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A deeper understanding of the mechanics of molecular machines is limited by the fast motions which are in the nanosecond or picosecond timescale. Here the authors present a real-time observation of structural changes in a rotaxane-based molecular shuttle by transient two-dimensional infrared spectroscopy.
Changes in climatology and perturbation will lead to different impacts on regional climate change, but their effect remains a subject of debate. Here the authors develop a new downscaling procedure that reveals the importance of both changes on the regional climate and examines their nonlinear effect.
Mice exposed to a two-bottle alcohol choice paradigm can be divided into high and low drinking groups. Here, the authors show that stimulating VTA neurons to induce higher phasic activity patterns that are observed in low alcohol drinking mice, suppresses alcohol drinking in mice that are high alcohol drinking.
Tankyrase 1 and 2 are poly(ADP-ribose) polymerases that mark proteins for degradation, but there is a current lack of knowledge about their distinct functions and substrates. Here, the authors elucidate the cellular roles and substrates of these polymerases using comparative functional and proteomics analyses of tankyrase knockout cell lines.
CCR5 is a co-receptor for HIV, and loss of function is associated with lower incidence of HIV but also with bone-destructive diseases. Here the authors show that ablation of CCR5 impairs osteoclast function and improves resistance to osteoporosis in mouse models.
Despite being an important cancer drug target, the role of epigenetic reader Brd4 in cell differentiation and development remains unclear. Here, the authors provide evidence that Brd4 plays an important role in adipogenesis and myogenesis by binding to active enhancers to regulate gene expression.
Many industrial applications require switchable adhesive properties in wet conditions, but this still remains challenging to achieve. Here the authors synthesize an adhesive based on host-guest interactions that exhibits reversible, tunable and fast regulation of the wet adhesion on diverse surfaces.
4E-BP1 is a translational repressor critical in mTOR signaling, whereas Snail is a critical promoter of epithelial to mesenchymal transition. Here the authors show that Snail induces resistance to mTOR inhibitors by repressing 4E-BP1 expression and promoting cell cycle progression via upregulating cycD.
Hydralazine is an FDA approved drug for the treatment of hypertension. Here, Dehghan et al. report that hydralazine triggers the cellular oxidative stress response by activating NRF2/SKN-1 signaling and extends C. elegans healthy lifespan, suggesting hydralazine may have potential to treat age-associated diseases more broadly.
Dark reversion of the red-light receptor phytochrome B (phyB) converts the receptor to the inactive state. Here, Enderle et al. show that PCH1 and PCHL bind phyB and suppress dark reversion, and that far-red and blue-light induced upregulation of PCH1 and PCHL increases red light sensitivity in Arabidopsis.
The North Atlantic Oscillation (NAO) drives biological responses in terrestrial ecosystems through oscillatory modes of climatic variability. Here, the authors show how landscape scale productivity responses to NAO are contingent upon the Atlantic Multidecadal Oscillation in southwestern Europe.
Induced pluripotent stem cell (hiPSC)-based models have inherent variations in their cellular and molecular output and readouts. Here, Hoffman and colleagues devise a method to account for gene expression variations in hiPSC-derived neurons from patients with childhood-onset schizophrenia.
The drivers of the increase in atmospheric methane since 2006 remain unclear. Here, the authors use satellite and in situ measurements of CO and CH4 to show that fossil fuels and biogenic sources contribute 12–19 Tg CH4per year and 12–16 Tg CH4per year respectively to the recent atmospheric methane increase.
E3 ubiquitin ligases regulate biological functions by ubiquitinating defined substrate proteins but overlapping specificities complicate the identification of E3-substrate relationships. Here, the authors construct an orthogonal UB transfer cascade and identify specific substrates of the E3 enzyme E6AP.
The biogenesis of eukaryotic ribosomes involves the coordinated interplay of a large number of assembly factors. Here, the authors detail how the conserved KH domain-containing assembly factors Dim2 and Krr1 function in ordering key events during ribosome maturation.
The formation of new blood vessels requires both polarized cell migration and coordinated control of endothelial cell contacts. Here, Cao and colleagues describe at the sub-cellular level the cytoskeletal and cell junction dynamics regulating these processes upon VEGF-induced cell elongation.
Fully integratable spectrometers have trade-offs between size and resolution. Here, the authors present a nano-opto-electro-mechanical system where the functionalities of transduction, actuation and detection are fully integrated, resulting in an ultra-compact high-resolution spectrometer with a micrometer-scale footprint.
The expansion of agriculture and rangelands can cause ecological spillover effects across cultivated-natural ecosystem boundaries. Here, Luskin et al. show irruptions of oil palm-subsidized wild boar alter the abundance and diversity of understory trees >1 km into a primary forest reserve in Malaysia.
Probing the nanoscale photoconductivity of methylammonium lead triiodide is important for understanding the microstructures of the solar cell devices, but scanning probe methods suffer from sample degradation. Here Chu et al. solve the problem with noncontact microwave impedance microscopy.
Quantifying the individual capacitance contributions of in-pore ions during charging remains a challenge. Here the authors design silica-grafted ionic liquids to reveal the charging behaviors of cations and anions separately, providing fresh insight into the storage mechanism of supercapacitors.