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    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Structural determinants of voltage-gating properties in calcium channels

    Monica L Fernández-Quintero et al.
    Structure modeling, site-directed mutagenesis, and current recordings revealed the mechanism by which stabilization of voltage sensors in the resting and activated states determines the gating properties of the CaV1.1 calcium channel.
    1. Cell Biology
    2. Developmental Biology

    Mechanical force regulates tendon extracellular matrix organization and tenocyte morphogenesis through TGFbeta signaling

    Arul Subramanian et al.
    Perturbation of mechanical force at muscle attachments and its effects on tendon morphogenesis provides insights into the mechanisms underlying cellular responses to tensional force and resulting extracellular matrix production.
    1. Neuroscience

    Peripheral optogenetic stimulation induces whisker movement and sensory perception in head-fixed mice

    Sunmee Park et al.
    Light can be used to trigger the contraction of facial muscles and movement of the whiskers in transgenic mice, aiding the study of active sensation.
    1. Cell Biology

    Muscle Contraction: Too much of a good thing

    H Lee Sweeney
    A mutation that causes heart disease in humans increases the number of active myosin heads during contraction in the muscles of fruit flies, leading to the progressive dysfunction of the flight muscles and heart tube.
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    1. Computational and Systems Biology
    2. Developmental Biology

    Vascular dimorphism ensured by regulated proteoglycan dynamics favors rapid umbilical artery closure at birth

    Sumeda Nandadasa et al.
    Morphologic, molecular, biomechanical and computational analyses show that the specialized extracellular matrix architecture of the umbilical artery contributes to its rapid closure at birth and regulates smooth muscle cell differentiation.
    1. Neuroscience

    Early intrinsic hyperexcitability does not contribute to motoneuron degeneration in amyotrophic lateral sclerosis

    Félix Leroy et al.
    Contrary to a long-standing hypothesis, the neuronal death that leads to muscle wastage in amyotrophic lateral sclerosis does not result from overactivity of those neurons during development.
    1. Developmental Biology

    The Hippo pathway controls myofibril assembly and muscle fiber growth by regulating sarcomeric gene expression

    Aynur Kaya-Çopur et al.
    Muscle fiber growth during development is controlled by the Hippo pathway that links the assembly state of the contractile sarcomeres with the transcriptional state of the sarcomeric genes.
    1. Cell Biology

    KLHL41 stabilizes skeletal muscle sarcomeres by nonproteolytic ubiquitination

    Andres Ramirez-Martinez et al.
    KLHL41 acts as a poly-ubiquitin dependent chaperone that prevents the formation of pathogenic nebulin aggregates associated with muscle disease.
    1. Cell Biology

    Generation of contractile actomyosin bundles depends on mechanosensitive actin filament assembly and disassembly

    Sari Tojkander et al.
    Mechanosensitive inhibition of actin polymerization through VASP phosphorylation is required for stress fiber maturation and alignment.
    1. Cell Biology
    2. Neuroscience

    Tenectin recruits integrin to stabilize bouton architecture and regulate vesicle release at the Drosophila neuromuscular junction

    Qi Wang et al.
    Characterization of Tnc as a selective integrin ligand at the Drosophila NMJ allows for unprecedented insights into our understanding of extracellular matrix/integrin interactions at synaptic locations and reveals novel, distinct presynaptic and postsynaptic integrin functions.