23 results found
    1. Cell Biology
    2. Developmental Biology

    Reduced matrix rigidity promotes neonatal cardiomyocyte dedifferentiation, proliferation and clonal expansion

    Yfat Yahalom-Ronen et al.
    Compliant matrix provides a permissive micoenvironment for cardiomyocyte dedifferentiation, cell division and expansion, and thus may open a new avenue towards cardiac regeneration.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Small molecule-mediated refolding and activation of myosin motor function

    Michael B Radke et al.
    The small molecule EMD 57033 is one of a new class of pharmacological chaperones that stabilize, enhance the activity of, and correct stress-induced misfolding of myosin proteins.
    1. Developmental Biology
    2. Evolutionary Biology

    The evolutionary origin of bilaterian smooth and striated myocytes

    Thibaut Brunet et al.
    Molecular profiling of annelid myocytes reveals that the last common protostome-deuterostome ancestor already possessed a dual musculature, with visceral smooth muscles ensuring digestion and somatic striated muscles ensuring locomotion.
    1. Cell Biology

    The step-wise pathway of septin hetero-octamer assembly in budding yeast

    Andrew Weems, Michael McMurray
    In budding yeast cells, slow monomeric septin GTPase activity and the cytosolic GTP:GDP ratio dictate the relative incorporation of alternative subunits during septin hetero-oligomer assembly, which proceeds by discrete, ordered steps dependent on allostery between interaction interfaces.
    1. Developmental Biology

    Calcium handling precedes cardiac differentiation to initiate the first heartbeat

    Richard CV Tyser et al.
    High-resolution live imaging reveals how and when the mouse heart first starts to beat during development and how the onset of beating impacts on heart muscle cell maturation and heart formation.
    1. Evolutionary Biology
    2. Neuroscience

    Physiological constraint on acrobatic courtship behavior underlies rapid sympatric speciation in bearded manakins

    Meredith C Miles et al.
    Skeletal muscle performance sets the course of rapid speciation by defining the evolutionary trajectory of reproductive behavior.
    1. Ecology

    Ant colonies maintain social homeostasis in the face of decreased density

    Andreas P Modlmeier et al.
    Organizational resilience allows ant colonies to retain high interaction rates in the face of decreased density by altering their spatial and social dynamics.
    1. Cell Biology

    The DWORF micropeptide enhances contractility and prevents heart failure in a mouse model of dilated cardiomyopathy

    Catherine A Makarewich et al.
    Cardiac-specific overexpression of a recently discovered micropeptide, DWORF, enhances calcium cycling and contractility in the heart and rescues the heart failure phenotype of a genetic mouse model of dilated cardiomyopathy.
    1. Ecology
    2. Neuroscience

    Select forelimb muscles have evolved superfast contractile speed to support acrobatic social displays

    Matthew J Fuxjager et al.
    In situ measurements of muscular twitch speed reveal one of the fastest vertebrate limb muscles on record, which evolved in association with extravagant courtship displays that include rapid limb movements.
    1. Cell Biology
    2. Developmental Biology

    The Drosophila formin Fhos is a primary mediator of sarcomeric thin-filament array assembly

    Arkadi Shwartz et al.
    Actin is incorporated into the thin-filament arrays of skeletal muscle sarcomeres in discrete steps, and Fhos, the Drosophila homolog of FHOD-family formins, is an essential player in the process.

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