggests that such variations are fossilized chemical waves emerging from stress-mediated mineral-water interaction during sediment burial diagenesis.
Seryl-tRNA synthetase is important in vasculogenesis and contains a unique domain at its C-terminus. In this study, the unique domain is shown to target the protein to the nucleus, block expression ofvegfaand be essential for vasculogenesis in zebrafish.
Tuning the bandgap of complex transition metal oxides in a manner that preserves their intrinsic properties has so far remained elusive. Choiet al. demonstrate that the bandgap of bismuth titanate can be varied by substitutional alloying with lanthanum cobaltate, without altering its ferroelectric properties.
Algae show much promise in the production of biofuels owing to their high photoautotrophic biomass and lipid production rates. In this study, the draft genome ofNannochloropsis gaditanaCCMP526 and a method for the transformation of this alga are reported, facilitating the investigation of lipid synthesis and biofuel production.
The Na+/K+-ATPase pump exports three Na+ ions for the exchange of two K+ ions, and three transient current components have been associated with Na+ binding and release. Now, these three components are found to be tightly correlated confirming that the binding and release of Na+ions is sequential.
Molecular factors, regulating the expression of specific glycolytic enzymes that favour biosynthetic processes, have remained unknown. Panasyuket al. identify PPARγ as a novel transcription factor turning on pyruvate kinase M2 and hexokinase 2, which are frequently upregulated in pathophysiological growth.
Detailed analysis of axis development in mouse embryo has been limited. Morriset al. developed an in vitroculture technique that enables the real-time observation of an anterior visceral endoderm formation and show that cell marker asymmetry within the AVE subdomain dictates the direction of the AVE migration.
Myeloid cells are important in the response to severe infection by invasiveStreptococcusGroup A. In this study, a distinct population of immature myeloid cells with ring shaped nuclei that produce interferon-γ are shown to be important for protection of mice against the early stages of invasive infection.
The spin–orbit interaction affects the electronic structure of many solids to give rise to a host of unusual phenomena. Bahramyet al.theoretically examine its role in the non-centrosymmetric compound BiTeI, and find that under the application of pressure, it leads to topologically insulating behaviour.
Neural stem cells generate neurons in the adult hippocampus, but the dynamics of neuron production remain unclear. This study shows that stem cells produce type-2a progenitors, which do not expand as previously thought, but rather generate amplifying immature neuroblasts.
Actin filaments are involved in the modulation of nuclear shape and function, but mechanistic understanding of these processes is lacking. Versaevelet al. show that orientation and deformation of the nucleus are regulated by lateral compressive forces driven by tension in central actomyosin fibres.
Spatial epidemiology studies identify malaria hotspots, which sustain transmission and so could be targeted by control programmes. This study uses spatial data on larval sites and malaria episodes to show that transmission can be disrupted by targeting vector breeding sites close to and downwind of malaria hotspots.
PADI4 is an enzyme that converts arginine residues to citrulline. Here, Tanikawa and colleagues show that, in response to DNA damage, histone H4 and Lamin C are citrullinated in a p53 and PADI4-dependent manner andPadi4-dependent manner and Padi4 null mice are resistant to radiation-induced apoptosis in the thymus.
Zonal occludens and claudin form tight junctions near the apical surface of cells and are important in polarized epithelia. In this study, the translational regulatory sequence-specific RNA binding protein CPEB is shown to be required for the correct localization of zona occluden 1 mRNA in mammary epithelial cells.
Field-effect transistors fabricated from carbon nanotubes have been investigated extensively over the past two decades. This study demonstrates a nanotube-based integrated circuit design that substantially improves the speed and power consumption with respect to silicon-based integrated circuits.