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    1. Chromosomes and Gene Expression
    2. Plant Biology

    Natural depletion of histone H1 in sex cells causes DNA demethylation, heterochromatin decondensation and transposon activation

    Shengbo He et al.
    Transposon activation during male gametogenesis is caused by interactions between DNA demethylation and linker histone H1, developmental depletion of which promotes pollen fertility.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Molecular basis for activation of lecithin:cholesterol acyltransferase by a compound that increases HDL cholesterol

    Kelly A Manthei et al.
    Structure of lecithin:cholesterol acyltransferase with a covalent acyl-intermediate mimic and a small molecule activator reveals an active conformation and that the enzyme can be activated via its membrane binding domain.
    1. Neuroscience

    Transient inhibition and long-term facilitation of locomotion by phasic optogenetic activation of serotonin neurons

    Patrícia A Correia et al.
    Phasic activation of dorsal raphe serotonin neurons transiently inhibits locomotion without influencing anxiety or producing reinforcement, but when repeated over many days a long-term facilitation of locomotion is produced.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Activation-triggered subunit exchange between CaMKII holoenzymes facilitates the spread of kinase activity

    Margaret Stratton et al.
    Activation of CaMKII holoenzymes triggers the exchange of subunits with other holoenzymes, including unactivated ones, enabling the calcium-independent phosphorylation and activation of new subunits.
    1. Developmental Biology

    The transcription factor Pou3f1 promotes neural fate commitment via activation of neural lineage genes and inhibition of external signaling pathways

    Qingqing Zhu et al.
    The transcription factor Pou3f1 triggers embryonic stem cells to become neuronal progenitor cells in two ways: by activating the expression of pro-neuronal genes and by blocking external inhibitory signaling cascades.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Selective activation of FZD7 promotes mesendodermal differentiation of human pluripotent stem cells

    Diana Gumber et al.
    Selective activation of FZD7 signaling with an engineered WNT mimetic promotes early developmental programs, including endodermal lineage specification, in human pluripotent stem cells.
    1. Genetics and Genomics
    2. Neuroscience

    Sequential perturbations to mouse corticogenesis following in utero maternal immune activation

    Cesar P Canales et al.
    Mid-gestational exposure to maternal immune activation drives a sequence of transcriptional signatures and developmental pathology in embryonic mouse cortex, culminating in altered lamination and cellular lineage specification.
    1. Cell Biology
    2. Immunology and Inflammation

    Arp2/3 complex-driven spatial patterning of the BCR enhances immune synapse formation, BCR signaling and B cell activation

    Madison Bolger-Munro et al.
    Arp2/3 complex-mediated actin polymerization shapes how B lymphocytes probe the surface of antigen-presenting cells, promotes coalescence of B cell receptor (BCR) microclusters, amplifies BCR signaling, and enhances B cell activation.
    1. Chromosomes and Gene Expression
    2. Developmental Biology

    FBXL19 recruits CDK-Mediator to CpG islands of developmental genes priming them for activation during lineage commitment

    Emilia Dimitrova et al.
    The ZF-CxxC protein FBXL19 recruits kinase-associated Mediator to CpG islands of silent developmental genes in embryonic stem cells, which primes these genes for activation during differentiation and is required for embryonic development.
    1. Structural Biology and Molecular Biophysics

    Structural basis of Ca2+-dependent activation and lipid transport by a TMEM16 scramblase

    Maria E Falzone et al.
    Structures of a TMEM16 phospholipid scramblase reveal that its Ca2+-dependent activation entails global conformational changes and how these rearrangements affect the membrane to enable transbilayer lipid transfer.