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    1. Cell Biology

    H+- and Na+- elicited rapid changes of the microtubule cytoskeleton in the biflagellated green alga Chlamydomonas

    Yi Liu et al.
    Acidification and salt, which are two major stresses caused by environmental changes, swiftly and drastically alter the microtubule system in green algae and likely many other organisms.
    1. Neuroscience

    FGF14 modulates resurgent sodium current in mouse cerebellar Purkinje neurons

    Haidun Yan et al.
    The N-terminus of the FGF14b isoform promotes the inactivation of voltage-gated Na+ channels to regulate the resurgent Na+ channel current needed for high frequency action potentials.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Quantitative analysis of mammalian GIRK2 channel regulation by G proteins, the signaling lipid PIP2 and Na+ in a reconstituted system

    Weiwei Wang et al.
    The G protein subunits Gβγ and the signaling lipid PIP2 are simultaneously needed to activate the potassium ion channel GIRK2 to control the voltage across a lipid bilayer, while sodium ions modulate these molecules' effects.
    1. Neuroscience

    Optical electrophysiology for probing function and pharmacology of voltage-gated ion channels

    Hongkang Zhang et al.
    Optogenetic tools enable sophisticated measurements of a voltage-gated sodium channel implicated in pain, as well as high-throughput screening of candidate channel blockers.
    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. Cell Biology

    Profound regulation of Na/K pump activity by transient elevations of cytoplasmic calcium in murine cardiac myocytes

    Fang-Min Lu et al.
    Transient Ca elevations of cytoplasmic calcium in cardiac myocytes profoundly activate cardiac Na/K pump activity in parallel with physical-chemical changes of the sarcolemma but without involvement of conventional signaling mechanisms.
    1. Immunology and Inflammation

    ENaC-mediated sodium influx exacerbates NLRP3-dependent inflammation in cystic fibrosis

    Thomas Scambler et al.
    Dysfunction and overexpression of ENaC-mediated sodium influx exacerbates activation of NLRP3-inflammasome mediated inflammation in cells with CF-associated mutations and is modulated by inhibition of these amiloride-sensitive sodium (Na+) channels.
    1. Medicine
    2. Neuroscience

    Aberrant subchondral osteoblastic metabolism modifies NaV1.8 for osteoarthritis

    Jianxi Zhu et al.
    Osteoblastic PGE2 induces pain and OA progression by NaV1.8 modification and serves as a potential target multiple skeletal pain and degenerations.
    1. Structural Biology and Molecular Biophysics

    Molecular principles of assembly, activation, and inhibition in epithelial sodium channel

    Sigrid Noreng et al.
    The in-depth structural and functional work provide a deeper understanding as to how the epithelial sodium channel is a heteromeric ion channel that is regulated by Na+ and proteolysis.
    1. Cell Biology

    TRPV4 is the temperature-sensitive ion channel of human sperm

    Nadine Mundt et al.
    The molecular identity of the temperature-sensitive ion channel of human sperm that ensures depolarization is TRPV4.