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    1. Neuroscience

    MEF2C regulates cortical inhibitory and excitatory synapses and behaviors relevant to neurodevelopmental disorders

    Adam J Harrington et al.
    Mice that lack the autism- and schizophrenia-linked gene MEF2C in cortical neurons have an imbalance of excitatory and inhibitory synapses, and impaired social and cognitive abilities.
    1. Neuroscience

    Constitutive activation of kappa opioid receptors at ventral tegmental area inhibitory synapses following acute stress

    Abigail M Polter et al.
    Rats exposed to a single stressful event experience days-long constitutive activation of the kappa opioid receptor at inhibitory synapses in part of the brain’s reward system, which increases their drug-seeking behavior.
    1. Neuroscience

    Poor coherence in older people's speech is explained by impaired semantic and executive processes

    Paul Hoffman et al.
    Remaining focused on the topic at hand when speaking depends on effective selection of task-relevant semantic knowledge, and declines in this ability account for increases in off-topic speech in older people.
    1. Biochemistry and Chemical Biology

    Poly(ADP-ribose) polymerase 1 searches DNA via a ‘monkey bar’ mechanism

    Johannes Rudolph et al.
    By moving between DNA segments like a child swinging on monkey bars, poly(ADP-ribose) polymerase 1 explores possible DNA damage sites more effectively.
    1. Computational and Systems Biology
    2. Structural Biology and Molecular Biophysics

    Free-energy simulations reveal molecular mechanism for functional switch of a DNA helicase

    Wen Ma et al.
    Integration of structural bioinformatics and free-energy simulations reveals how a helicase switches its function from unwinding to rezipping DNA, during which a key metastable conformation is predicted and verified by single-molecule measurements.
    1. Chromosomes and Gene Expression

    H3.3K27M mutant proteins reprogram epigenome by sequestering the PRC2 complex to poised enhancers

    Dong Fang et al.
    Redistribution of the PRC2 complex in H3.3K27M mutant cells to poised enhancers contributes to the global reduction of H3K27me3 in cells expressing the mutant proteins.
    1. Developmental Biology
    2. Neuroscience

    Directional selectivity of afferent neurons in zebrafish neuromasts is regulated by Emx2 in presynaptic hair cells

    Young Rae Ji et al.
    Emx2 mediates the directional selectivity of neuromasts by regulating hair bundle orientation in hair cells, and by selecting afferent neuronal targets.
    1. Neuroscience

    Doc2B acts as a calcium sensor for vesicle priming requiring synaptotagmin-1, Munc13-2 and SNAREs

    Sébastien Houy et al.
    Doc2B functions in two distinct vesicle priming steps; membrane localization occludes upstream Ca2+-dependent priming, whereas Ca2+-binding and interaction with synaptotagmin-1, SNAREs, and Munc13-2 are involved in downstream priming, which makes vesicles readily releasable.
    1. Chromosomes and Gene Expression
    2. Human Biology and Medicine

    Mutations in L-type amino acid transporter-2 support SLC7A8 as a novel gene involved in age-related hearing loss

    Meritxell Espino Guarch et al.
    SLC7A8 a neutral amino acid transporter has a key role in the maintenance of hearing during aging and its absence causes early onset of hearing loss.
    1. Developmental Biology

    Glucose inhibits cardiac muscle maturation through nucleotide biosynthesis

    Haruko Nakano et al.
    During cardiogenesis, the major role of glucose is not the catabolic extraction of energy but the anabolic biosynthesis of nucleotides.