938 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The cooperative binding of TDP-43 to GU-rich RNA repeats antagonizes TDP-43 aggregation

    Juan Carlos Rengifo-Gonzalez et al.
    The RNA-mediated higher order assembly of TDP-43, a protein associated with neurodegenerative diseases, preserves its solubility by reducing the risk of multivalent interactions between low complexity domains.
    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. Evolutionary Biology
    2. Genetics and Genomics

    Circular RNA repertoires are associated with evolutionarily young transposable elements

    Franziska Gruhl et al.
    Evolutionary analyses suggest that most mammalian circRNAs did not emerge from common ancestral circRNA precursors, arguing against widespread functional conservation.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    microRNA-mediated regulation of microRNA machinery controls cell fate decisions

    Qiuying Liu et al.
    Genetic and biochemical analyses reveal that two stem-cell-specific microRNAs control stem cell fate decisions between pluripotency and differentiation through repressing Ago2, a key component of the microRNA machinery.
    1. Evolutionary Biology
    2. Genetics and Genomics

    A modified fluctuation assay reveals a natural mutator phenotype that drives mutation spectrum variation within Saccharomyces cerevisiae

    Pengyao Jiang et al.
    Certain mutational signatures vary in their contribution to genetic variation across the yeast phylogeny due to genetically encoded natural mutator phenotypes whose activity can be directly measured in the lab.
    1. Microbiology and Infectious Disease
    2. Physics of Living Systems

    Inhibition of SARS-CoV-2 polymerase by nucleotide analogs from a single-molecule perspective

    Mona Seifert et al.
    High-throughput and ultra-stable magnetic tweezers reveal that Remdesivir induces a long-lived backtrack pause upon incorporation by the coronavirus polymerase, and SARS-CoV-2 is able to evade interferon-induced antiviral ddhCTP.
    1. Microbiology and Infectious Disease
    2. Structural Biology and Molecular Biophysics

    Structural characterization of NrnC identifies unifying features of dinucleotidases

    Justin D Lormand et al.
    Dinucleotidases, specialized enzymes that catalyze the final step in RNA degradation, have evolved independently and repeatedly to fulfill essential roles in cell growth.
    1. Developmental Biology

    Cell-to-cell heterogeneity in Sox2 and Bra expression guides progenitor motility and destiny

    Michèle Romanos et al.
    Spatial variations of transcription factor expression regulate the choice of progenitors to stay in their niche or to migrate into neural and mesodermal tissues.
    1. Cell Biology
    2. Plant Biology

    Members of the ELMOD protein family specify formation of distinct aperture domains on the Arabidopsis pollen surface

    Yuan Zhou et al.
    Pollen aperture patterning in Arabidopsis is controlled by members of the ELMOD protein family, whose expression levels in developing pollen lineage are tightly regulated.
    1. Neuroscience

    Profiling sensory neuron microenvironment after peripheral and central axon injury reveals key pathways for neural repair

    Oshri Avraham et al.
    The microenvironment surrounding sensory neurons in dorsal root ganglia responds differently to peripheral and central injuries, revealing that non-neuronal cells can be manipulated to promote axon regeneration after central injury.

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