1,478 results found
    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

    Organelle calcium-derived voltage oscillations in pacemaker neurons drive the motor program for food-seeking behavior in Aplysia

    Alexis Bédécarrats, Laura Puygrenier ... Romuald Nargeot
    An atypical neuronal pacemaker mechanism triggers feeding motor pattern in Aplysia..
    1. Structural Biology and Molecular Biophysics

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

    Yenisleidy Lorenzo-Ceballos, Willy Carrasquel-Ursulaez ... Ramon Latorre
    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
    2. Structural Biology and Molecular Biophysics

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

    Shawn M Lamothe, Nazlee Sharmin ... Harley T Kurata
    The voltage-sensing mechanism of a subfamily of potassium channels is modulated in unconventional ways by an amino acid transporter.
    1. Structural Biology and Molecular Biophysics

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

    Kanchan Gupta, Maryam Zamanian ... Kenton J Swartz
    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

    Structural determinants of voltage-gating properties in calcium channels

    Monica L Fernández-Quintero, Yousra El Ghaleb ... Bernhard E Flucher
    Structure modeling, site-directed mutagenesis, and current recordings revealed the mechanism by which stabilization of voltage sensors in the resting and activated states determines the gating properties of the CaV1.1 calcium channel.
    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, Marina A Kasimova ... Jianmin Cui
    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. Structural Biology and Molecular Biophysics

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

    Akira Kawanabe, Masaki Hashimoto ... Yasushi Okamura
    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, Suvendu Lomash ... Kenton Jon Swartz
    Transmembrane protein 266 contains a functional S1-S4 voltage-sensing domain that is regulated by extracellular Zn2+ ions.
    1. Structural Biology and Molecular Biophysics

    Folding of prestin’s anion-binding site and the mechanism of outer hair cell electromotility

    Xiaoxuan Lin, Patrick R Haller ... Tobin R Sosnick
    Identification of Cl-induced folding advances the field’s understanding of prestin’s unique voltage-sensing mechanism and its involvement in mammalian hearing sensation.

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