29 results found
    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. Medicine

    Concentration-dependent mortality of chloroquine in overdose

    James A Watson et al.
    Most chloroquine regimens trialled for the treatment of COVID19 will not result in life-threatening cardiovascular toxicity.
    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

    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. Cell Biology

    Cardiac mitochondrial function depends on BUD23 mediated ribosome programming

    Matthew Baxter et al.
    BUD23 links ribosome function with mitochondrial protein expression and efficient oxidative phosphorylation by promoting selective mRNA translation and is therefore critical to mouse development and postnatal cardiac function.
    1. 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. Cell Biology
    2. Structural Biology and Molecular Biophysics

    A microtranslatome coordinately regulates sodium and potassium currents in the human heart

    Catherine A Eichel et al.
    Association of mRNA in discrete, cotranslational complexes regulates currents controlling excitability in human cardiomyocytes.
    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. 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.
    1. Cell Biology

    The adhesion function of the sodium channel beta subunit (β1) contributes to cardiac action potential propagation

    Rengasayee Veeraraghavan et al.
    Structural and functional investigations identify a structural unit for ephaptic coupling in the heart, and provide the mechanistic basis for a novel strategy for the treatment of arrhythmias.

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