563 results found
    1. Plant Biology

    Anisotropic growth is achieved through the additive mechanical effect of material anisotropy and elastic asymmetry

    Firas Bou Daher et al.
    Growing upwards in the young seedling is controlled by two cooperative mechanical mechanisms: cellulose orientation in inner tissues and differential elasticity in epidermal cells.
    1. Neuroscience

    Deletion of a kinesin I motor unmasks a mechanism of homeostatic branching control by neurotrophin-3

    Thomas O Auer et al.
    Disrupting synapse formation between the retina and the brain in zebrafish larvae-by eliminating the molecular motor Kif5A-triggers a compensatory increase in the branching of retinal axons aimed at restoring synapse number.
    1. Neuroscience

    Impaired fast-spiking interneuron function in a genetic mouse model of depression

    Jonas-Frederic Sauer et al.
    Truncated Disrupted-in-schizophrenia 1 (Disc 1) ablates signaling of parvalbumin-expressing interneurons in the prefrontal cortex and underlies depression-related behaviour in mice.
    1. Genetics and Genomics

    Differing isoforms of the cobalamin binding photoreceptor AerR oppositely regulate photosystem expression

    Haruki Yamamoto et al.
    A novel B12 containing photoreceptor is synthesized as two different isoforms that interact with the same transcription factor, with one isoform directing activation and the other promoting repression of photosystem synthesis.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Insights into the molecular architecture and histone H3-H4 deposition mechanism of yeast Chromatin assembly factor 1

    Paul Victor Sauer et al.
    The CAF1 complex binds single histone H3-H4 dimers, and two such complexes associate with extended DNA elements to ensure the deposition of H3-H4 tetramers, the first step in the assembly of nucleosomes.
    1. Computational and Systems Biology

    Ecological feedback in quorum-sensing microbial populations can induce heterogeneous production of autoinducers

    Matthias Bauer et al.
    Quorum sensing enables heterogeneous production of autoinducers in microbial populations, suggesting an alternative mechanism to stochastic gene expression in bistable gene-regulatory circuits to control phenotypic heterogeneity.
    1. Chromosomes and Gene Expression
    2. Neuroscience

    Developmental programming modulates olfactory behavior in C. elegans via endogenous RNAi pathways

    Jennie R Sims et al.
    The OSM-9 TRPV channel is differentially regulated due to developmental programming via modulation by TGF-β signaling, endogenous RNAi and chromatin remodeling pathways.
    1. Structural Biology and Molecular Biophysics

    Structural basis for the reaction cycle of DASS dicarboxylate transporters

    David B Sauer et al.
    Structures of multiple states of two dicarboxylate transporters explain the conformational changes needed for substrate import.
    1. Structural Biology and Molecular Biophysics

    Structural basis of ClpXP recognition and unfolding of ssrA-tagged substrates

    Xue Fei et al.
    Cryo-EM structures of the AAA+ ClpXP protease bound to an ssrA degron reveal the mechanism of substrate recognition and show how the machine transitions from recognition to translocation and unfolding.
    1. Structural Biology and Molecular Biophysics

    Structures of the ATP-fueled ClpXP proteolytic machine bound to protein substrate

    Xue Fei et al.
    Cryo-EM structures of the ClpXP protease reveal how protein substrates are bound, show how spiral ClpX hexamers bind symmetry-mismatched heptameric ClpP rings, and suggest mechanisms for processive substrate translocation.

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