1,933 results found
    1. Physics of Living Systems

    Active torque generation by the actomyosin cell cortex drives left–right symmetry breaking

    Sundar Ram Naganathan et al.
    The actomyosin cytoskeleton generates active chiral torques that lead to left-right asymmetry in C. elegans embryos.
    1. Cell Biology
    2. Physics of Living Systems

    Centering and symmetry breaking in confined contracting actomyosin networks

    Niv Ierushalmi et al.
    Novel mechanisms for cellular centering and symmetry breaking involving persistent contractile actomyosin flows and their hydrodynamic interactions with the fluid cytosol are presented and studied using a minimal, reconstituted system.
    1. Developmental Biology

    Distinct myocardial lineages break atrial symmetry during cardiogenesis in zebrafish

    Almary Guerra et al.
    A discovery of two previously unknown, molecularly distinct fields of cardiac progenitors in zebrafish provides evidence for cardiac laterality prior to the emergence of cardiac septation and allows novel insights into cardiac development and disease.
    1. Structural Biology and Molecular Biophysics

    Symmetry transitions during gating of the TRPV2 ion channel in lipid membranes

    Lejla Zubcevic et al.
    Ligand-induced two-fold symmetric arrangement in TRPV2 is observed in the native-like nanodisc-reconstituted condition using cryo-electron microscopy.
    1. Cell Biology

    Orderly assembly underpinning built-in asymmetry in the yeast centrosome duplication cycle requires cyclin-dependent kinase

    Marco Geymonat et al.
    The polarized orientation of the mitotic spindle in budding yeast arises from spindle pole structural and functional asymmetry subject to cell cycle control.
    1. Computational and Systems Biology

    Inherent regulatory asymmetry emanating from network architecture in a prevalent autoregulatory motif

    Md Zulfikar Ali et al.
    Network architecture and physiological features of the cell dictate asymmetric gene regulation between a negative autoregulatory TF gene and its target gene.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Symmetry broken and rebroken during the ATP hydrolysis cycle of the mitochondrial Hsp90 TRAP1

    Daniel Elnatan et al.
    A flip of the dimer asymmetry following the first ATP hydrolysis provides a mechanistic model for client remodeling by the mitochondrial Hsp90, TRAP1.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Symmetry breaking in reconstituted actin cortices

    Enas Abu Shah, Kinneret Keren
    A reconstituted system has been developed that self-organizes into dynamic actin cortices capable of spontaneous polarization, similar to the initial cortical polarization observed in cells during embryogenesis and development.
    1. Plant Biology

    Anisotropic growth is achieved through the additive mechanical effect of material anisotropy and elastic asymmetry

    Firas Bou Daher et al.
    Growing upwards in the young seedling is controlled by two cooperative mechanical mechanisms: cellulose orientation in inner tissues and differential elasticity in epidermal cells.
    1. Physics of Living Systems
    2. Cell Biology

    Dynamic curvature regulation accounts for the symmetric and asymmetric beats of Chlamydomonas flagella

    Pablo Sartori et al.
    The self-organised beat of cilia and flagella is dynamically regulated by curvature.

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