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    1. Evolutionary Biology
    2. Genetics and Genomics

    Comprehensive fitness maps of Hsp90 show widespread environmental dependence

    Julia M Flynn et al.
    Environmental conditions strongly impact the fitness effects of Hsp90, resulting in the selection of Hsp90 sequences in nature that are robust to a variety of stressful conditions.
    1. Genetics and Genomics

    Wild worm embryogenesis harbors ubiquitous polygenic modifier variation

    Annalise B Paaby et al.
    Cryptic alleles affecting embryonic development are widespread in wild C. elegans populations.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Efficient termination of nuclear lncRNA transcription promotes mitochondrial genome maintenance

    Dorine Jeanne Mariëtte du Mee et al.
    RNA Polymerase II transcriptional termination of a nuclear long non-coding RNA is required to maintain the mitochondrial genome and hence promotes budding yeast growth.
    1. Developmental Biology
    2. Neuroscience

    Neuroblast-specific open chromatin allows the temporal transcription factor, Hunchback, to bind neuroblast-specific loci

    Sonia Q Sen et al.
    Spatial factors generate neuroblast-specific open chromatin, thereby biasing the subsequent binding of transcription factors to produce neuroblast-specific neurons.
    1. Chromosomes and Gene Expression
    2. Neuroscience

    Intronic enhancer region governs transcript-specific Bdnf expression in rodent neurons

    Jürgen Tuvikene et al.
    An evolutionarily conserved neuron-specific and stimulus-dependent enhancer region downstream of the Bdnf exon III regulates the expression of Bdnf transcripts starting from the upstream 5' exons.
    1. Chromosomes and Gene Expression

    Cooperative interactions enable singular olfactory receptor expression in mouse olfactory neurons

    Kevin Monahan et al.
    Biochemical and genetic experiments show that Ebf and Lhx2 cooperate to specify olfactory receptor enhancers, which cooperate to drive olfactory receptor expression.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Bridged filaments of histone-like nucleoid structuring protein pause RNA polymerase and aid termination in bacteria

    Matthew V Kotlajich et al.
    Bridged H-NS filaments inhibit transcript elongation by bacterial RNA polymerase by enhancing backtracking and increasing Rho-dependent termination at a subset of pause sites that are normally poor Rho substrates.
    1. Chromosomes and Gene Expression

    CRISPRi is not strand-specific at all loci and redefines the transcriptional landscape

    Françoise S Howe et al.
    CRISPR interference (CRISPRi), which uses small guide RNAs to target catalytically dead Cas9 protein to chromatin, disrupts existing transcription units and generates new sites for initiation and termination of transcription on both strands of DNA.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Transcription-factor-dependent enhancer transcription defines a gene regulatory network for cardiac rhythm

    Xinan H Yang et al.
    Transcription-factor-dependent noncoding RNA transcription illuminates components of a transcription-factor-dependent gene regulatory network that includes enhancer-associated long noncoding RNAs and is necessary for cardiac rhythm.
    1. Cancer Biology
    2. Evolutionary Biology

    Pervasive duplication of tumor suppressors in Afrotherians during the evolution of large bodies and reduced cancer risk

    Juan M Vazquez, Vincent J Lynch
    Duplication of tumor suppressor genes contributed to the evolution of large, long-lived elephants.