59 results found
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    Structure of bacterial cytoplasmic chemoreceptor arrays and implications for chemotactic signaling

    Ariane Briegel et al.
    Bacterial cytoplasmic chemoreceptors assemble into a sandwich of two hexagonally packed arrays.
    1. Neuroscience
    2. Genetics and Genomics

    Regulatory changes in two chemoreceptor genes contribute to a Caenorhabditis elegans QTL for foraging behavior

    Joshua S Greene et al.
    A quantitative trait locus that includes two pheromone receptor genes affects foraging behavior; for one of the genes, the two alleles of the QTL have opposite effects because of distinct sites of expression.
    1. Neuroscience

    Vascular control of the CO2/H+-dependent drive to breathe

    Colin M Cleary et al.
    Understanding how loss of CO2/H+ vascular reactivity affects respiratory control may facilitate development of treatments for breathing problems in this population.
    1. Neuroscience

    Somatostatin-expressing parafacial neurons are CO2/H+ sensitive and regulate baseline breathing

    Colin M Cleary et al.
    Cellular and chemogenetic approaches identify a novel mode of chemotransduction involving regulation of basal breathing by CO2/H+-dependent disinhibition.
    1. Neuroscience

    Purinergic regulation of vascular tone in the retrotrapezoid nucleus is specialized to support the drive to breathe

    Virginia E Hawkins et al.
    CO2/H+-dependent purinergic signaling by astrocytes provides specialized control of vascular tone in a brainstem respiratory center in a manner that contributes to respiratory behavior.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Multiple sources of slow activity fluctuations in a bacterial chemosensory network

    Remy Colin et al.
    Single-cell FRET measurements reveal large temporal activity fluctuations within this signaling pathway in Escherichia coli, caused by stochasticity of receptor methylation combined with allosteric interactions and slow rearrangements within receptor clusters.
    1. Physics of Living Systems

    Sperm chemotaxis is driven by the slope of the chemoattractant concentration field

    Héctor Vicente Ramírez-Gómez et al.
    The slope of the chemoattractant concentration gradient is a driving force for sperm chemotaxis, by coordinating the entrainment of information flow between sensing, signaling and motility.
    1. Structural Biology and Molecular Biophysics
    2. Computational and Systems Biology

    CryoEM and computer simulations reveal a novel kinase conformational switch in bacterial chemotaxis signaling

    C Keith Cassidy et al.
    An atomic model of the bacterial chemosensory array obtained through the synthesis of cryo-electron tomography and large-scale molecular-dynamics simulations reveals a new kinase conformation during signaling events.
    1. Neuroscience

    C. elegans avoids toxin-producing Streptomyces using a seven transmembrane domain chemosensory receptor

    Alan Tran et al.
    Caenorhabditis elegans require a GPCR to recognize and rapidly escape from toxin-producing Streptomyces at their head or tail.
    1. Physics of Living Systems

    Ligand sensing enhances bacterial flagellar motor output via stator recruitment

    Farha Naaz et al.
    Sensing of ligands by chemoreceptors of Escherichia coli not only causes changes in the rotational bias of the flagellar motors but also increases motor speed via temporary recruitment of stators.

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