590 results found
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Reconstitution of bacterial autotransporter assembly using purified components

    Giselle Roman-Hernandez et al.
    A complex that catalyzes the membrane integration of β barrel proteins and a molecular chaperone promote the complete assembly of a bacterial virulence factor in vitro.
    1. Neuroscience

    Dendritic small conductance calcium-activated potassium channels activated by action potentials suppress EPSPs and gate spike-timing dependent synaptic plasticity

    Scott L Jones et al.
    The activation of small-conductance calcium-activated potassium channels in spines by action potentials regulates the induction of spike-timing dependent synaptic plasticity during low-frequency single action potential–EPSP pairing.
    1. Neuroscience

    High-frequency stimulation-induced peptide release synchronizes arcuate kisspeptin neurons and excites GnRH neurons

    Jian Qiu et al.
    Kisspeptin neurons in the hypothalamus release peptide and amino acid neurotransmitters that work together to coordinate the activity of gonadotropin-releasing hormone neurons and subsequent release of reproductive hormones.
    1. Neuroscience

    AMPA receptor mediated synaptic excitation drives state-dependent bursting in Purkinje neurons of zebrafish larvae

    Mohini Sengupta, Vatsala Thirumalai
    In vivo recordings in unanesthetized zebrafish larvae show that Purkinje neurons have two stable membrane potential states and that climbing fiber inputs can toggle them to up states during motor episodes.
    1. Neuroscience

    The presynaptic ribbon maintains vesicle populations at the hair cell afferent fiber synapse

    Lars Becker et al.
    The auditory hair cell synaptic ribbon maintains vesicle pools near release sites in order to support sustained and timed vesicle release.
    1. Physics of Living Systems

    A multiphase theory for spreading microbial swarms and films

    Siddarth Srinivasan et al.
    A multiphase hydrodynamic theory reveals that the dynamics of colony expansion in microbial swarms and biofilms are limited by the constraints of water and nutrient availability.
    1. Neuroscience

    Thalamocortical synapses in the cat visual system in vivo are weak and unreliable

    Madineh Sedigh-Sarvestani et al.
    A characterization of LGN-V1 synaptic transmission properties demonstrates thalamocortical synapses in vivo are weak and unreliable, but biologically constrained models show they efficiently drive cortex.
    1. Neuroscience

    Serotonin enhances excitability and gamma frequency temporal integration in mouse prefrontal fast-spiking interneurons

    Jegath C Athilingam et al.
    Serotonin changes passive membrane properties in prefrontal fast-spiking interneurons to affect not only neuronal excitability but also the temporal filtering of synaptic inputs with a preference for gamma-frequency summation.
    1. Evolutionary Biology
    2. Plant Biology

    Independent evolution of ancestral and novel defenses in a genus of toxic plants (Erysimum, Brassicaceae)

    Tobias Züst et al.
    A gain-of-function in a new chemical defense resulted in no trade-offs and and independent evolution between novel and ancestral defenses, suggesting low redundancy among different defensive chemicals.
    1. Neuroscience

    Dendritic NMDA receptors in parvalbumin neurons enable strong and stable neuronal assemblies

    Jonathan H Cornford et al.
    NMDA receptors on PV+ interneurons mediate supralinear integration at feedback synapses from local pyramidal neurons, enabling competing networks to ‘lock’ onto salient inputs.

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