506 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. Cancer Biology
    2. Cell Biology

    AMP-activated protein kinase fortifies epithelial tight junctions during energetic stress via its effector GIV/Girdin

    Nicolas Aznar et al.
    An effector of AMPK is essential for the kinase and its pharmacological activators, including Metformin, to strengthen cell-cell junctions and preserve epithelial cell polarity and barrier functions in the face of energetic stress, as well as to suppress oncogenesis.
    1. Evolutionary Biology

    Membranes, energetics, and evolution across the prokaryote-eukaryote divide

    Michael Lynch, Georgi K Marinov
    The common view that the mitochondrion endowed eukaryotes with a boost in bioenergetic capacity above that in prokaryotes is inconsistent with a diversity of cellular features.
    1. Computational and Systems Biology
    2. Structural Biology and Molecular Biophysics

    Energetics and conformational pathways of functional rotation in the multidrug transporter AcrB

    Yasuhiro Matsunaga et al.
    High-performance computing simulations reveal how two remote sites in the multidrug transporter AcrB work together for drug extrusion using the proton-motive force.
    1. Structural Biology and Molecular Biophysics

    Mutational scanning reveals the determinants of protein insertion and association energetics in the plasma membrane

    Assaf Elazar et al.
    Deep sequencing analysis quantifies the hydrophobicity of the plasma membrane and provides restraints for structure modeling of receptor homodimers to atomic precision.
    1. Physics of Living Systems

    Measuring cis-regulatory energetics in living cells using allelic manifolds

    Talitha L Forcier et al.
    A novel strategy is presented for quantitatively measuring protein-DNA and protein-protein interactions that regulate transcription in living cells.
    1. Structural Biology and Molecular Biophysics

    Structural basis for SARM1 inhibition and activation under energetic stress

    Michael Sporny et al.
    Cryo-EM shows that the NADase activity of SARM1 is allosterically inhibited by physiological concentrations of NAD+ that stabilizes an auto-inhibited conformation of SARM1, explaining how NAD+ depletion may inflict neurodegeneration.
    1. Ecology

    Cyclic bouts of extreme bradycardia counteract the high metabolism of frugivorous bats

    M Teague O'Mara et al.
    Novel heart rate strategies that minimize energy expenditure during the day are necessary to cope with high energy nocturnal lifestyles of tent-making bats.
    1. Biochemistry and Chemical Biology

    Imaging and energetics of single SSB-ssDNA molecules reveal intramolecular condensation and insight into RecOR function

    Jason C Bell et al.
    Individual SSB-ssDNA complexes undergo reversible condensation and de-condensation that is modulated by RecOR during recombination.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Molecular determinants of large cargo transport into the nucleus

    Giulia Paci et al.
    Efficient nuclear transport of very large biomolecules, relevant for viral transport, scales non-linearly with size and its kinetics can be explained by a simple two-parameter energetic model.

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