113 results found
    1. Physics of Living Systems

    Energetic and physical limitations on the breaching performance of large whales

    Paolo S Segre et al.
    Muscle power-generating capabilities, and not energetic limitations, limit the breaching abilities of the largest whales.
    1. Evolutionary Biology

    Convergent changes in muscle metabolism depend on duration of high-altitude ancestry across Andean waterfowl

    Neal J Dawson et al.
    Changes in pathways of lipid oxidation, glycolysis, and mitochondrial oxidative phosphorylation are common strategies to cope with high-altitude hypoxia, but some changes require longer evolutionary time to arise.
    1. Physics of Living Systems

    Animal Behavior: Whale breaching says it loud and clear

    Alexander J Werth, Charles L Lemon
    A whale leaping above the surface expends an enormous amount of energy, displaying its health and strength to peers and potential mates.
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    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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Conformational distributions of isolated myosin motor domains encode their mechanochemical properties

    Justin R Porter et al.
    Shifts in the balance between nucleotide-favorable and nucleotide-unfavorable conformations of myosin motors encode duty ratios and ADP release rates, demonstrating the power of an ensemble perspective for uncovering sequence-function relationships.
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structures and functional properties of CALHM channels of the human placenta

    Katarzyna Drożdżyk et al.
    Members of the calcium homeostasis modulator family expressed in the placenta form large channels with unknown activation properties that harbor a lipid bilayer on the inside of a cylindrical pore.
    1. Genetics and Genomics
    2. Neuroscience

    A single-cell transcriptomic atlas of the adult Drosophila ventral nerve cord

    Aaron M Allen et al.
    A single-cell atlas of the adult fly VNC charts the types and properties of cells for future studies of brain development and function.
    1. Structural Biology and Molecular Biophysics

    Structural basis of mitochondrial translation

    Shintaro Aibara et al.
    Structural analysis of translating human mitoribosome illustrates elemental steps of translation in mitochondria.
    1. Microbiology and Infectious Disease

    Membrane voltage dysregulation driven by metabolic dysfunction underlies bactericidal activity of aminoglycosides

    Giancarlo Noe Bruni, Joel M Kralj
    Aminoglycosides are a class of antibiotics that can kill Escherichia coli by building up internal voltage through disrupting the normal consumption of ATP.
    1. Medicine

    Late-life restoration of mitochondrial function reverses cardiac dysfunction in old mice

    Ying Ann Chiao et al.
    Mitochondrial-targeted SS-31 peptide ameliorates mitochondrial dysfunction and rescues pre-existing cardiac dysfunction in old mice, supporting the translational potential of mitochondrial protective interventions to treat age-related diseases.

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