149 results found
    1. Neuroscience

    The computation of directional selectivity in the Drosophila OFF motion pathway

    Eyal Gruntman et al.
    ON and OFF visual motion is computed with the same algorithm despite differences in circuit architecture.
    1. Neuroscience

    Asymmetric ON-OFF processing of visual motion cancels variability induced by the structure of natural scenes

    Juyue Chen et al.
    The fruit fly estimates visual motion by incorporating ON-OFF asymmetric processing that only improves performance when stimuli have light-dark asymmetries matched to natural scenes.
    1. Ecology

    Multistability and regime shifts in microbial communities explained by competition for essential nutrients

    Veronika Dubinkina et al.
    Multistability and regime shifts are common and species diversity is high in microbial communities when nutrient supplies are balanced and competing species have different stoichiometries of essential nutrients.
    1. Structural Biology and Molecular Biophysics

    Structural mapping of oligomeric intermediates in an amyloid assembly pathway

    Theodoros K Karamanos et al.
    Solution NMR provides structural and kinetic information about oligomers on pathway to amyloid fibrils that are precisely structured but not cytotoxic.
    1. Cell Biology
    2. Genetics and Genomics

    NHR-14 loss of function couples intestinal iron uptake with innate immunity in C. elegans through PQM-1 signaling

    Malini Rajan et al.
    Nuclear receptor NHR-14 regulates the subcellular localization of the zinc transcription factor PQM-1 to coordinate innate immunity with iron sequestration during pathogen infection in C. elegans..
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Homology sensing via non-linear amplification of sequence-dependent pausing by RecQ helicase

    Yeonee Seol et al.
    The rate of DNA unwinding by RecQ helicases is dramatically modulated by the DNA duplex stability in a geometry-dependent manner, providing an intrinsic mechanism for suppressing illegitimate recombination.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Hemozoin produced by mammals confers heme tolerance

    Rini H Pek et al.
    Heme accumulation is toxic, but deficiency of the heme transporter HRG1/SLC48A1 causes heme sequestration and crystallization into hemozoin within enlarged lysosomes of macrophages, thereby conferring heme tolerance to mammals.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Large protein organelles form a new iron sequestration system with high storage capacity

    Tobias W Giessen et al.
    An alternative iron storage system based on a 9.6 megadalton microbial protein compartment is able to sequester and store large amounts of iron.
    1. Ecology

    Algal-fungal symbiosis leads to photosynthetic mycelium

    Zhi-Yan Du et al.
    The capacity for symbiosis between photosynthetic microalgae and early diverging lineages fungi was demonstrated with microscopy and stable isotope exchange of carbon and nitrogen.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    Cryo-EM structures of remodeler-nucleosome intermediates suggest allosteric control through the nucleosome

    Jean Paul Armache et al.
    Cryo-EM structures capture different conformational states of chromatin remodeler-nucleosome complexes.

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