519 results found
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Claudin-2-dependent paracellular channels are dynamically gated

    Christopher R Weber et al.
    Paracellular, trans-tight junction channels, which communicate between two extracellular compartments without crossing the plasma membrane, are a new class of ion channel with unitary behaviors similar to traditional transmembrane channels.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Metabolic and non-metabolic liver zonation is established non-synchronously and requires sinusoidal Wnts

    Ruihua Ma et al.
    Mouse genetic approaches show that multiple Wnt endothelial sources orchestrate the spatiotemporal distribution of hepatocyte functions during liver maturation and respecify metabolic zonation during liver repair.
  1. Meta-Research: A comprehensive review of randomized clinical trials in three medical journals reveals 396 medical reversals

    Diana Herrera-Perez et al.
    An analysis of more than 3000 randomized controlled trials published in JAMA, the Lancet and NEJM has identified 396 medical reversals.
  2. Point of View: Science, art, society and Klimt’s University of Vienna paintings

    Alberto E Pereda
    A set of paintings by Gustav Klimt highlights ongoing tensions in the relationships between art, science and society.
    1. Ecology

    Thermoregulation: Bugs battle stress from hot blood

    Joshua B Benoit, David L Denlinger
    A heat exchange mechanism in the head of kissing bugs helps to prevent stress and regulate their temperature while they feed on warm blood.
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    1. Cell Biology
    2. Evolutionary Biology

    Evolutionary Biology: How elephants beat cancer

    Stephen J Gaughran et al.
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    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Control of AMPA receptor activity by the extracellular loops of auxiliary proteins

    Irene Riva et al.
    Glutamate receptor auxiliary proteins exert their effects on receptor gating through two divergent extracellular loops, explaining subunit specificity and allowing the construction of null versions that form complexes normally but do not modify receptor gating.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    9Å structure of the COPI coat reveals that the Arf1 GTPase occupies two contrasting molecular environments

    Svetlana O Dodonova et al.
    A molecular model of the assembled COPI coat, determined by cryo-electron tomography of an in vitro reconstituted budding reaction, reveals details of interactions mediating coat assembly and shows the binding site of ArfGAP2.
    1. Cell Biology
    2. Developmental Biology

    Proteolytic processing of palmitoylated Hedgehog peptides specifies the 3-4 intervein region of the Drosophila wing

    Sabine Schürmann et al.
    Proteolysis of lipidated N-terminal peptides that tether Hedgehog morphogens to the surface of source cells is absolutely required for their coupled release and bioactivation in vivo in Drosophila melanogaster.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Autocatalytic microtubule nucleation determines the size and mass of Xenopus laevis egg extract spindles

    Franziska Decker et al.
    Quantitative microscopy and theory show that the size of Xenopus laevis egg extract spindles is controlled by a spatially-regulated autocatalytic growth mechanism driven by microtubule-stimulated microtubule nucleation.

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