2,278 results found
    1. Human Biology and Medicine

    Ankyrin-G mediates targeting of both Na+ and KATP channels to the rat cardiac intercalated disc

    Hua-Qian Yang et al.
    The functional interaction of Na+ and KATP channels at the intercalated disk of cardiomyocytes depends on Ankyrin G and is clinically relevant since KATP channel mutations affect Na+ channel expression.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Anti-diabetic drug binding site in a mammalian KATP channel revealed by Cryo-EM

    Gregory M Martin et al.
    A structure of a pancreatic ATP-sensitive potassium channel complex at 3.63Å resolution obtained by cryo-electron microscopy reveals how a commonly used anti-diabetic drug interacts with and inhibits the channel to stimulate insulin secretion.
    1. Structural Biology and Molecular Biophysics

    Molecular mechanisms of human P2X3 receptor channel activation and modulation by divalent cation bound ATP

    Mufeng Li et al.
    Structural, computational and functional approaches reveal the role of an extended acidic chamber near the nucleotide binding site in activation of P2X3 receptor channels by divalent-bound ATP.
    1. Structural Biology and Molecular Biophysics

    Mechanism of pharmacochaperoning in a mammalian KATP channel revealed by cryo-EM

    Gregory M Martin et al.
    Diverse KATP channel inhibitors occupy a common binding pocket and stabilize an interaction between Kir6.2 and SUR1 to allosterically control gating and promote the assembly and trafficking of nascent channels.
    1. Neuroscience

    BAD and KATP channels regulate neuron excitability and epileptiform activity

    Juan Ramón Martínez-François et al.
    Altered activity of ATP-sensitive K+ channels underlies the metabolic seizure resistance produced by genetic manipulation of the BAD protein in mice.
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structure of the ATP-sensitive potassium channel illuminates mechanisms of assembly and gating

    Gregory M Martin et al.
    Single-particle cryo-electron microscopy reveals the first subnanometer structure of ATP-sensitive potassium (KATP) channels, which provides insight into the structural mechanisms of channel assembly and gating.
    1. Structural Biology and Molecular Biophysics

    Nucleotide inhibition of the pancreatic ATP-sensitive K+ channel explored with patch-clamp fluorometry

    Samuel G Usher et al.
    Simultaneous measurements of ligand binding and channel currents are used to understand gating of the ATP-sensitive K+ channel.
    1. Structural Biology and Molecular Biophysics

    Activation mechanism of ATP-sensitive K+ channels explored with real-time nucleotide binding

    Michael Puljung et al.
    A combined FRET- and electrophysiology-based approach is used to study ATP/ADP ADP binding to the stimulatory nucleotide binding site of ATP-sensitive K+ channels and investigate their activation mechanism.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Photo-switchable tweezers illuminate pore-opening motions of an ATP-gated P2X ion channel

    Chloé Habermacher et al.
    The gating mechanism of trimeric ATP-gated P2X receptors has been explored using photo-switchable cross-linkers, via a versatile strategy that could be applied to other membrane proteins.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Ion Channels: Taking a close look at a large-pore channel

    Pablo S Gaete, Jorge E Contreras
    The structure of pannexin 1, a channel protein with a large pore, has been determined for the first time.
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