1,740 results found
    1. Cell Biology

    Electron cryo-tomography reveals the subcellular architecture of growing axons in human brain organoids

    Patrick C Hoffmann et al.
    Combining cerebral organoid technology with cryo-correlative microscopy reveals the organization of cytoskeleton, membrane compartments, and protein synthesis machinery contributing to the rapid expansion of developing human axons.
    1. Neuroscience

    Visual pursuit behavior in mice maintains the pursued prey on the retinal region with least optic flow

    Carl D Holmgren et al.
    Digital reconstruction of environment combined with eye and head-tracking enabled the process of prey-detection and capture to be seen from the freely moving mouse’s point-of-view and shows the exact visual-field and retinal location mice use when chasing prey and the advantage.
    1. Microbiology and Infectious Disease

    Pathogen clonal expansion underlies multiorgan dissemination and organ-specific outcomes during murine systemic infection

    Karthik Hullahalli, Matthew K Waldor
    During Escherichia coli systemic infection, the replication of a minuscule fraction of the inoculum drives organ-specific clearance failures, systemic dissemination, and stochastic infection outcomes.
    1. Ecology

    Little evidence that Eurasian jays protect their caches by responding to cues about a conspecific’s desire and visual perspective

    Piero Amodio et al.
    Across five experiments, Eurasian jays’ caching behaviour provides little evidence of the ability to integrate cues about a potential pilferer’s visual perspective and desire and, challenging previous findings, to respond to either of the two social cues independently.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Adult stem cells and niche cells segregate gradually from common precursors that build the adult Drosophila ovary during pupal development

    Amy Reilein et al.
    Somatic stem and niche cells in the Drosophila ovary develop from common precursors through regulated proliferative expansion, followed by acquisition of position-specific behaviors, rather than through rigid early specification events.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    First-principles model of optimal translation factors stoichiometry

    Jean-Benoît Lalanne, Gene-Wei Li
    A parsimonious biophysical model correctly predicts the conserved expression stoichiometry of core bacterial mRNA translation factors, providing intuitive and quantitative design principles for in vivo pathway construction.
    1. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    Conformational changes in twitchin kinase in vivo revealed by FRET imaging of freely moving C. elegans

    Daniel Porto et al.
    Quantitative FRET imaging in moving C. elegans shows that stretch-unfolding of twitchin kinase occurs in the active muscle, whereby mechanical activity titrates the signaling pathway of this cytoskeletal kinase.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Competitive binding of MatP and topoisomerase IV to the MukB hinge domain

    Gemma LM Fisher et al.
    Topoisomerase IV and the ter-binding protein MatP competitively bind the hinge domain of the Escherichia coli Structural Maintenance of Chromosomes complex, MukB, leading to spatiotemporal regulation of MukBEF-topoisomerase IV activity.
    1. Cell Biology
    2. Developmental Biology

    Par3 cooperates with Sanpodo for the assembly of Notch clusters following asymmetric division of Drosophila sensory organ precursor cells

    Elise Houssin et al.
    Baz/Par3 and Sanpdo are required for clustering and activation of Notch receptors to allow intra-lineage private communication following asymmetric division of Drosophila epithelial cells.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Circular RNA repertoires are associated with evolutionarily young transposable elements

    Franziska Gruhl et al.
    Evolutionary analyses suggest that most mammalian circRNAs did not emerge from common ancestral circRNA precursors, arguing against widespread functional conservation.

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