751 results found
    1. Neuroscience

    Optical electrophysiology for probing function and pharmacology of voltage-gated ion channels

    Hongkang Zhang et al.
    Optogenetic tools enable sophisticated measurements of a voltage-gated sodium channel implicated in pain, as well as high-throughput screening of candidate channel blockers.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Auxiliary subunits keep AMPA receptors compact during activation and desensitization

    Jelena Baranovic, Andrew JR Plested
    The auxiliary protein Stargazin limits the conformational dynamics of AMPA-type glutamate receptors in cell membranes, as revealed by 'molecular rulers' deployed on the seconds to milliseconds timescale.
    1. Neuroscience

    Robust perisomatic GABAergic self-innervation inhibits basket cells in the human and mouse supragranular neocortex

    Viktor Szegedi et al.
    Abundant self-inhibitory synapses in the layer 2/3 of human neocortex strongly regulate the function of basket cells.
    1. Neuroscience

    Optical dopamine monitoring with dLight1 reveals mesolimbic phenotypes in a mouse model of neurofibromatosis type 1

    J Elliott Robinson et al.
    Heterozygous Nf1 knockout mice exhibit distinct dopaminergic phenotypes in vivo, as revealed by the genetically encoded dopamine sensor dLight1, patch clamp electrophysiology, optogenetics, and novel viral tools for morphological analysis.
    1. Neuroscience
    2. Physics of Living Systems

    Arterial smooth muscle cell PKD2 (TRPP1) channels regulate systemic blood pressure

    Simon Bulley et al.
    Arterial myocyte PKD2 channels are activated by vasoconstrictor stimuli, which increases blood pressure, are upregulated during hypertension and cell-specific knockout in vivo reduces both physiological blood pressure and hypertension.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    The Cryo-EM structure of pannexin 1 reveals unique motifs for ion selection and inhibition

    Kevin Michalski et al.
    The structure of a pannexin 1 uncovers the extracellular loops of pannexin 1 as important structural motifs for ion selectivity and channel inhibition.
    1. Structural Biology and Molecular Biophysics

    Mechanism of pharmacochaperoning in a mammalian KATP channel revealed by cryo-EM

    Gregory M Martin et al.
    Diverse KATP channel inhibitors occupy a common binding pocket and stabilize an interaction between Kir6.2 and SUR1 to allosterically control gating and promote the assembly and trafficking of nascent channels.
    1. Structural Biology and Molecular Biophysics

    Patient-specific mutations impair BESTROPHIN1’s essential role in mediating Ca2+-dependent Cl- currents in human RPE

    Yao Li et al.
    A multidisciplinary platform featured by patient-derived RPEs is established to study the disease-causing mechanisms of BEST1 mutations, and demonstrates gene-supplemented rescue of the mutation-caused deficiency in Ca2+-dependent Cl- current in human RPE.
    1. Computational and Systems Biology
    2. Structural Biology and Molecular Biophysics

    The push-to-open mechanism of the tethered mechanosensitive ion channel NompC

    Yang Wang et al.
    A pushing force on the ankyrin repeat region of NompC leads to the gating of the mechanosensitive ion channel, which may enable cells to feel compression and shrinkage.
    1. Structural Biology and Molecular Biophysics

    Structure and physiological function of the human KCNQ1 channel voltage sensor intermediate state

    Keenan C Taylor et al.
    The intermediate state conformation of the human KCNQ1 potassium channel voltage sensor domain was determined, validated, and shown to be conductive under physiological conditions.

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