1,541 results found
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structure of the KvAP channel reveals a non-domain-swapped voltage sensor topology

    Xiao Tao, Roderick MacKinnon
    The structure of KvAP addresses a mechanism of voltage-dependent gating that has been debated for 16 years.
    1. Structural Biology and Molecular Biophysics

    Proton currents constrain structural models of voltage sensor activation

    Aaron L Randolph et al.
    Electrophysiological and computational techniques provide a structural basis for understanding the conformational changes that are required to activate Hv1 proton channels.
    1. Structural Biology and Molecular Biophysics

    Phosphatidic acid modulation of Kv channel voltage sensor function

    Richard K Hite et al.
    Phosphatidic acid influences the gating of voltage-gated K+ channels through a non-specific surface charge mechanism and through a specific interaction between a voltage sensor arginine and the primary phosphate head group on the cytoplasmic membrane leaflet.
    1. Structural Biology and Molecular Biophysics

    Structure and physiological function of the human KCNQ1 channel voltage sensor intermediate state

    Keenan C Taylor et al.
    The intermediate state conformation of the human KCNQ1 potassium channel voltage sensor domain was determined, validated, and shown to be conductive under physiological conditions.
    1. Structural Biology and Molecular Biophysics

    Voltage-dependent dynamics of the BK channel cytosolic gating ring are coupled to the membrane-embedded voltage sensor

    Pablo Miranda et al.
    Allosteric modulation of BK channels, vital for the physiology of nerve, muscle and endocrine cells, is determined by direct coupling between gating ring RCK1 domains and the voltage sensor function.
    1. Structural Biology and Molecular Biophysics

    The hydrophobic nature of a novel membrane interface regulates the enzyme activity of a voltage-sensing phosphatase

    Akira Kawanabe et al.
    Electrophysiological and fluorometric studies of Ci-VSP expressed in Xenopus oocyte revealed two states of the enzyme region with distinct enzyme activity and distinct coupling to the voltage sensor.
    1. Structural Biology and Molecular Biophysics

    TMEM266 is a functional voltage sensor regulated by extracellular Zn2+

    Ferenc Papp et al.
    Transmembrane protein 266 contains a functional S1-S4 voltage-sensing domain that is regulated by extracellular Zn2+ ions.
    1. Structural Biology and Molecular Biophysics

    The isolated voltage sensing domain of the Shaker potassium channel forms a voltage-gated cation channel

    Juan Zhao, Rikard Blunck
    Expression of the isolated voltage sensing domain significantly alters its structural conformation as well as its gating kinetics, indicating the importance of studying the biological assembly in its entirety.
    1. Neuroscience

    A double-sided microscope to realize whole-ganglion imaging of membrane potential in the medicinal leech

    Yusuke Tomina, Daniel A Wagenaar
    For the first time, action potentials and subthreshold postsynaptic potentials of almost all individual identifiable neurons within a functional unit of the leech nervous system were simultaneously imaged during sensory processing and behavioral generation.
    1. Structural Biology and Molecular Biophysics

    High temperature sensitivity is intrinsic to voltage-gated potassium channels

    Fan Yang, Jie Zheng
    Highly temperature-sensitive behavior of voltage-gated potassium channels provides a mechanistic model for how heat-activated TRP channels serve as temperature and pain sensors.

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