362 results found
  1. July 2013

    Episode 2: July 2013

    In this episode we hear about plants doing maths, the evolution of cancer, why blood vessels don'€™t grow in the retina, the immune system and more.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    E. coli TraR allosterically regulates transcription initiation by altering RNA polymerase conformation

    James Chen et al.
    Cryo-electron microscopy structures, combined with biochemical experiments, show how the E. coli F element-encoded TraR protein regulates transcription initiation by altering RNA polymerase conformation and conformational heterogeneity.
    1. Chromosomes and Gene Expression

    Translational initiation in E. coli occurs at the correct sites genome-wide in the absence of mRNA-rRNA base-pairing

    Kazuki Saito et al.
    E. coli ribosomes incapable of base-pairing with the Shine-Dalgarno sequence are still selective for annotated start sites, indicating these sites are hard-wired for initiation by other mRNA features.
    1. Cell Biology
    2. Physics of Living Systems

    Spatiotemporal organization of branched microtubule networks

    Akanksha Thawani et al.
    A sequential reaction pathway involving TPX2, augmin and γ-TuRC governs the assembly and architecture of branched microtubule networks.
    1. Neuroscience

    Neurogenetic dissection of the Drosophila lateral horn reveals major outputs, diverse behavioural functions, and interactions with the mushroom body

    Michael-John Dolan et al.
    The generation and systematic characterisation of driver lines labelling a large number of neurons in the Drosophila innate olfactory processing centre bridges electron microscopy neuronal reconstructions, circuits and behaviour.
    1. Biochemistry and Chemical Biology
    2. Developmental Biology

    The major β-catenin/E-cadherin junctional binding site is a primary molecular mechano-transductor of differentiation in vivo

    Jens-Christian Röper et al.
    The primary molecular mechanosensor involved in a physiological process of mechanically induced cell fate differentiation is revealed here for the first time in vivo, highly sensitive and potentially shared by all metazoan epithelia.
    1. Structural Biology and Molecular Biophysics

    Asymmetry of movements in CFTR's two ATP sites during pore opening serves their distinct functions

    Ben Sorum et al.
    In the CFTR chloride channel, ATP bound in the catalytic site promotes pore opening, whereas ATP bound in the non-catalytic site supports unidirectional conformational cycling by preventing pore closure without ATP hydrolysis in the catalytic site.
    1. Developmental Biology
    2. Neuroscience

    Pioneer neurog1 expressing cells ingress into the otic epithelium and instruct neuronal specification

    Esteban Hoijman et al.
    Quantitative 4D image analysis identifies a group of cells which enter into the otic primordium during morphogenesis and instructs neuronal specification.
    1. Computational and Systems Biology
    2. Immunology and Inflammation

    Digital signaling decouples activation probability and population heterogeneity

    Ryan A Kellogg et al.
    Digital NF-κB signaling achieves orthogonal control over the probability of activation (percentage of activated cells) and dynamic response heterogeneity in the population via the area and shape of the input profile.
    1. Structural Biology and Molecular Biophysics

    A lipid bound actin meshwork organizes liquid phase separation in model membranes

    Alf Honigmann et al.
    A combination of imaging experiments and computer simulations on a model lipid membrane integrate the 'picket fence' and 'raft' models, and suggest that the interplay between actin binding, lipid phase separation and curvature compartmentalize the membrane.

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