2,180 results found
    1. Cell Biology

    An adaptation of astronomical image processing enables characterization and functional 3D mapping of individual sites of excitation-contraction coupling in rat cardiac muscle

    Qinghai Tian et al.
    The fusion of astronomy and cellular cardiology reveals the 3D arrangement and the firing reliability of active excitation-contraction coupling sites in beating cardiac myocytes.
    1. Cell Biology
    2. Computational and Systems Biology

    A positive-feedback-based mechanism for constriction rate acceleration during cytokinesis in Caenorhabditis elegans

    Renat N Khaliullin et al.
    Positive feedback between contractile ring myosin and compression-driven cortical flow can explain the exponential accumulation of contractile ring components and constriction rate acceleration that ensures timely cell separation during cytokinesis.
    1. Cell Biology
    2. Developmental Biology

    Uncoupling apical constriction from tissue invagination

    SeYeon Chung et al.
    Spatially coordinated apical constriction occurs during Drosophila salivary gland invagination, but the salivary gland can form fully internalized and elongated tubes even when this process is completely blocked.
    1. Physics of Living Systems

    Controlling contractile instabilities in the actomyosin cortex

    Masatoshi Nishikawa et al.
    Combining quantitative biological experiment and physical description of actomyosin cortex reveals a contractile instability in the cortex of C. elegans embryo, and its biochemical control in order to robustly drive morphogenetic events.
    1. Cell Biology
    2. Evolutionary Biology

    Multicellularity: How contraction has shaped evolution

    Mukund Thattai
    Two new unicellular organisms reveal that coordinated contractions of groups of cells using actomyosin predated animal multicellularity during evolution.
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    1. Microbiology and Infectious Disease
    2. Structural Biology and Molecular Biophysics

    A contractile injection system stimulates tubeworm metamorphosis by translocating a proteinaceous effector

    Charles F Ericson et al.
    Bacteria produce a syringe-like structure, loaded with a single protein within the lumen of its needle-like tube, that is sufficient for stimulating animal metamorphosis.
    1. Cell Biology
    2. Developmental Biology

    Analysis of cellular behavior and cytoskeletal dynamics reveal a constriction mechanism driving optic cup morphogenesis

    María Nicolás-Pérez et al.
    High-resolution live imaging analysis shows a constriction mechanism that drives zebrafish optic cup morphogenesis and highlights the role of the extracellular matrix in transmitting tensions beyond the cellular level.
    1. Cell Biology

    Curvature-induced expulsion of actomyosin bundles during cytokinetic ring contraction

    Junqi Huang et al.
    Cytokinetic actomyosin ring disassembly occurs through a novel mechanism in which the increased ring curvature, generated through contraction, itself promotes the disassembly process.
    1. Neuroscience

    A circuit mechanism for the propagation of waves of muscle contraction in Drosophila

    Akira Fushiki et al.
    Coordinated activation and deactivation of inhibitory neurons triggers sequential muscle contractions that enable fruit fly larvae to propel themselves backwards and forwards.
    1. Cell Biology

    Nanoscale architecture of the Schizosaccharomyces pombe contractile ring

    Nathan A McDonald et al.
    Super-resolution microscopy reveals the nanoscale molecular architecture of 29 protein components of a eukaryotic contractile ring relative to the membrane.

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