5,172 results found
    1. Biochemistry and Chemical Biology

    An explanation for origin unwinding in eukaryotes

    Lance D Langston, Michael E O'Donnell
    CMG helicase translocates with force while encircling duplex DNA, enabling two opposing CMG complexes at an origin to melt the duplex and switch to encircling separate single strands.
    1. Neuroscience

    Active information maintenance in working memory by a sensory cortex

    Xiaoxing Zhang et al.
    Delay-period activity of anterior piriform cortex is important for working memory tasks requiring active maintenance and encodes the maintained information.
    1. Developmental Biology

    Fetal and trophoblast PI3K p110α have distinct roles in regulating resource supply to the growing fetus in mice

    Jorge López-Tello et al.
    Fetus and trophoblast interplay to regulate fetal nutrient supply and, ultimately, affect healthy growth.
    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. Cell Biology
    2. Neuroscience

    Expression of WIPI2B counteracts age-related decline in autophagosome biogenesis in neurons

    Andrea KH Stavoe et al.
    The dynamic phosphorylation of autophagy component WIPI2B is critical to maintain autophagosome biogenesis in neurons, and ectopic expression of WIPI2B can restore rates of autophagosome biogenesis in aged neurons.
    1. Structural Biology and Molecular Biophysics

    Cryo-EM of dynein microtubule-binding domains shows how an axonemal dynein distorts the microtubule

    Samuel E Lacey et al.
    Relion was used to solve structures of microtubules decorated with dynein microtubule-binding domains revealing that an axonemal dynein distorts the microtubule cross-sectional curvature.
    1. Neuroscience

    Vasoactive intestinal peptide-expressing interneurons are impaired in a mouse model of Dravet syndrome

    Kevin M Goff, Ethan M Goldberg
    Vasoactive intestinal peptide-expressing GABAergic interneurons in cerebral cortex express the sodium channel subunit Nav1.1, and a defined subset of VIP interneurons are dysfunctional in a mouse model of Dravet syndrome.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cryo-EM structure of the rhodopsin-Gαi-βγ complex reveals binding of the rhodopsin C-terminal tail to the gβ subunit

    Ching-Ju Tsai et al.
    The structure of a light-sensitive G protein-coupled receptor in complex with a Gi-protein heterotrimer provides a structural foundation for the role of the receptor C-terminal tail in scaffolding and signaling.
    1. Neuroscience

    Sonic hedgehog signaling in astrocytes mediates cell type-specific synaptic organization

    Steven A Hill et al.
    Astrocytes modulate synaptic remodeling of developing circuits in a cell type-specific manner, with long lasting deficits in synaptic plasticity.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The autophagic membrane tether ATG2A transfers lipids between membranes

    Shintaro Maeda et al.
    The autophagy protein ATG2A tethers membranes and transfers lipids between them, suggesting that autophagosome membranes grow upon the acquisition of lipids from the ER through the ATG2A bridge.

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