3,371 results found
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    The His-Gly motif of acid-sensing ion channels resides in a reentrant ‘loop’ implicated in gating and ion selectivity

    Nate Yoder, Eric Gouaux
    The amino terminus of acid-sensing ion channel 1a forms a reentrant 'loop' that frames the lower pore and harbors a conserved 'His-Gly' motif implicated in gating and ion selectivity mechanisms.
    1. Structural Biology and Molecular Biophysics

    Structural insights into human acid-sensing ion channel 1a inhibition by snake toxin mambalgin1

    Demeng Sun et al.
    Mambalgin1 binds to the thumb domain of human ASIC1a channel and inhibits the channel through hindering the proton-induced transitions from the resting closed state to the active and/or desensitized state.
    1. Neuroscience

    β11-12 linker isomerization governs acid-sensing ion channel desensitization and recovery

    Matthew L Rook et al.
    The rotation of the β11-12 linker is a crucial control point for acid-sensing ion channel gating and motion of this linker is required for the channel to desensitize.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    A selectivity filter at the intracellular end of the acid-sensing ion channel pore

    Timothy Lynagh et al.
    Sodium selectivity of acid-sensing ion channels is mediated by negatively charged side chains and not by a size-exclusion mechanism.
    1. Structural Biology and Molecular Biophysics

    Tarantula toxins use common surfaces for interacting with Kv and ASIC ion channels

    Kanchan Gupta et al.
    The tarantula toxins psalmotoxin and guangxitoxin have a similar concave surface for interacting with α-helices in voltage-gated and acid-sensing ion channels.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Topography and motion of acid-sensing ion channel intracellular domains

    Tyler Couch et al.
    The cytosolic elements of the acid-sensing ion channel move toward the plasma membrane when the channel is exposed to acidic conditions.
    1. Neuroscience

    A valve-like mechanism controls desensitization of functional mammalian isoforms of acid-sensing ion channels

    Yangyu Wu et al.
    Three residues work together as a valve-like mechanism to control desensitization from pre-open and open states in the ion channels ASIC1a, ASIC2a, and ASIC3.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Control of Slc7a5 sensitivity by the voltage-sensing domain of Kv1 channels

    Shawn M Lamothe et al.
    The voltage-sensing mechanism of a subfamily of potassium channels is modulated in unconventional ways by an amino acid transporter.
    1. Cell Biology
    2. Neuroscience

    Tissue acidosis induces neuronal necroptosis via ASIC1a channel independent of its ionic conduction

    Yi-Zhi Wang et al.
    An interaction between the ion channel ASIC1a and the protein RIP1 is responsible for neuronal death caused by tissue acidosis.
    1. Structural Biology and Molecular Biophysics
    2. Biochemistry and Chemical Biology

    Structural mechanism of ligand activation in human calcium-sensing receptor

    Yong Geng et al.
    L-amino acids are agonists of calcium-sensing receptor, and act jointly with calcium and phosphate ions to control receptor function.

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