1,100 results found
    1. Cell Biology

    A novel biosensor to study cAMP dynamics in cilia and flagella

    Shatanik Mukherjee et al.
    A new FRET-based cAMP biosensor with nanomolar sensitivity makes it possible to measure cAMP dynamics in miniscule subcellular compartments like cilia and flagella.
    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 the E. coli replicative DNA polymerase reveal its dynamic interactions with the DNA sliding clamp, exonuclease and τ

    Rafael Fernandez-Leiro et al.
    Structures of the replicative DNA polymerase Pol IIIα, the DNA sliding clamp, the proofreading exonuclease, and the processivity switch Tau (τ) suggest a mechanism for quick release during lagging strand synthesis.
    1. Neuroscience

    Hidden synaptic differences in a neural circuit underlie differential behavioral susceptibility to a neural injury

    Akira Sakurai et al.
    Animal-to-animal variability in neural circuit elements is often hidden under normal conditions, but becomes functionally relevant when the system is challenged by injury.
    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

    Fusion pore regulation by cAMP/Epac2 controls cargo release during insulin exocytosis

    Alenka Guček et al.
    Live cell imaging shows that the cAMP-sensor Epac2, a target of major antidiabetic drugs, is central to fusion pore control during insulin granule exocytosis.
    1. Computational and Systems Biology
    2. Neuroscience

    Nonlinearities between inhibition and T-type calcium channel activity bidirectionally regulate thalamic oscillations

    Adam C Lu et al.
    A multi-scale integration of experimental and computational approaches shows how a non-linear dependence of T-type calcium channel gating on GABAB receptor activity regulates thalamic network oscillations.
    1. Neuroscience

    Criticality and degeneracy in injury-induced changes in primary afferent excitability and the implications for neuropathic pain

    Stéphanie Ratté et al.
    No single molecular change is uniquely necessary to cause neuropathic changes in primary afferent excitability; multiple different changes are sufficient.
    1. Computational and Systems Biology
    2. Neuroscience

    Sodium channels implement a molecular leaky integrator that detects action potentials and regulates neuronal firing

    Marco A Navarro et al.
    Kinetic interactions between sodium channels and auxiliary factors create a molecular computational engine that can sense and regulate cellular excitability.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Intrinsic disorder within an AKAP-protein kinase A complex guides local substrate phosphorylation

    F Donelson Smith et al.
    Structural analysis of an AKAP18-protein kinase A complex reveals that regions of intrinsic disorder impact the phosphorylation of preferred substrates.

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