5,868 results found
    1. Cell Biology

    Apolipoprotein L-1 renal risk variants form active channels at the plasma membrane driving cytotoxicity

    Joseph A Giovinazzo et al.
    Cytotoxicity associated with APOL1 renal-risk variants occurs through its plasma-membrane localization, where aberrant channel activity drives a sustained sodium and calcium influx leading to cell swelling and eventually cell death.
    1. Structural Biology and Molecular Biophysics

    Structural insights into the mechanism of activation of the TRPV1 channel by a membrane-bound tarantula toxin

    Chanhyung Bae et al.
    The structure of a bivalent double-knot tarantula toxin bound to the outer pore of the capsaicin receptor reveals a novel mode of toxin-channel recognition that has important implications for thermosensation.
    1. Physics of Living Systems
    2. Neuroscience

    Mechanical sensitivity of Piezo1 ion channels can be tuned by cellular membrane tension

    Amanda H Lewis, Jörg Grandl
    Tension is the activating stimulus of Piezo1 mechanosensitive ion channels and resting membrane tension modulates overall channel sensitivity to mechanical stimulation.
    1. Neuroscience

    Clusters of cooperative ion channels enable a membrane-potential-based mechanism for short-term memory

    Paul Pfeiffer et al.
    Independently gating ion channels typically act fast within milliseconds, but cooperative interactions within a cluster of channels allow for a memory of previous electrical activity for several seconds.
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structures of S-OPA1 reveal its interactions with membrane and changes upon nucleotide binding

    Danyang Zhang et al.
    GTP binding induces rearrangement of S-OPA1 assembly on membrane and thus triggers membrane remodeling with reduced curvature.
    1. Structural Biology and Molecular Biophysics

    Aromatic interactions with membrane modulate human BK channel activation

    Mahdieh Yazdani et al.
    Computation and experiment together demonstrate that nonspecific membrane–protein interactions could regulate transmembrane protein function and suggest that covalent linkers can be an integral component of the sensing apparatus.
    1. Immunology and Inflammation
    2. Structural Biology and Molecular Biophysics

    FcγRIIB-I232T polymorphic change allosterically suppresses ligand binding

    Wei Hu et al.
    A single-nucleotide I232T polymorphic change in FcγRIIB's transmembrane domain bends FcγRIIB's ectodomains toward cell membrane to allosterically hinder FcγRIIB's ligand association, providing novel molecular mechanism for functional loss of FcγRIIB-I232T.
    1. Cell Biology
    2. Neuroscience

    Activity and Ca2+ regulate the mobility of TRPV1 channels in the plasma membrane of sensory neurons

    Eric N Senning, Sharona E Gordon
    Channel activity is a novel regulatory mechanism for channel mobility in the plasma membrane.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Protein translocation channel of mitochondrial inner membrane and matrix-exposed import motor communicate via two-domain coupling protein

    Rupa Banerjee et al.
    Two domains of the peripheral membrane protein Tim44 interact with two different sectors of a translocase to coordinate the translocation of proteins across the inner mitochondrial membrane.
    1. Neuroscience

    Membrane palmitoylated protein 2 is a synaptic scaffold protein required for synaptic SK2-containing channel function

    Gukhan Kim et al.
    A new synaptic scaffold important for neurotransmission and synaptic plasticity has been identified.

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