104 results found
    1. Structural Biology and Molecular Biophysics

    Ligand discrimination and gating in cyclic nucleotide-gated ion channels from apo and partial agonist-bound cryo-EM structures

    Jan Rheinberger, Xiaolong Gao ... Crina M Nimigean
    High resolution SthK channel cryo-EM structures in different ligand-bound states combined with single-channel functional data in the same conditions constrain a gating mechanism for CNG channels.
    1. Structural Biology and Molecular Biophysics

    Ligand-coupled conformational changes in a cyclic nucleotide-gated ion channel revealed by time-resolved transition metal ion FRET

    Pierce Eggan, Sharona E Gordon, William N Zagotta
    Time-resolved tmFRET revealed structural and energetic changes induced by ligand binding with full agonist cAMP and partial agonist cGMP in the cyclic nucleotide-binding domain of the bacterial ion channel SthK.
    1. Evolutionary Biology
    2. Neuroscience

    CNGA3 acts as a cold sensor in hypothalamic neurons

    Viktor V Feketa, Yury A Nikolaev ... Elena O Gracheva
    CNGA3 is a cold-potentiated ion channel that confers cold sensitivity to mouse hypothalamic neurons, whereas CNGA3 from hibernating ground squirrels is cold-insensitive.
    1. Structural Biology and Molecular Biophysics

    Interplay between VSD, pore, and membrane lipids in electromechanical coupling in HCN channels

    Ahmad Elbahnsi, John Cowgill ... Lucie Delemotte
    The HCN1 channel gates thanks to a coupling mechanism involving the reorganization of the interfaces between the voltage-sensor domains and pore helices, subtly shifting the balance between hydrophobic and hydrophilic interactions in a 'domino effect'.
    1. Neuroscience

    HCN2 channels in the ventral tegmental area regulate behavioral responses to chronic stress

    Peng Zhong, Casey R Vickstrom ... Qing-song Liu
    HCN2 channels in the ventral tegmental area play an important role in the pathophysiology of chronic mild stress-induced behavioral deficits.
    1. Neuroscience

    Drosophila HCN mediates gustatory homeostasis by preserving sensillar transepithelial potential in sweet environments

    MinHyuk Lee, Se Hoon Park ... KyeongJin Kang
    A hyperpolarization-activated cation channel, counteracting membrane depolarization, delimits the excitability of receptor neurons subjected to naturally prolonged stimulation to preserve the function of neighboring receptor neurons in Drosophila gustation.
    1. Neuroscience

    Magnetosensitive neurons mediate geomagnetic orientation in Caenorhabditis elegans

    Andrés Vidal-Gadea, Kristi Ward ... Jonathan Pierce-Shimomura
    With the aid of a pair of sensory neurons, the nematode worm C. elegans is able to detect the Earth's magnetic field and use it to navigate towards food sources.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Molecular mechanism of voltage-dependent potentiation of KCNH potassium channels

    Gucan Dai, William N Zagotta
    A powerful new fluorescence approach elucidates the structural mechanism for a specialized ion channel behavior important for cardiac and neuronal excitability.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    A K+-selective CNG channel orchestrates Ca2+ signalling in zebrafish sperm

    Sylvia Fechner, Luis Alvarez ... U Benjamin Kaupp
    Zebrafish sperm display an unusual pathway for Ca2+ signalling.
    1. Microbiology and Infectious Disease
    2. Neuroscience

    Thioredoxin shapes the C. elegans sensory response to Pseudomonas produced nitric oxide

    Yingsong Hao, Wenxing Yang ... Joshua M Kaplan
    C. elegans utilizes bacterially produced nitric oxide as a sensory cue to elicit avoidance of pathogenic bacteria.

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