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    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    The interplay of RNA:DNA hybrid structure and G-quadruplexes determines the outcome of R-loop-replisome collisions

    Charanya Kumar et al.
    Reconstitution of orientation-specific R-loop-replisome collisions with purified proteins reveals the differential impact of R-loop-associated RNA:DNA hybrids and G-quadruplexes on replication fork progression.
    1. Chromosomes and Gene Expression

    Identification of protein-protected mRNA fragments and structured excised intron RNAs in human plasma by TGIRT-seq peak calling

    Jun Yao et al.
    Human plasma contains protein-protected mRNA fragments, myriad repeat RNAs, and novel intron RNAs, including a family of structured full-length excised introns, some corresponding to mirtron pre-miRNAs and agotrons.
    1. Biochemistry and Chemical Biology

    Tetramerisation of the CRISPR ring nuclease Crn3/Csx3 facilitates cyclic oligoadenylate cleavage

    Januka S Athukoralage et al.
    A widespread ribonuclease is a CRISPR-associated ring nuclease with a highly unusual cooperative mechanism involving tetramerisation of the enzyme.
    1. Evolutionary Biology
    2. Neuroscience

    True S-cones are concentrated in the ventral mouse retina and wired for color detection in the upper visual field

    Francisco M Nadal-Nicolás et al.
    Unique 'true' S-cone and S-cone bipolar cell distribution patterns in the mouse retina are previously unappreciated anatomical features that support enhanced short-wavelength signaling for color detection above horizon.
    1. Chromosomes and Gene Expression

    GC content shapes mRNA storage and decay in human cells

    Maïté Courel et al.
    The GC content of human mRNAs is key to P-body localization and protein yield, and has a major impact on their post-transcriptional control.
    1. Chromosomes and Gene Expression

    Distinct ‘safe zones’ at the nuclear envelope ensure robust replication of heterochromatic chromosome regions

    Hani Ebrahimi et al.
    The nuclear periphery houses compositionally and functionally distinct domains, one of which provides a 'safe zone' for replication and reassembly of heterochromatic genome regions.
    1. Chromosomes and Gene Expression

    Condensin controls cellular RNA levels through the accurate segregation of chromosomes instead of directly regulating transcription

    Clémence Hocquet et al.
    Contrary to the generally accepted model, condensin maintains proper gene expression by promoting the accurate segregation of chromosomes and the partitioning of the RNA-exosome throughout mitosis, instead of directly regulating transcription.
    1. Neuroscience

    mTORC1 is necessary but mTORC2 and GSK3β are inhibitory for AKT3-induced axon regeneration in the central nervous system

    Linqing Miao et al.
    The kinase AKT acts as a nodal point that coordinates both positive and negative cues to regulate the regeneration of central nervous system axons in adult mice.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Cytoplasmic mRNA decay represses RNA polymerase II transcription during early apoptosis

    Christopher Duncan-Lewis et al.
    Human cells respond to cytoplasmic mRNA depletion during early apoptosis by inhibiting RNA polymerase II transcription, thereby magnifying the gene expression shutdown during stress.
    1. Immunology and Inflammation

    Tissue environment, not ontogeny, defines murine intestinal intraepithelial T lymphocytes

    Alejandro J Brenes et al.
    In-depth proteomic analyses of intestinal tissue-resident intraepithelial T lymphocytes reveals how these cells are adapted to the intestinal environment through increased cholesterol and lipid metabolism, tailored metabolic profiles, receptors for interacting with epithelial cells, and tightly regulated signalling pathways.