335 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Hydrogen bonds as molecular timers for slow inactivation in voltage-gated potassium channels

    Stephan A Pless et al.
    Tuning the strength of inter- and intra-subunit hydrogen bonds can control potassium flux across biological membranes.
    1. Structural Biology and Molecular Biophysics

    Phosphatidic acid modulation of Kv channel voltage sensor function

    Richard K Hite et al.
    Phosphatidic acid influences the gating of voltage-gated K+ channels through a non-specific surface charge mechanism and through a specific interaction between a voltage sensor arginine and the primary phosphate head group on the cytoplasmic membrane leaflet.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Sculpting ion channel functional expression with engineered ubiquitin ligases

    Scott A Kanner et al.
    Engineered E3 ubiquitin ligases are utilized to elucidate mechanisms underlying ubiquitin regulation of membrane proteins, and to achieve robust post-translational functional knockdown of ion channels.
    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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Regulation of Eag1 gating by its intracellular domains

    Jonathan R Whicher, Roderick MacKinnon
    Interactions between the voltage sensor and intracellular domains modulate voltage-dependent gating and calmodulin inhibition in the voltage-gated potassium channel Eag1.
    1. Structural Biology and Molecular Biophysics

    Allosteric mechanism for KCNE1 modulation of KCNQ1 potassium channel activation

    Georg Kuenze et al.
    An integrative structural biology approach provides refined models of the KCNQ1-KCNE1 channel complex, which propose a new mechanism to explain how KCNE1 modulates KCNQ1 channel activation.
    1. Neuroscience

    Chronic postnatal chemogenetic activation of forebrain excitatory neurons evokes persistent changes in mood behavior

    Sthitapranjya Pati et al.
    Enhanced Gq-signaling-mediated activation of forebrain excitatory neurons in postnatal life programs enhanced anxiety-, despair- and schizophrenia-like behavior, recapitulating key aspects of the behavioral consequences of early life adversity.
    1. Neuroscience

    The effects of chloride dynamics on substantia nigra pars reticulata responses to pallidal and striatal inputs

    Ryan S Phillips et al.
    The effects of chloride homeostasis can explain diverse responses of basal ganglia output neurons to putatively inhibitory inputs and may tune these neurons' synchrony, oscillations and behavior in decision-making scenarios.
    1. Neuroscience

    Functional clustering of dendritic activity during decision-making

    Aaron Kerlin et al.
    In motor cortex pyramidal neurons, diverse task-related signals are distributed throughout the dendritic arbor and compartmentalized by dendritic distance and branching.
    1. Neuroscience

    Gradients in the biophysical properties of neonatal auditory neurons align with synaptic contact position and the intensity coding map of inner hair cells

    Alexander L Markowitz, Radha Kalluri
    The biophysical diversity that is intrinsic to spiral ganglion neurons emerges as spatial gradients during early post-natal development and endures through subsequent maturation to likely contribute to sound intensity coding.

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