269 results found
    1. Human Biology and Medicine

    Effects of myosin variants on interacting-heads motif explain distinct hypertrophic and dilated cardiomyopathy phenotypes

    Lorenzo Alamo et al.
    Mapping the locations of hypertrophic cardiomyopathy gene variants onto the three-dimensional structures of contractile proteins revealed that these disrupt protein interactions are critical for normal cardiac relaxation and efficient energy usage.
    1. Cell Biology
    2. Human Biology and Medicine

    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. Microbiology and Infectious Disease

    Single cell, super-resolution imaging reveals an acid pH-dependent conformational switch in SsrB regulates SPI-2

    Andrew Tze Fui Liew et al.
    Inside the acidic vacuole, expression, DNA binding and DNA binding affinity of the Salmonella regulator SsrB is stimulated by acid pH.
    1. Structural Biology and Molecular Biophysics

    PIE-scope, integrated cryo-correlative light and FIB/SEM microscopy

    Sergey Gorelick et al.
    The PIE-scope resolves the limitations in correlative cryo-focused ion beam milling by adding robustness and ease of use to the workflow.
    1. Neuroscience

    Olfactory connectivity mediates sleep-dependent food choices in humans

    Surabhi Bhutani et al.
    Sleep deprivation enhances energy-dense food choices and encoding of olfactory information in the human brain.
    1. Microbiology and Infectious Disease
    2. Physics of Living Systems

    Pressure-driven release of viral genome into a host nucleus is a mechanism leading to herpes infection

    Alberto Brandariz-Nuñez et al.
    Internal DNA pressure of tens of atmospheres inside a herpesvirus capsid powers ejection of the viral genome into a cell nucleus, causing infection.
    1. Cell Biology
    2. Physics of Living Systems

    Rod nuclear architecture determines contrast transmission of the retina and behavioral sensitivity in mice

    Kaushikaram Subramanian et al.
    Establishing retinal contrast transmission as a novel determinant of mammalian fitness, this research adds functional significance to a prominent exception of nuclear organization, previously described in nocturnal rod photoreceptor cells.
    1. Developmental Biology
    2. Neuroscience

    Purinergic signaling in cochlear supporting cells reduces hair cell excitability by increasing the extracellular space

    Travis A Babola et al.
    Supporting cells in the cochlea change their shape in response to purinergic receptor activation, which influences hair cell excitability by altering potassium redistribution in the extracellular space.
    1. Chromosomes and Gene Expression

    Transcription factor clusters regulate genes in eukaryotic cells

    Adam JM Wollman et al.
    Transcription factors form clusters independently of the presence of DNA, which regulate target genes as opposed to individual monomers, addressing a longstanding question of how transcription factors can find gene targets so quickly.
    1. Physics of Living Systems

    Downsizing the molecular spring of the giant protein titin reveals that skeletal muscle titin determines passive stiffness and drives longitudinal hypertrophy

    Ambjorn Brynnel et al.
    Genetically altering the size of the molecular spring element in the giant protein titin established that titin determines the stiffness of skeletal muscle and the number of sarcomeres in series.

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