535 results found
    1. Evolutionary Biology
    2. Genetics and Genomics

    Evolutionary dynamics of circular RNAs in primates

    Gabriela Santos-Rodriguez et al.
    An analysis of the genomic features that distinguish conserved from species-specific circular RNAs reveals that the expansion of the downstream intron by insertion of retrotransposons stabilizes circular RNAs' production across 30+ millions years of evolution.
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    Inducible and reversible inhibition of miRNA-mediated gene repression in vivo

    Gaspare La Rocca et al.
    A new genetically engineered mouse strain is described in which miRNA activity can be acutely and reversibly inhibited, showing that in a subset of adult tissues miRNA activity is dispensable under homeostatic conditions but becomes essential during tissue regeneration.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Comparison of transcriptional initiation by RNA polymerase II across eukaryotic species

    Natalia Petrenko, Kevin Struhl
    Although the preinitiation complex for transcriptional initiation by RNA polymerase II contains highly conserved general transcription factors, there are kinetic and compositional differences in the initiation process among eukaryotic species.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    Structure and dynamics of the chromatin remodeler ALC1 bound to a PARylated nucleosome

    Luka Bacic et al.
    Analysis of conformational heterogeneity in cryo-EM data by a recently developed deep learning method reveals the structure and dynamics of the oncogenic chromatin remodeler ALC1 bound to a poly-ADP-ribosylated nucleosome.
    1. Genetics and Genomics
    2. Neuroscience

    A zebrafish screen reveals Renin-angiotensin system inhibitors as neuroprotective via mitochondrial restoration in dopamine neurons

    Gha-Hyun J Kim et al.
    In vivo dopamine neuron imaging-based neuroprotective small molecule screen in larval zebrafish and mechanistic investigation using conditional CRISPR knockout and cell-type-specific RNA-seq analysis, coupled with cross-species analyses including human clinical data interrogation, uncover potential disease-modifying therapeutics for Parkinson's disease (PD).
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    A prion accelerates proliferation at the expense of lifespan

    David M Garcia et al.
    In its capacity to switch into a heritable, prionogenic form, a conserved RNA-modifying enzyme epigenetically alters fundamental growth, aging, and protein synthesis properties of eukaryotic cells.
    1. Chromosomes and Gene Expression

    SUV39 SET domains mediate crosstalk of heterochromatic histone marks

    Alessandro Stirpe et al.
    Clr4, a highly conserved SUV39 histone methyltransferase, requires its SET domain to sense histone H3K14 ubiquitination in order to maintain heterochromatin and H3K9 methylation.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    A precisely adjustable, variation-suppressed eukaryotic transcriptional controller to enable genetic discovery

    Asli Azizoglu et al.
    A new gene expression tool enables precise control of protein dosage over a large range and paves the way for new genetic discoveries.
    1. Chromosomes and Gene Expression

    Linker histone H1.8 inhibits chromatin binding of condensins and DNA topoisomerase II to tune chromosome length and individualization

    Pavan Choppakatla et al.
    Linker histone H1.8 shapes mitotic chromosomes by tuning the number and size of condensin-dependent DNA loops and suppressing condensin and DNA topoisomerase II-dependent individualization.
    1. Physics of Living Systems

    Hybrid protein assembly-histone modification mechanism for PRC2-based epigenetic switching and memory

    Cecilia Lövkvist et al.
    Extra protein memory storage elements with positive feedbacks, in addition to histone modifications, can explain epigenetic switching and memory at the PRC2 target gene FLOWERING LOCUS C (FLC).

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