29 results found
    1. Structural Biology and Molecular Biophysics

    Polyunsaturated fatty acid analogues differentially affect cardiac NaV, CaV, and KV channels through unique mechanisms

    Briana M Bohannon et al.
    Polyunsaturated fatty acid analogues show selectivity for different cardiac ion channels, suggesting their potential use for the treatment of different subtypes of Long QT Syndrome.
    1. Structural Biology and Molecular Biophysics

    ML277 specifically enhances the fully activated open state of KCNQ1 by modulating VSD-pore coupling

    Panpan Hou et al.
    ML277 exclusively enhances the AO state voltage-sensing domain (VSD)-pore coupling of KCNQ1 channels, providing an effective tool to investigate the voltge-dependent gating and new strategies for treating long QT syndrome.
    1. Structural Biology and Molecular Biophysics

    Allosteric mechanism for KCNE1 modulation of KCNQ1 potassium channel activation

    Georg Kuenze et al.
    An integrative structural biology approach provides refined models of the KCNQ1-KCNE1 channel complex, which propose a new mechanism to explain how KCNE1 modulates KCNQ1 channel activation.
    1. Structural Biology and Molecular Biophysics

    Fatty acid analogue N-arachidonoyl taurine restores function of IKs channels with diverse long QT mutations

    Sara I Liin et al.
    Fatty acid analogues are interesting prototype compounds that may inspire the development of future IKs channel activators to treat patients with long QT syndrome caused by diverse arrhythmia-causing mutations in the IKs channel.
    1. Stem Cells and Regenerative Medicine

    Stem Cells: Put to the test

    Marites T Woon, Timothy J Kamp
    Personalized heart muscle cells made from stem cells in the laboratory could be used to check an individual’s response to potential new drugs before clinical trials.
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    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The GIRK1 subunit potentiates G protein activation of cardiac GIRK1/4 hetero-tetramers

    Kouki K Touhara et al.
    The GIRK1 subunit contains a defective Na+-binding site but behaves as if it is permanently bound to a sodium ion, and therefore increases the affinity of Gβγ to GIRK1/4 hetero-tetrameric channels in lipid membranes.
    1. Structural Biology and Molecular Biophysics

    KCNE1 tunes the sensitivity of KV7.1 to polyunsaturated fatty acids by moving turret residues close to the binding site

    Johan E Larsson et al.
    An auxiliary subunit alters the effect of a family of small-molecule openers on a voltage-gated potassium channel by inducing structural re-arrangements that promote protonation of the drug molecule.
    1. Structural Biology and Molecular Biophysics

    Binary architecture of the Nav1.2-β2 signaling complex

    Samir Das et al.
    X-ray crystallography reveals new conceptual insights into the location of the β2-subunit in the Nav channel signaling complex.
    1. Neuroscience

    Inducible and reversible phenotypes in a novel mouse model of Friedreich’s Ataxia

    Vijayendran Chandran et al.
    Restoration of endogenous frataxin levels reverses neurologic and cardiac phenotypes associated with Friedreich's ataxia in adult mice even after significant motor dysfunction.
    1. Evolutionary Biology

    A generally conserved response to hypoxia in iPSC-derived cardiomyocytes from humans and chimpanzees

    Michelle C Ward, Yoav Gilad
    Evolutionarily conserved hypoxic stress response genes are depleted for association with expression quantitative trait loci.

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