69 results found
    1. Developmental Biology
    2. Structural Biology and Molecular Biophysics

    Large, long range tensile forces drive convergence during Xenopus blastopore closure and body axis elongation

    David R Shook et al.
    Blastopore closure in Xenopus is driven by two morphogenic mechanisms that have strongly context dependent effects on tissue movement and that generate tensile force across tissues: convergent extension, as expected, and, unexpectedly, convergent thickening.
    1. Cell Biology
    2. Developmental Biology

    Cell-intrinsic and -extrinsic mechanisms promote cell-type-specific cytokinetic diversity

    Tim Davies et al.
    Functional molecular analysis of cytokinesis in Caenorhabditis elegans four-cell embryos reveals cell-type-specific variation in the fundamental dependence on a robust f-actin cytoskeleton for successful cell division, mediated by both cell-intrinsic and -extrinsic pathways.
    1. Cell Biology
    2. Developmental Biology

    Physically asymmetric division of the C. elegans zygote ensures invariably successful embryogenesis

    Radek Jankele et al.
    Systematic analysis of C. elegans zygotes manipulated to divide equally demonstrates that daughter cell size asymmetry is critical for proper cell cycle timing, positioning, and fates during subsequent embryogenesis.
    1. Cell Biology
    2. Developmental Biology

    Optogenetic dissection of mitotic spindle positioning in vivo

    Lars-Eric Fielmich et al.
    New germline gene expression, knockout, and optogenetic tools reveal essential roles for Gα-GPR-1,2/Pins as a regulatable membrane anchor and LIN-5/NuMA as an activator of cortical dynein in mitotic spindle positioning.
    1. Developmental Biology
    2. Structural Biology and Molecular Biophysics

    Gastrulation: May the force be with you

    Shinuo Weng, John B Wallingford
    Understanding the coordination of the forces generated in embryos by two processes, convergent extension and convergent thickening, is key to understanding how a hollow sphere of cells develops into an elongated embryo.
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    1. Cell Biology

    BUB-1 targets PP2A:B56 to regulate chromosome congression during meiosis I in C. elegans oocytes

    Laura Bel Borja et al.
    BUB-1 recruits PP2A/B56 to regulate chromosome congression in meiosis I.
    1. Cell Biology
    2. Physics of Living Systems

    Co-movement of astral microtubules, organelles and F-actin by dynein and actomyosin forces in frog egg cytoplasm

    James F Pelletier et al.
    Live imaging of multiple cytoplasmic networks in frog egg extracts calls for new models for how egg cytoplasm is physically organized during cleavage divisions.
    1. Developmental Biology
    2. Evolutionary Biology

    An ancestral apical brain region contributes to the central complex under the control of foxQ2 in the beetle Tribolium

    Bicheng He et al.
    An ancestral apical brain center contributed to the evolution of the insect central complex requiring foxQ2, which is essential for the development of midline structures of the insect brain.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Zebrafish embryonic explants undergo genetically encoded self-assembly

    Alexandra Schauer et al.
    Blastoderm tissue organization and patterning in zebrafish explants is driven by a genetically encoded and controlled self-assembly mechanism, rather than a bonafide self-organization mechanism.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    The Caenorhabditis elegans protein SAS-5 forms large oligomeric assemblies critical for centriole formation

    Kacper B Rogala et al.
    SAS-5 forms oligomers, through a trimeric coiled coil and novel dimeric domain, that are necessary for centriolar localisation of SAS-5 and for centriole duplication.

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