86 results found
    1. Structural Biology and Molecular Biophysics

    Helix breaking transition in the S4 of HCN channel is critical for hyperpolarization-dependent gating

    Marina A Kasimova, Debanjan Tewari ... Baron Chanda
    The gating polarity of a voltage-gated ion channel is primarily determined by turn propensity of residues at a critical position in the middle of the S4 voltage-sensing helix.
    1. Neuroscience

    Enhanced functional detection of synaptic calcium-permeable AMPA receptors using intracellular NASPM

    Ian Coombs, Cécile Bats ... Mark Farrant
    Intracellular NASPM, unlike the widely used spermine, fully blocks outward currents through calcium-permeable AMPA-type glutamate receptors, enabling an improved functional readout for this physiologically important receptor subtype in neurons.
    1. Structural Biology and Molecular Biophysics

    Calcium-dependent electrostatic control of anion access to the pore of the calcium-activated chloride channel TMEM16A

    Andy KM Lam, Raimund Dutzler
    Ion conduction in the calcium-activated chloride channel TMEM16A is directly regulated by calcium, which binds to a site close to the pore thereby shaping the electrostatics at its intracellular entrance.
    1. Neuroscience

    Shallow neural networks trained to detect collisions recover features of visual loom-selective neurons

    Baohua Zhou, Zifan Li ... Damon A Clark
    When artificial networks modeled on a Drosophila neuron are tasked with discriminating objects on collision course from other visual scenes, their optimized solutions reproduce many functional features of the original loom-selective neuron.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Atypical calcium regulation of the PKD2-L1 polycystin ion channel

    Paul G DeCaen, Xiaowen Liu ... David E Clapham
    Outward calcium ion currents desensitize the human PKD2-L1 ion channel via a mechanism that is independent of cytosolic motifs.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    CryoEM structures of the human CLC-2 voltage-gated chloride channel reveal a ball-and-chain gating mechanism

    Mengyuan Xu, Torben Neelands ... Merritt Maduke
    A combination of high-resolution structure determination, electrophysiology, and MD simulations reveal fundamental insight into the molecular function of voltage-gated chloride channels.
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structures and functional characterization of murine Slc26a9 reveal mechanism of uncoupled chloride transport

    Justin D Walter, Marta Sawicka, Raimund Dutzler
    The cryo-EM structure and functional characterization of the chloride-selective ion transporter Slc26a9 defines its oligomeric architecture and transport mechanism.
    1. Cell Biology

    TRPV4 is the temperature-sensitive ion channel of human sperm

    Nadine Mundt, Marc Spehr, Polina V Lishko
    The molecular identity of the temperature-sensitive ion channel of human sperm that ensures depolarization is TRPV4.
    1. Neuroscience

    eIF2α-mediated translational control regulates the persistence of cocaine-induced LTP in midbrain dopamine neurons

    Andon N Placzek, Gonzalo Viana Di Prisco ... Mauro Costa-Mattioli
    Building on previous work (Huang et al., 2016), we show that translational control by p-eIF2α is a defense mechanism that prevents persistent cocaine-induced synaptic synaptic potentiation underlying compulsive drug seeking.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    The dual role of chloride in synaptic vesicle glutamate transport

    Roger Chang, Jacob Eriksen, Robert H Edwards
    Whole endosome recording shows that chloride interacts with vesicular glutamate transporters as both allosteric activator and permeant ion, and although the mode of permeation differs, chloride and glutamate use a related conduction pathway.

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