551 results found
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    Ion counting demonstrates a high electrostatic field generated by the nucleosome

    Magdalena Gebala et al.
    First experimental studies on the ion atmosphere around a nucleosome provide a quantitative analysis of the molecule's electrostatic properties.
    1. Structural Biology and Molecular Biophysics

    Calcium-dependent electrostatic control of anion access to the pore of the calcium-activated chloride channel TMEM16A

    Andy KM Lam, Raimund Dutzler
    Ion conduction in the calcium-activated chloride channel TMEM16A is directly regulated by calcium, which binds to a site close to the pore thereby shaping the electrostatics at its intracellular entrance.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Electrostatic anchoring precedes stable membrane attachment of SNAP25/SNAP23 to the plasma membrane

    Pascal Weber et al.
    A step of contact establishment preceding stable membrane attachment by palmitoylation is identified.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Electrostatic lateral interactions drive ESCRT-III heteropolymer assembly

    Sudeep Banjade et al.
    ESCRT-III heteropolymers utilize non-specific lateral electrostatic interactions to recognize one another, which may enable the polymers to slide along one another and adapt to different curvatures.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Dynamic change of electrostatic field in TMEM16F permeation pathway shifts its ion selectivity

    Wenlei Ye et al.
    TMEM16F shifts its ion selectivity in response to change of intracellular Ca2+, membrane potential and ionic strength.
    1. Immunology and Inflammation
    2. Structural Biology and Molecular Biophysics

    An electrostatic selection mechanism controls sequential kinase signaling downstream of the T cell receptor

    Neel H Shah et al.
    A high-throughput technique to characterize the substrate specificities of tyrosine kinases identifies the key features of kinases and substrates that enforce accurate signaling from T cell receptors.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Membrane characteristics tune activities of endosomal and autophagic human VPS34 complexes

    Yohei Ohashi et al.
    The lipid kinase VPS34 complexes I and II are both activated by unsaturation of substrate and non-substrate lipids, curvature, electrostatics and polyphosphoinositides, which play roles in localisation and cellular function.
    1. Structural Biology and Molecular Biophysics

    Changes in the free-energy landscape of p38α MAP kinase through its canonical activation and binding events as studied by enhanced molecular dynamics simulations

    Antonija Kuzmanic et al.
    Extensive molecular dynamics simulations enhanced by advanced sampling techniques give a detailed view of p38α canonical activation mechanism, which reveals novel key electrostatic interactions that are put in context of existing experimental data.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Re-examining how complexin inhibits neurotransmitter release

    Thorsten Trimbuch et al.
    Challenging a widespread model, biophysical and electrophysiological experiments suggest a new mechanism whereby complexins inhibit neurotransmitter release through electrostatic repulsion between their accessory helix and the membranes.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structures in multiple conformations reveal distinct transition metal and proton pathways in an Nramp transporter

    Aaron T Bozzi et al.
    Nramp-family transporters adapt a common fold to a novel mechanism in which the spatial and temporal separation of like-charge transition metal and proton co-substrates circumvents the expected electrostatic repulsion.

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