1,676 results found
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Structure of a pore-blocking toxin in complex with a eukaryotic voltage-dependent K+ channel

    Anirban Banerjee et al.
    Charybdotoxin, a toxin produced by scorpions, blocks a K+ channel by binding in a lock-and-key fashion to the mouth of the channel and presenting a lysine amino group, which serves as a K+ mimic in the selectivity filter.
    1. Structural Biology and Molecular Biophysics

    Domain–domain interactions determine the gating, permeation, pharmacology, and subunit modulation of the IKs ion channel

    Mark A Zaydman et al.
    Contrary to a generally accepted principle, the pore properties of KCNQ1 channels depend on the states of voltage-sensing domains activation; KCNE1 alters the voltage-sensing domains-pore coupling to modulate KCNQ1 channel properties.
    1. Neuroscience

    Agonist-specific voltage-dependent gating of lysosomal two-pore Na+ channels

    Xiaoli Zhang et al.
    Tricyclic antidepressants activate lysosomal two-pore Na+ channels in a voltage-dependent manner.
    1. Structural Biology and Molecular Biophysics

    The molecular basis for an allosteric inhibition of K+-flux gating in K2P channels

    Susanne Rinné et al.
    A combined systematic alanine scanning and molecular modelling approach reveals the molecular basis for an allosteric inhibition mechanism of K+-flux gating in K2P channels.
    1. Neuroscience

    NG2 glial cells integrate synaptic input in global and dendritic calcium signals

    Wenjing Sun et al.
    NG2 glial cells respond to synaptic input with calcium signals in the absence of action potentials and process synaptic depolarizations with somatic and dendritic voltage gated channels.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Regulation of Eag1 gating by its intracellular domains

    Jonathan R Whicher, Roderick MacKinnon
    Interactions between the voltage sensor and intracellular domains modulate voltage-dependent gating and calmodulin inhibition in the voltage-gated potassium channel Eag1.
    1. Structural Biology and Molecular Biophysics

    Calcium-driven regulation of voltage-sensing domains in BK channels

    Yenisleidy Lorenzo-Ceballos et al.
    Gating currents analysis at different Ca2+ concentrations of BK channels reveals a strong allosteric coupling between Ca2+- and voltage-sensing modules via equivalent contributions exerted by the RCK1 and RCK2 Ca2+-sites.
    1. Neuroscience

    Ionic mechanisms underlying history-dependence of conduction delay in an unmyelinated axon

    Yang Zhang et al.
    Conduction velocity of action potentials in unmyelinated axons depends ultimately on the gating variables of the fast voltage-gated sodium current and can be predicted from the action potential peak and trough voltages.
    1. Cell Biology
    2. Computational and Systems Biology

    Development, calibration, and validation of a novel human ventricular myocyte model in health, disease, and drug block

    Jakub Tomek et al.
    A computer model of human cardiomyocyte was produced and validated on independent datasets, overcoming shortcomings of its predecessors, also yielding broadly relevant insights and results on major ionic currents.
    1. Neuroscience

    IK1 channels do not contribute to the slow afterhyperpolarization in pyramidal neurons

    Kang Wang et al.
    The slow afterhyperpolarization that follows a burst of action potentials is a powerful regulator of neuronal excitability and is not due to IK1 (KCNN4), a member of the SK channel family.

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