42 results found
    1. Structural Biology and Molecular Biophysics

    A calcium transport mechanism for atrial fibrillation in Tbx5-mutant mice

    Wenli Dai et al.
    TBX5-loss associated cardiomyocyte ectopy and atrial fibrillation is prevented by augmentation of SERCA2 activity, establishing a mechanism underlying the genetic basis for a Ca2+-dependent pathway for AF risk.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    Self-restoration of cardiac excitation rhythm by anti-arrhythmic ion channel gating

    Rupamanjari Majumder et al.
    Customization of ion channel gating enhances homeostatic regulation through automatic detection and correction of abnormal physiological changes, as illustrated by self-restoration of excitation rhythm in cardiac arrhythmias.
    1. Cell Biology
    2. Developmental Biology

    Mitochondrial Ca2+ uptake by the voltage-dependent anion channel 2 regulates cardiac rhythmicity

    Hirohito Shimizu et al.
    Enhancing mitochondrial Ca2+ uptake effectively suppresses aberrant Ca2+ induced arrhythmogenic events in zebrafish, mouse and human cardiomyocytes, demonstrating a critical role for mitochondria in the regulation of cardiac rhythmicity.
    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. Computational and Systems Biology
    2. Neuroscience

    A model for focal seizure onset, propagation, evolution, and progression

    Jyun-you Liou et al.
    Usage-dependent inhibition breakdown and neural adaptation underpins the key spatiotemporal dynamics of human focal seizures.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Stabilization and structural analysis of a membrane-associated hIAPP aggregation intermediate

    Diana C Rodriguez Camargo et al.
    The ability of lipid nanodiscs to trap different types of amyloid intermediates, as successfully demonstrated in this study for human-IAPP, could become one of the most powerful approaches to dissect the complicated misfolding pathways of protein aggregation.
    1. Developmental Biology

    Calcium handling precedes cardiac differentiation to initiate the first heartbeat

    Richard CV Tyser et al.
    High-resolution live imaging reveals how and when the mouse heart first starts to beat during development and how the onset of beating impacts on heart muscle cell maturation and heart formation.
    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. 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. Neuroscience

    A dystonia-like movement disorder with brain and spinal neuronal defects is caused by mutation of the mouse laminin β1 subunit, Lamb1

    Yi Bessie Liu et al.
    A mouse with a defined mutation in an extracellular matrix protein that is expressed in selected neurons sheds light on circuit abnormalities producing transient hyperkinetic movements.

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