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. Structural Biology and Molecular Biophysics

    The mechanism of MICU-dependent gating of the mitochondrial Ca2+uniporter

    Vivek Garg, Junji Suzuki ... Yuriy Kirichok
    A comprehensive functional analysis of mitochondrial Ca2+ uniporter (MCU) demonstrates that the auxiliary MICU subunits potentiate Ca2+ transport via MCU.

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