12 results found
    1. Structural Biology and Molecular Biophysics

    Hexameric helicase G40P unwinds DNA in single base pair steps

    Michael Schlierf et al.
    Single-molecule FRET experiments reveal that G40P, a DnaB-like helicase, unwinds double-stranded DNA in single base pair steps and its processivity is enhanced by host primase DnaG.
    1. Neuroscience

    Rap2 and TNIK control Plexin-dependent tiled synaptic innervation in C. elegans

    Xi Chen et al.
    Plexin controls the spatial distribution of synapses by locally inhibiting Rap2 small GTPase activity along the axon, and a Rap2 effector, TNIK, which also plays a key role in inhibiting synapse number.
    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. Neuroscience

    Interactions between Dpr11 and DIP-γ control selection of amacrine neurons in Drosophila color vision circuits

    Kaushiki P Menon et al.
    The survival of Drosophila amacrine neurons is controlled by neurotrophic signaling mediated by interactions between the cell surface protein DIP-γ and its partner Dpr11, which is expressed on presynaptic photoreceptors.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    ULK3 regulates cytokinetic abscission by phosphorylating ESCRT-III proteins

    Anna Caballe et al.
    ULK3 is a kinase in the abscission checkpoint that temporarily inactivates ESCRT-III proteins via phosphorylation, which is required to delay cytokinesis in response to defects in mitosis.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Mechanisms of opening and closing of the bacterial replicative helicase

    Jillian Chase et al.
    Analysis of the Escherichia coli DnaB helicase•bacteriophage λ helicase loader (λP) complex provides insights into helicase opening, delivery to the origin and ssDNA entry, and closing in preparation for translocation.
    1. Neuroscience

    The functional organization of descending sensory-motor pathways in Drosophila

    Shigehiro Namiki et al.
    Systematic analysis of descending neuron anatomy reveals the basic functional map of descending sensory-motor pathways in flies and provides genetic tools for targeted interrogation of neural circuits.
    1. Cancer Biology
    2. Human Biology and Medicine

    Renal medullary carcinomas depend upon SMARCB1 loss and are sensitive to proteasome inhibition

    Andrew L Hong et al.
    Faithful models of RMC require SMARCB1 loss for survival, and genetic and small-molecule screens identify inhibition of the ubiquitin-proteasome system (UPS) as a potential therapeutic approach for SMARCB1 deficient cancers.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Coupling of remote alternating-access transport mechanisms for protons and substrates in the multidrug efflux pump AcrB

    Thomas Eicher et al.
    A transport mechanism is uncovered in the major drug-efflux system in E. coli involving two remote alternating-access conformational cycles, which could provide the basis for the development of allosteric inhibitors against multidrug resistance.
    1. Neuroscience

    Structured inhibitory activity dynamics in new virtual environments

    Moises Arriaga, Edward B Han
    Inhibitory interneuron activity is dynamically modulated in new environments while individual interneurons show consistent levels of activity modulation across multiple environments, suggesting functional specialization of inhibitory subnetworks.

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