4,728 results found
    1. Developmental Biology

    Specialized impulse conduction pathway in the alligator heart

    Bjarke Jensen et al.
    A specialized conduction pathway for the electrical impulse in the heart, previously thought to be associated with the endothermic mammals and birds only, is also present in the ectothermic crocodiles.
    1. Neuroscience

    Ionic mechanisms underlying history-dependence of conduction delay in an unmyelinated axon

    Yang Zhang et al.
    Conduction velocity of action potentials in unmyelinated axons depends ultimately on the gating variables of the fast voltage-gated sodium current and can be predicted from the action potential peak and trough voltages.
    1. Cell Biology
    2. Human Biology and Medicine

    BHLHE40, a third transcription factor required for insulin induction of SREBP-1c mRNA in rodent liver

    Jing Tian et al.
    Biochemical and genetic studies reveal a third transcription factor, BHLHE40, that together with LXR and C/EBPβ mediates insulin induction of SREBP-1c, which in turn leads to triglyceride accumulation in liver.
    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

    Cryo-EM structures and functional characterization of the murine lipid scramblase TMEM16F

    Carolina Alvadia et al.
    While activated by a common mechanism, both functions in TMEM16F - lipid scrambling and ion conduction - are likely mediated by alternate protein conformations that are at equilibrium in the ligand-bound state.
    1. Computational and Systems Biology
    2. Neuroscience

    Fast and flexible sequence induction in spiking neural networks via rapid excitability changes

    Rich Pang, Adrienne L Fairhall
    Biologically plausible changes in the excitabilities of single neurons may suffice to selectively modulate sequential network dynamics, without modifying of recurrent connectivity.
    1. Structural Biology and Molecular Biophysics

    Structural basis for anion conduction in the calcium-activated chloride channel TMEM16A

    Cristina Paulino et al.
    Single-particle cryo-EM and electrophysiology studies of the chloride channel TMEM16A reveals the structural basis for anion conduction and uncover its relationship to lipid scramblases of the same family.
    1. Immunology and Inflammation

    Endothelial cell-derived CD95 ligand serves as a chemokine in induction of neutrophil slow rolling and adhesion

    Liang Gao et al.
    The cell surface protein CD95 mediates neutrophil slow rolling and adhesion during inflammation.
    1. Neuroscience

    Steroid hormone induction of temporal gene expression in Drosophila brain neuroblasts generates neuronal and glial diversity

    Mubarak Hussain Syed et al.
    A steroid hormone acts directly on brain neural progenitors to coordinately alter gene expression and specify neuronal and glial cell types.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Arf1/COPI machinery acts directly on lipid droplets and enables their connection to the ER for protein targeting

    Florian Wilfling et al.
    The targeting of proteins from the endoplasmic reticulum to lipid droplets relies on surface modulation of the lipid droplet by the Arf1/COPI machinery.

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