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    1. Biochemistry and Chemical Biology
    2. Cell Biology

    MicroRNA-mediated repression of nonsense mRNAs

    Ya Zhao et al.
    microRNAs can serve as a surveillance system to repress nonsense mRNAs by recognizing miRNA-responsive elements in the open reading frame region downstream of the premature termination codon.
    1. Evolutionary Biology

    Splicing repression allows the gradual emergence of new Alu-exons in primate evolution

    Jan Attig et al.
    During evolutionary progression of Alu-exons, repressive U-tracts buffer sudden gains in 3' splice site strength and prevent inclusion of cryptic exons.
    1. Cancer Biology

    The origins and consequences of UPF1 variants in pancreatic adenosquamous carcinoma

    Jacob T Polaski et al.
    UPF1 mutations were reportedly present at high frequencies in a cohort of pancreatic adenosquamous carcinoma patients, but these lesions are unlikely to be functional drivers of this cancer subtype.
    1. Structural Biology and Molecular Biophysics

    Structure of substrate-bound SMG1-8-9 kinase complex reveals molecular basis for phosphorylation specificity

    Lukas M Langer et al.
    First structural view of a substrate-bound PIKK (PI3K-related-kinase) by cryo-EM explains phosphorylation specificity toward a short amino-acid motif shared across the PIKK family and rationalizes PIKK auto-inhibition by regulatory domain.
    1. Genetics and Genomics

    Quantitative proteomics reveals key roles for post-transcriptional gene regulation in the molecular pathology of facioscapulohumeral muscular dystrophy

    Sujatha Jagannathan et al.
    The myopathic transcription factor DUX4 induces discordant dysregulation of transcript and protein levels, demonstrating a key role for post-transcriptional gene regulation in facioscapulohumeral muscular dystrophy.
    1. Chromosomes and Gene Expression
    2. Stem Cells and Regenerative Medicine

    SRSF3 promotes pluripotency through Nanog mRNA export and coordination of the pluripotency gene expression program

    Madara Ratnadiwakara et al.
    RNA-binding protein SRSF3 mediates critical changes in RNA processing of pluripotency genes, which reveals functional consequences of regulated RNA processing during stem cell self-renewal and early development.
    1. Cell Biology
    2. Neuroscience

    TDP-43 maximizes nerve conduction velocity by repressing a cryptic exon for paranodal junction assembly in Schwann cells

    Kae-Jiun Chang et al.
    Glial TDP-43 regulates splicing and expression of neurofascin and is required for proper assembly and maintenance of paranodal axoglial junctions.
    1. Chromosomes and Gene Expression

    The RNA helicase UPF1 associates with mRNAs co-transcriptionally and is required for the release of mRNAs from gene loci

    Anand K Singh et al.
    UPF1 associates with nascent transcripts and plays a broad role in nuclear processes of gene expression.
    1. Chromosomes and Gene Expression

    Inhibition of post-termination ribosome recycling at premature termination codons in UPF1 ATPase mutants

    Lucas D Serdar et al.
    Nucleotide resolution mapping of ribosome-bound RNA decay fragments in yeast cells expressing ATPase-deficient UPF1 reveals 3' UTR bound ribosomes and a role for UPF1 in post-termination ribosome recycling.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Universally high transcript error rates in bacteria

    Weiyi Li, Michael Lynch
    Fundamental details of the rate and molecular spectrum of transcript errors were revealed in four bacterial species, providing novel insights into transcriptional fidelity and RNA quality-control in prokaryotes.